Themed collection Recent Open Access Articles

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Open Access Perspective

Future perspectives in green hydrogen production by catalyzed sono-photolysis of water

Ultrasound-induced cavitation and dispersed photocatalysts synergistically decompose water into hydrogen, offering higher efficiency. Reasons and future research avenues are explored.

Graphical abstract: Future perspectives in green hydrogen production by catalyzed sono-photolysis of water
From the themed collection: Recent Open Access Articles
Open Access Perspective

To flow or not to flow. A perspective on large-scale stationary electrochemical energy storage

Schematic comparative diagram of the stages involved in moving from compact solid electrode materials to dilute nanofluids and RFB solutions.

Graphical abstract: To flow or not to flow. A perspective on large-scale stationary electrochemical energy storage
From the themed collection: Recent Open Access Articles
Open Access Perspective

Electrochemical CO2 conversion technologies: state-of-the-art and future perspectives

The current status and prospects of six routes to electrochemically convert CO2 into different products are investigated. The study includes for each of these routes an analysis of the costs and of the emissions related to electricity use.

Graphical abstract: Electrochemical CO2 conversion technologies: state-of-the-art and future perspectives
From the themed collection: Recent Open Access Articles
Open Access Perspective

Current state of biogas and biomethane production and its implications for Spain

In Spain, biomethane is emerging as one of the great keys, not only for the transformation of the energy mix in the short term, but also to advance towards the decarbonisation of the economy.

Graphical abstract: Current state of biogas and biomethane production and its implications for Spain
From the themed collection: Recent Open Access Articles
Open Access Perspective

What is necessary to fill the technological gap to design sustainable dye-sensitized solar cells?

Analysis of properties and data – both known and missing – related to materials selection, life cycle assessment, and end-of-life reuse and recycling options for device components to achieve a sustainable design of dye-sensitized solar cells.

Graphical abstract: What is necessary to fill the technological gap to design sustainable dye-sensitized solar cells?
From the themed collection: Recent Open Access Articles
Open Access Perspective

The role of selective contacts and built-in field for charge separation and transport in photoelectrochemical devices

The principal driving force for charge carrier separation in a PEC cell is given by the QFL gradients. Upon illumination the E-field is reduced by the amount of photovoltage delivered. Selective contacts are thus decisive for device performance.

Graphical abstract: The role of selective contacts and built-in field for charge separation and transport in photoelectrochemical devices
From the themed collection: Recent Open Access Articles
Open Access Perspective

On the climate impacts of blue hydrogen production

Natural gas based hydrogen production with carbon capture and storage is referred to as blue hydrogen.

Graphical abstract: On the climate impacts of blue hydrogen production
From the themed collection: Recent Open Access Articles
Open Access Perspective

Recycling bread waste into chemical building blocks using a circular biorefining approach

Food waste is a global problem, causing significant environmental harm and resulting in substantial economic losses globally.

Graphical abstract: Recycling bread waste into chemical building blocks using a circular biorefining approach
From the themed collection: Recent Open Access Articles
Open Access Perspective

Recent trends in graphene supercapacitors: from large area to microsupercapacitors

In this perspective, the recent trends in graphene supercapacitor research are shown, from the use of pseudocapacitor elements to enhance the performance of large-area electrodes, to its miniaturization driven by versatile fabrication techniques.

Graphical abstract: Recent trends in graphene supercapacitors: from large area to microsupercapacitors
From the themed collection: Recent Open Access Articles
Open Access Communication

Electrolyte tuning with low concentrations of additive for dendrite suppression in lithium metal anodes

Lithium metal is considered as an ideal anode for high-energy density storage systems with dendrites being a major issue for lifetime and safety. A gadolinium additive is found to be suppressing dendrite growth resulting higher performance retention.

Graphical abstract: Electrolyte tuning with low concentrations of additive for dendrite suppression in lithium metal anodes
From the themed collection: Recent Open Access Articles
Open Access Communication

Organic semiconductor nanoparticles for visible-light-driven CO2 conversion

We present an experimental proof-of-concept study of organic semiconductor nanoparticles (NPs) for visible-light-driven carbon dioxide (CO2) conversion.

