Themed collection Journal of Materials Chemistry A Emerging Investigators
Journal of Materials Chemistry A profiles: Contributors to the Emerging Investigators 2018 issue
Journal of Materials Chemistry A profiles contributors to the Emerging Investigators issue.
Initiation and future prospects of colloidal metal halide double-perovskite nanocrystals: Cs2AgBiX6 (X = Cl, Br, I)
Reviewing the present and future of “Green” metal halide double perovskite nanocrystals as potential optoelectronic materials.
Polymeric coatings for applications in electrocatalytic and photoelectrosynthetic fuel production
Polymeric coatings provide opportunities to control matter and energy in complex environments, including applications in artificial photosynthesis and solar fuels.
Chemomechanical behaviors of layered cathode materials in alkali metal ion batteries
This review summarizes the recent progress in characterizing, understanding, and modifying the chemomechanical properties of layered oxide cathode materials.
A bright outlook on organic photoelectrochemical cells for water splitting
A review on organic photoelectrochemical water splitting cells giving perspective on promising device architectures and materials.
Polydopamine-inspired nanomaterials for energy conversion and storage
This review highlights the intriguing physicochemical and structural versatility of PDA-based nanomaterials and their energy conversion and storage applications.
Synergistic modulation in MX2 (where M = Mo or W or V, and X = S or Se) for an enhanced hydrogen evolution reaction
In order to solve the energy crisis and reduce the environmental impact of the combustion of fossil fuels, the strategy of obtaining hydrogen using the hydrogen evolution reaction (HER) has great potential.
A full overview of international standards assessing the long-term stability of perovskite solar cells
Perovskite solar cells have emerged as promising candidates for photovoltaics. Passing existing standards is a necessary minimum requirement for a possible commercialisation. Here, we analyse the most current international stability standards and to which degree perovskites have passed them. We then elaborate on the most pertinent challenges for the long-term stability of perovskites in the coming years.
Tolerance factors of hybrid organic–inorganic perovskites: recent improvements and current state of research
We provide an update on the current state of the tolerance factor concept for hybrid organic–inorganic perovskites, reviewing the different improvements that have been made over the past few years.
Recent advances in the preparation, characterization, and applications of two-dimensional heterostructures for energy storage and conversion
This review summarizes recent advances in the preparation and characterization of 2D heterostructures for energy storage and conversion.
Emergence of s-heptazines: from trichloro-s-heptazine building blocks to functional materials
The article briefly summarizes the development of material designs including molecular and polymeric frameworks from trichloro-s-heptazine.
Recent advances toward practical use of halide perovskite nanocrystals
Halide perovskite nanocrystals (NCs) and quantum dots (QDs) have received considerable attention, due to their superior photoluminescence quantum yields close to unity, variable morphologies, and tunable optical bandgaps achieved by modifying their composition, size and dimensionality.
A heterojunction strategy to improve the visible light sensitive water splitting performance of photocatalytic materials
This article summarizes the photocatalytic water splitting performance improvement with a heterojunction system.
Recent progress in two-dimensional polymers for energy storage and conversion: design, synthesis, and applications
The synthetic methods of two-dimensional polymers and their applications in energy storage and conversion are reviewed with an emphasis on the underlying method–structure–property relationships.
Porous purple glass – a cobalt imidazolate glass with accessible porosity from a meltable cobalt imidazolate framework
We report the first microporous cobalt imidazolate glass obtained from a meltable cobalt-based zeolitic imidazolate framework, ZIF-62(Co).
A deeply rechargeable zinc anode with pomegranate-inspired nanostructure for high-energy aqueous batteries
A deeply rechargeable zinc anode material with nanoscale pomegranate-structured was designed and synthesized for the high energy aqueous batteries.
A cobalt sulfide cluster-based catholyte for aqueous flow battery applications
A water-soluble Co6S8 molecular cluster was prepared and electrochemically analyzed as a potential active material for redox flow battery applications.
Tunable nano-interfaces between MnOx and layered double hydroxides boost oxygen evolving electrocatalysis
Nano-interfaces between MnOx islands and NiFe layered double hydroxide (LDH) nanosheets were tuned using atomic layer deposition thereby enhancing oxygen evolution activity.