Graphical abstract: Organic semiconductor nanoparticles for visible-light-driven CO2 conversion
From the themed collection: Recent Open Access Articles
Open Access Communication

Improved photocatalytic carbon dioxide reduction over Bi-doped CeO2 by strain engineering

By creating surface vacancy-dopant-mediated solid frustrated Lewis pairs, efficient photochemical conversion of CO2 to formic acid is achieved on Bi-doped CeO2 in the presence of strain, which is investigated by using density functional theory.

Graphical abstract: Improved photocatalytic carbon dioxide reduction over Bi-doped CeO2 by strain engineering
From the themed collection: Recent Open Access Articles
Open Access Communication

From brew to clean fuel: harnessing distillery wastewater for electrolysis H2 generation using nano scale nickle selenide water oxidation catalysts

This study unveils a promising and innovative strategy for electrochemical green H2 generation utilizing distillery industry wastewater. Investigating simultaneous electrochemical processes, it offers a sustainable solution for wastewater treatment and energy production.

Graphical abstract: From brew to clean fuel: harnessing distillery wastewater for electrolysis H2 generation using nano scale nickle selenide water oxidation catalysts
From the themed collection: Recent Open Access Articles
Open Access Communication

Methane synthesis from CO2 and H2O using electrochemical cells with polymer electrolyte membranes and Ru catalysts at around 120 °C: a comparative study to a phosphate-based electrolyte cell

A polymer-electrolyte electrochemical cell, equipped with a Ru/ZrO2 catalyst at 120 °C, converts CO2 and H2O into CH4 and O2 with a current efficiency of 85%.

Graphical abstract: Methane synthesis from CO2 and H2O using electrochemical cells with polymer electrolyte membranes and Ru catalysts at around 120 °C: a comparative study to a phosphate-based electrolyte cell
From the themed collection: Recent Open Access Articles
Open Access Communication

Core–shell Fe3O4@CoFe2O4 nanoparticles as high-performance anode catalysts for enhanced oxygen evolution reaction

Core–shell transition metal oxide nanoparticles as efficent material for water electrolysis.

Graphical abstract: Core–shell Fe3O4@CoFe2O4 nanoparticles as high-performance anode catalysts for enhanced oxygen evolution reaction
From the themed collection: Recent Open Access Articles
Open Access Communication

The role of A-site composition in the photostability of tin–lead perovskite solar cells

The content of methylammonium dominates the photostability of tin–lead perovskite solar cells.

Graphical abstract: The role of A-site composition in the photostability of tin–lead perovskite solar cells
From the themed collection: Recent Open Access Articles
Open Access Communication

Simultaneous non-invasive gas analysis in artificial photosynthesis reactions using rotational Raman spectroscopy

A new instrument for gas analysis in artificial photosynthesis reactions is presented. The device uses rotational Raman spectroscopy to analyse multiple gases (H2, O2, N2, CO, CO2) simultaneously, non-invasively and with short analysis times (15 s).

Graphical abstract: Simultaneous non-invasive gas analysis in artificial photosynthesis reactions using rotational Raman spectroscopy
From the themed collection: Recent Open Access Articles
Open Access Communication

Mediator-free NADH photochemical regeneration with the aid of the amino acid L-cysteine

An aged Ru complex has been successfully employed for the photochemical monoreduction of NAD+ achieving mediator-free NADH formation with the only aid of L-cysteine and visible light.

Graphical abstract: Mediator-free NADH photochemical regeneration with the aid of the amino acid l-cysteine
From the themed collection: Recent Open Access Articles
Open Access Communication

The many greenhouse gas footprints of green hydrogen

This communication shows how green hydrogen's climate footprint and performance against alternatives depends on electricity source and accounting choices.

Graphical abstract: The many greenhouse gas footprints of green hydrogen
From the themed collection: Recent Open Access Articles
Open Access Communication

Operando isotope selective ammonia quantification in nitrogen reduction studies via gas chromatography-mass spectrometry

Direct, fast and sensitive isotopic ammonia detection is key to accessing reliable NRR experiments and accelerate catalyst screening. We develop a GC-MS method to detect NH3 down to 1 ppm in the gas phase, in real-time and without external manipulation.

Graphical abstract: Operando isotope selective ammonia quantification in nitrogen reduction studies via gas chromatography-mass spectrometry
From the themed collection: Recent Open Access Articles
Open Access Communication

In situ formation of a molecular cobalt(III)/AgCl photocatalyst for visible-light water oxidation

A unique photocatalyst that consists of a molecular Co(III) species and wide-bandgap AgCl is presented. Even without a physical connection between the two components, the Co(III)/AgCl photocatalyst showed water oxidation activity under visible light.

Graphical abstract: In situ formation of a molecular cobalt(iii)/AgCl photocatalyst for visible-light water oxidation
From the themed collection: Recent Open Access Articles
Open Access Communication

Separating bulk and surface processes in NiOx electrocatalysts for water oxidation

Nickel oxyhydroxide electrocatalysts are highly active for water oxidation and swell when electrochemically activated. In this thickness dependence study, we find only the upper surface (<5 nm) is active during water oxidation catalysis.

Graphical abstract: Separating bulk and surface processes in NiOx electrocatalysts for water oxidation
From the themed collection: Recent Open Access Articles
Open Access Communication

Parameter optimisation for electrochemically activated MoTe2

Revealing the optimal parameters responsible for a dramatic in operando reduction of the overpotential in a 2D metal chalcogenide electrocatalyst for the hydrogen evolution reaction.

Graphical abstract: Parameter optimisation for electrochemically activated MoTe2
From the themed collection: Recent Open Access Articles
Open Access Communication

Increased hydrogen partial pressure suppresses and reverses hydrogen evolution during Pd catalysed electrolysis of CO2

Control over selectivity towards HCOO rather than H2 is acquired by using elevated pressure of hydrogen during CO2 electrolysis.

Graphical abstract: Increased hydrogen partial pressure suppresses and reverses hydrogen evolution during Pd catalysed electrolysis of CO2
From the themed collection: Recent Open Access Articles
Open Access Communication

Polymer reinforced carbon fiber interfaces for high energy density structural lithium-ion batteries

Interface engineering enables a practical multifunctional advantage in a structural battery.

Graphical abstract: Polymer reinforced carbon fiber interfaces for high energy density structural lithium-ion batteries
From the themed collection: Recent Open Access Articles
Open Access Communication

Hidden figures of photo-charging: a thermo-electrochemical approach for a solar-rechargeable redox flow cell system

Achieving high current densities without thermal performance degradation at high temperatures is one of the main challenges for enhancing the competitiveness of photo-electrochemical energy storage systems.

Graphical abstract: Hidden figures of photo-charging: a thermo-electrochemical approach for a solar-rechargeable redox flow cell system
From the themed collection: Recent Open Access Articles
Open Access Paper

Fuel-range liquid hydrocarbon products from catalytic deoxygenation of mixtures of fatty acids obtained from the hydrolysis of rapeseed oil

The combined hydrolysis–deoxygenation method reported here demonstrates the efficiency of hydrogen-free catalytic conversion of lipid-derived multi-fatty acids into renewable drop-in hydrocarbon biofuels.

Graphical abstract: Fuel-range liquid hydrocarbon products from catalytic deoxygenation of mixtures of fatty acids obtained from the hydrolysis of rapeseed oil
From the themed collection: Recent Open Access Articles
Open Access Paper

Selective optimisation of catalytic activity by tuning the structural composition in nanoparticulate CuFe2O4

CuFe2O4 nanocrystals, specifically targeting different cation ratios and structural compositions, were prepared for multiple electrochemical reactions, including HER, OER, ORR and CO2RR.

Graphical abstract: Selective optimisation of catalytic activity by tuning the structural composition in nanoparticulate CuFe2O4
From the themed collection: Recent Open Access Articles
Open Access Paper

Migration-mitigated crossover of organic redox anions across a proton-exchange membrane

We introduce a membrane electrolyzer for the generation of hydrogen peroxide via oxygen reduction and catalyst-free oxidation of quinones. The study reports the effect of the applied coulombic forces on ions, which is the origin of crossover.

Graphical abstract: Migration-mitigated crossover of organic redox anions across a proton-exchange membrane
From the themed collection: Recent Open Access Articles
Open Access Paper

Near-zero environmental impact aircraft

The fundamental challenge facing the aviation industry is to achieve near-zero environmental impacts while sustaining growth. We propose a near-zero impact aircraft, taking a lifecycle perspective across fuels, aircraft design, and operation.

Graphical abstract: Near-zero environmental impact aircraft
From the themed collection: Recent Open Access Articles
Open Access Paper

Techno-economic and environmental impacts assessments of sustainable aviation fuel production from forest residues

Sustainable aviation fuel (SAF) from forest residues is a promising pathway to reduce aviation's carbon footprint. This study assesses the techno-economic and environmental impacts of producing SAF via Fischer–Tropsch synthesis, with soil carbon benefits and greenhouse gas reductions.

Graphical abstract: Techno-economic and environmental impacts assessments of sustainable aviation fuel production from forest residues
From the themed collection: Recent Open Access Articles
Open Access Paper

Adsorptive denitrogenation of model fuel with silica gel

The results establish the adsorption capacity, kinetics, interaction strength of pyridine/indole with sorbents and regeneration, highlighting silica gel's potential as an efficient and cost-effective adsorbent for biofuel nitrogen compounds removal.

Graphical abstract: Adsorptive denitrogenation of model fuel with silica gel
From the themed collection: Recent Open Access Articles
Open Access Paper

Thermal-integration in photoelectrochemistry for fuel and heat co-generation

Numerous photoelectrochemical systems designs are compared on an energy and exergy basis for their capacity to produce hydrogen and heat. Systems include both liquid and vapor-phase reactants, solar concentration, and spectrum splitting optics.

Graphical abstract: Thermal-integration in photoelectrochemistry for fuel and heat co-generation
From the themed collection: Recent Open Access Articles
Open Access Paper

Tribo-piezoelectric nanogenerators for energy harvesting: a first-principles study

Two-dimensional transition metal dichalcogenides (TMDs) are highly promising candidates for various applications due to their unique electrical, optical, mechanical, and chemical properties.

Graphical abstract: Tribo-piezoelectric nanogenerators for energy harvesting: a first-principles study
From the themed collection: Recent Open Access Articles
Open Access Paper

Synthesis of jet fuel range paraffins from cellulose

Jet fuel range C16 and C11 paraffins were synthesized by the hydroxyalkylation/alkylation of cellulose derivated 5-methylfurfural and its decarbonylation product 2-methylfuran, followed by hydrodeoxygenation (HDO).

Graphical abstract: Synthesis of jet fuel range paraffins from cellulose
From the themed collection: Recent Open Access Articles
Open Access Paper

The influence of Michael acceptors on the structural reactivity of renewable fuels

Decarbonising heavy-duty transport relies on understanding how chemical structures present in biomass may improve the combustion of otherwise overlooked biofuels.

Graphical abstract: The influence of Michael acceptors on the structural reactivity of renewable fuels
From the themed collection: Recent Open Access Articles
Open Access Paper

Techno-economic analysis of a solar-driven biomass pyrolysis plant for bio-oil and biochar production

Transforming conventional biomass pyrolysis through solar-driven pyrolysis with a falling particle receiver and intermediate hybrid solution reduces costs by 21% and 32% and emissions by 27.5 and 22.3 kgCO2 GJoil−1, respectively.

Graphical abstract: Techno-economic analysis of a solar-driven biomass pyrolysis plant for bio-oil and biochar production
From the themed collection: Recent Open Access Articles
Open Access Paper

Dopant-free fluorene based dimers linked with thiophene units as prospective hole transport materials for Sb2S3 solar cells

Novel dopant-free dimers comprising methoxydiphenylamine substituted fluorene derivatives as hole transport materials (HTMs) in Sb2S3 absorber solar cells.

Graphical abstract: Dopant-free fluorene based dimers linked with thiophene units as prospective hole transport materials for Sb2S3 solar cells
From the themed collection: Recent Open Access Articles
Open Access Paper

Selective lithium extraction from brine via chemical reduction of iron phosphate with aqueous iron compounds

Lithium production has increased with surges in demand. Iron based redox mediators were developed to extract Li+ from brine, showing promise using brines with low amounts of lithium and high concentrations of competing ions.

Graphical abstract: Selective lithium extraction from brine via chemical reduction of iron phosphate with aqueous iron compounds
From the themed collection: Recent Open Access Articles
Open Access Paper

Effects of solar thermal energy on district heating systems: the case of parabolic trough collectors in a high-latitude region

System perspective of solar themal: effects of solar water heating plants depend on configurations of district heating systems and uses of saved biomass.

Graphical abstract: Effects of solar thermal energy on district heating systems: the case of parabolic trough collectors in a high-latitude region
From the themed collection: Recent Open Access Articles
Open Access Paper

Activating cobalt inverse spinel oxides via Fe substitution for enhanced water splitting reaction

Owing to their expeditious kinetics and remarkable catalytic prowess, spinel oxides have attracted significant attention as promising non-precious metal electrocatalysts for oxygen evolution reaction.

Graphical abstract: Activating cobalt inverse spinel oxides via Fe substitution for enhanced water splitting reaction
From the themed collection: Recent Open Access Articles
Open Access Paper

Thermally integrated photoelectrochemical devices with perovskite/silicon tandem solar cells: a modular approach for scalable direct water splitting

Thermally integrated photoelectrochemical cells made of perovskite/silicon tandem solar cells and PEM electrolysers were scaled in modules up to 342 cm2. Direct hydrogen production was demonstrated outdoors with a STH efficiency of 6.3%.

Graphical abstract: Thermally integrated photoelectrochemical devices with perovskite/silicon tandem solar cells: a modular approach for scalable direct water splitting
From the themed collection: Recent Open Access Articles
Open Access Paper

Precise control of TiO2 overlayer on hematite nanorod arrays by ALD for the photoelectrochemical water splitting

The short lifetime of electron–hole pairs and high electron–hole recombination rate at surface states significantly limit the practical applications of hematite (α-Fe2O3) photoanodes in photoelectrochemical (PEC) water splitting.

Graphical abstract: Precise control of TiO2 overlayer on hematite nanorod arrays by ALD for the photoelectrochemical water splitting
From the themed collection: Recent Open Access Articles
Open Access Paper

Sustainable syngas generation from methane: enhanced catalysis with metal-promoted nickel on silica–alumina composites

To combat climate change and its association with emissions from fossil fuels, scientists are investigating sustainable substitutes.

Graphical abstract: Sustainable syngas generation from methane: enhanced catalysis with metal-promoted nickel on silica–alumina composites
From the themed collection: Recent Open Access Articles
Open Access Paper

High-throughput parallel testing of ten photoelectrochemical cells for water splitting: case study on the effects of temperature in hematite photoanodes

A setup that simultaneously tests ten photoelectrochemical cells whilst controlling temperature was developed. Applied to Sn:α-Fe2O3 photoanodes, increasing temperature penalized energy conversion efficiency due to increased surface recombination.

Graphical abstract: High-throughput parallel testing of ten photoelectrochemical cells for water splitting: case study on the effects of temperature in hematite photoanodes
From the themed collection: Recent Open Access Articles
Open Access Paper

Tuning 2D perovskite–graphene layered composite for photocatalysis

This study demonstrates the photocatalytic performance of perovskite nanosheets on reduced graphene oxide depends critically on A-site lanthanide cations, which gives structural tuning of this nanocomposite for H2 generation.

Graphical abstract: Tuning 2D perovskite–graphene layered composite for photocatalysis
From the themed collection: Recent Open Access Articles
Open Access Paper

Catalytic hydrodeoxygenation of benzoic acid as a bio-oil model compound: reaction and kinetics using nickel-supported catalysts

The development of technologies for the bio-oil upgrading process is a crucial step towards achieving sustainable energy production.

Graphical abstract: Catalytic hydrodeoxygenation of benzoic acid as a bio-oil model compound: reaction and kinetics using nickel-supported catalysts
From the themed collection: Recent Open Access Articles
Open Access Paper

Thermo-oxidative aging of linear and branched alcohols as stability criterion for their use as e-fuels

This paper contributes to the solution of the energy crisis by investigating the stability of alcohols as e-fuels. The focus is on the investigation of the aging mechanism of 1-hexanol and 1-octanol compared to the 2-hexanol.

Graphical abstract: Thermo-oxidative aging of linear and branched alcohols as stability criterion for their use as e-fuels
From the themed collection: Recent Open Access Articles
Open Access Paper

Solvent processing for improved separation of hydrothermal liquefaction products

Solvent extraction and separation of HTL products using naphtha range hydrocarbons was studied with the aim of decreasing operational hazards while improving scalability, reliability, and yields.

Graphical abstract: Solvent processing for improved separation of hydrothermal liquefaction products
From the themed collection: Recent Open Access Articles
Open Access Paper

A zero-gap silicon membrane with defined pore size and porosity for alkaline electrolysis

Stable porous silicon based separators for alkaline water electrolysis with micron-sized cylindrical pores and low area resistance.

Graphical abstract: A zero-gap silicon membrane with defined pore size and porosity for alkaline electrolysis
From the themed collection: Recent Open Access Articles
Open Access Paper

Carbon corrosion in low-temperature CO2 electrolysis systems

Mitigation of carbon corrosion, or the use of non-carbon based anodes, is required to achieve the necessary durability for industrial CO2 electrolysis.

Graphical abstract: Carbon corrosion in low-temperature CO2 electrolysis systems
From the themed collection: Recent Open Access Articles
Open Access Paper

Hydrothermal liquefaction integrated with wastewater treatment plants – life cycle assessment and technoeconomic analysis of process system options

GHG emission savings and production costs of biofuels via Hydrothermal Liquefaction (HTL) of sewage sludge present a potential degree of competitiveness.

Graphical abstract: Hydrothermal liquefaction integrated with wastewater treatment plants – life cycle assessment and technoeconomic analysis of process system options
From the themed collection: Recent Open Access Articles
Open Access Paper

Improving the photoelectrocatalytic efficiency of CuWO4 through molybdenum for tungsten substitution and coupling with BiVO4

IMPS analysis demonstrates the improved charge separation in CuW0.5Mo0.5O4 compared to CuWO4, which is further enhanced upon coupling with BiVO4.

Graphical abstract: Improving the photoelectrocatalytic efficiency of CuWO4 through molybdenum for tungsten substitution and coupling with BiVO4
From the themed collection: Recent Open Access Articles
Open Access Paper

Mg-modified graphitic carbon nitride/converter slag composites as an efficient photocatalyst for sugar conversion

The Mg–CN/CS heterostructure photocatalyst exhibits high photocatalytic production of lactic acid from biomass-derived saccharides under visible-light irradiation due to the efficient separation of photogenerated charge carriers.

Graphical abstract: Mg-modified graphitic carbon nitride/converter slag composites as an efficient photocatalyst for sugar conversion
From the themed collection: Recent Open Access Articles
Open Access Paper

The value of ammonia towards integrated power and heat system decarbonisation

Accomplishing Net Zero by 2050 warrants deep decarbonisation pathways that incorporate dense energy carriers, like hydrogen or ammonia, which enable inter-seasonal energy storage and can lead to cost-effective CO2 abatement in heat & power sectors.

Graphical abstract: The value of ammonia towards integrated power and heat system decarbonisation
From the themed collection: Recent Open Access Articles
Open Access Paper

Surface modification of mesostructured cellular foam to enhance hydrogen storage in binary THF/H2 clathrate hydrate

Solid-state tuning of a mesostructured cellular foam (MCF) enhances hydrogen storage in clathrate hydrates. Grafting of promoter-like molecules (e.g., tetrahydrofuran) at the internal surface of the MCF improved the kinetics of formation of binary H2-THF clathrate hydrate.

Graphical abstract: Surface modification of mesostructured cellular foam to enhance hydrogen storage in binary THF/H2 clathrate hydrate
From the themed collection: Recent Open Access Articles
Open Access Paper

Enhanced electrochemical discharge of Li-ion batteries for safe recycling

The safe recycling of spent LIBs is challenging, as they often contain residual energy. Left untreated, this can trigger a thermal runaway and result in disaster during the recycling process. Electrochemical discharge method is an easy and inexpensive method to eliminate this hazard.

Graphical abstract: Enhanced electrochemical discharge of Li-ion batteries for safe recycling
From the themed collection: Recent Open Access Articles
Open Access Paper

Sheet-like ZnCo2O4 microspheres and pomelo peel waste-derived activated carbon for high performance solid state asymmetric supercapacitors

This study reports a novel asymmetric supercapacitor based on zinc cobalt oxide (ZnCo2O4) as positive electrode and pomelo peel-based activated carbon (PPAC-4) as negative electrode with hydroxyethyl cellulose/potassium hydroxide gel electrolyte.

Graphical abstract: Sheet-like ZnCo2O4 microspheres and pomelo peel waste-derived activated carbon for high performance solid state asymmetric supercapacitors
From the themed collection: Recent Open Access Articles
Open Access Paper

First-principles evaluation of MnO2 polymorphs as cathode material in lithium-ion batteries

MnO2 polymorphs show distinct advantages and disadvantages when used as cathode material for Li-ion batteries (LIBs).

Graphical abstract: First-principles evaluation of MnO2 polymorphs as cathode material in lithium-ion batteries
From the themed collection: Recent Open Access Articles
Open Access Paper

Equivalent circuit models for predicting electrical and gas output characteristics of CO2 electrolysis cells

An equivalent circuit model for a CO2 electrolysis cell producing CO and H2 is proposed, taking into account that the CO2 input and the transfer of both carbonate and hydrogen carbonate ions limit the CO partial current density.

Graphical abstract: Equivalent circuit models for predicting electrical and gas output characteristics of CO2 electrolysis cells
From the themed collection: Recent Open Access Articles
Open Access Paper

Heterogeneous preferences for living in a hydrogen home: an advanced multigroup analysis

Safety, technological, economic, and environmental perspectives will shape the social acceptability of deploying hydrogen heating and cooking appliances for the residential sector.

Graphical abstract: Heterogeneous preferences for living in a hydrogen home: an advanced multigroup analysis
From the themed collection: Recent Open Access Articles
Open Access Paper

One-pot reductive liquefaction of sawdust to renewables over MoOx–Al2O3 variants: insight into structure–activity relationships

Mo-species (Mo+5) formed over alumina surface promotes depolymerization and hydrodeoxygenation simultaneously in one-pot reductive liquefaction of sawdust.

Graphical abstract: One-pot reductive liquefaction of sawdust to renewables over MoOx–Al2O3 variants: insight into structure–activity relationships
From the themed collection: Recent Open Access Articles
Open Access Paper

2-Methylfuran from pinewood by molten-salt hydropyrolysis and catalytic hydrogenation of the furfural intermediate

Sustainable additive fuel production (2-methylfuran) from biomass hydropyrolysis in molten salts and catalytic upgrading from a fresh integrated perspective.

Graphical abstract: 2-Methylfuran from pinewood by molten-salt hydropyrolysis and catalytic hydrogenation of the furfural intermediate
From the themed collection: Recent Open Access Articles
Open Access Paper

Barium-doped iron nanoparticles supported on MgO as an efficient catalyst for ammonia synthesis under mild reaction conditions

A Ba-doped Fe/MgO catalyst pre-reduced at 700 °C, much higher than that of conventional Fe catalysts, forms an Fe0-core and BaO-shell structure. This enhances ammonia synthesis activity due to electron donation from BaO to N2via Fe0.

Graphical abstract: Barium-doped iron nanoparticles supported on MgO as an efficient catalyst for ammonia synthesis under mild reaction conditions
From the themed collection: Recent Open Access Articles
Open Access Paper

A light-driven photosynthetic microbial fuel cell for carbon-negative bioelectricity production

A photosynthetic microbial fuel cell produces higher power density and simultaneously reuptakes CO2 produced from organic decomposition.

Graphical abstract: A light-driven photosynthetic microbial fuel cell for carbon-negative bioelectricity production
From the themed collection: Recent Open Access Articles
Open Access Paper

Operando X-ray absorption spectroscopy of Fe–N–C catalysts based on carbon black and biomass-derived support materials for the ORR

Novel biomass based Fe–N–C catalysts exhibit a higher density of FeNx type sites with different redox characteristics compared to carbon black based Fe–N–Cs. These different characteristics are influenced by heteroatom doping and undercoordination.

Graphical abstract: Operando X-ray absorption spectroscopy of Fe–N–C catalysts based on carbon black and biomass-derived support materials for the ORR
From the themed collection: Recent Open Access Articles
Open Access Paper

Investigation on the coordination between methylpyridine additives and the [Cu(dmp)2]2+/+ redox couple and its improvement towards the stability of the dye-sensitized solar cells

The position of the methyl group in methylpyridine derivatives plays an important role in the copper(II) coordination mechanism and their electrochemical properties relate to the regeneration process of [Cu(dmp)2]2+ at the counter electrode/electrolyte interfaces.

Graphical abstract: Investigation on the coordination between methylpyridine additives and the [Cu(dmp)2]2+/+ redox couple and its improvement towards the stability of the dye-sensitized solar cells
From the themed collection: Recent Open Access Articles
Open Access Paper

Engineering 2D nickel boride/borate amorphous/amorphous heterostructures for electrocatalytic water splitting and magnetism

Engineering nickel boride/borate amorphous/amorphous heterostructures using a simple one-pot chemical reduction method.

Graphical abstract: Engineering 2D nickel boride/borate amorphous/amorphous heterostructures for electrocatalytic water splitting and magnetism
From the themed collection: Recent Open Access Articles
Open Access Paper

Comparing a covalently linked BODIPY–pyrene system versus the corresponding physical mixture as chromophores in luminescent solar concentrators

Using antenna systems displaying energy transfer processes can be a valuable option to boost the performances of the luminescent solar concentrators. In this context, the selection of the appropriate energy donor plays a crucial role.

Graphical abstract: Comparing a covalently linked BODIPY–pyrene system versus the corresponding physical mixture as chromophores in luminescent solar concentrators
From the themed collection: Recent Open Access Articles
Open Access Paper

Efficient hydrogen evolution from water over a thin film photocathode composed of solid solutions with a composition gradient of ZnTe and CdTe

Photocathode composed of solid solutions with a composition gradient of ZnTe and CdTe shows significantly enhanced solar hydrogen evolution from water over bilayer and/or monolayer photocathodes.

Graphical abstract: Efficient hydrogen evolution from water over a thin film photocathode composed of solid solutions with a composition gradient of ZnTe and CdTe
From the themed collection: Recent Open Access Articles
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