Establishing new scaling relations on two-dimensional MXenes for CO2 electroreduction
With alternating binding of reaction intermediates, O-terminated MXenes display low theoretical overpotential for CO2 reduction reaction.
Cs0.15FA0.85PbI3 perovskite solar cells for concentrator photovoltaic applications
Recently developed, highly stable perovskite materials show promise for use in concentrator photovoltaics where the illumination intensity far exceeds standard test conditions.
Designing effective Si/Ag interface via controlled chemical etching for photoelectrochemical CO2 reduction
Controlled chemical etching of Si wafer by Ag+ ions results in the effective Si/Ag interface for photoelectrochemical CO2 reduction to CO.
Solvent-free synthesis of a porous thiophene polymer by mechanochemical oxidative polymerization
An oxidative polymerization reaction was brought into the solvent-free environment of a ball mill, yielding a porous polymer with a defined structure and high surface area.
Electrochemical n-type doping of carbon nanotube films by using supramolecular electrolytes
This paper describes a rational electrochemical method for selecting appropriate supramolecular dopants that convert p-type SWNTs to their n-type forms.
Formation of Ti–Fe mixed sulfide nanoboxes for enhanced electrocatalytic oxygen evolution
Crystalline Ti–Fe mixed sulfide nanoboxes are fabricated and demonstrate enhanced electrocatalytic activity and excellent stability for the oxygen evolution reaction.
Pore structure and electrochemical properties of CNT-based electrodes studied by in situ small/wide angle X-ray scattering
The pore structure and surface area of CNT-based electrodes is analysed by SAXS/WAXS, including under eletrochemical measurements.
On the role of hydroxide species in sulphur- and nitrogen-doped cobalt-based carbon catalysts for the oxygen evolution reaction
Cobalt hydroxide species are at the origin of OER activity of multiheteroatom doped carbon catalysts.
Structure–property relationships describing the buried interface between silicon oxide overlayers and electrocatalytic platinum thin films
This article identifies Pt-oxide interlayers at the buried interface of Si-oxide/Pt thin films and explores their implications for electrocatalysis.
Charge storage mechanism and degradation of P2-type sodium transition metal oxides in aqueous electrolytes
P2-type sodium transition metal oxides undergo water-driven structural changes that strongly affect electrochemical charge storage in aqueous electrolytes.
Terahertz short-range mobilities in neat and intermixed regions of polymer:fullerene blends with controlled phase morphology
Terahertz spectroscopy unravels the inner working principles of polymer:fullerene blend organic semiconductors with regard to their solar cell performance.
Multiple heteroatom-doped few-layer carbons for the electrochemical oxygen reduction reaction
We demonstrate a template-free and scalable approach towards synthesis of a new family of multiple heteroatom-doped (N/O, N/S/O, N/P/O, and N/S/P/O) few-layer carbons as metal-free catalysts for the high performance oxygen reduction reaction under pH-universal conditions.
Electrostatically regulated photoinduced electron transfer in “cationic” eco-friendly CuInS2/ZnS quantum dots in water
An artificial light harvesting system based on cationic eco-friendly CuInS2 QDs as efficient electron donors, in water, is presented.
Directional freeze-cast hybrid-backbone meso-macroporous bodies as micromonolith catalysts for gas-to-liquid processes
Directional freeze casting enables the assembly of bimodally porous micronomolith Fischer–Tropsch catalyst bodies with enhanced effective thermal conductivity and pore molecular transport rates, leading to a high selectivity to liquid olefin products.
Significantly improved performance of dye-sensitized solar cells by optimizing organic dyes with pyrrole as the isolation spacer and utilizing alkyl chain engineering
The conversion efficiencies of dye sensitized solar cells were largely enhanced by the optimization of intramolecular and interfacial charge transfer.
Chemical stability of poly(phenylene oxide)-based ionomers in an anion exchange-membrane fuel cell environment
The chemical stability of polyphenylene oxide grafted with quaternary ammonium salts, ionomers relevant for the development of practical alkaline fuel cells, is studied using hydroxide at different water microsolvation levels.
In situ synthesis and in operando NMR studies of a high-performance Ni5P4-nanosheet anode
Nickel phosphide (Ni5P4) nanosheets are synthesized using in situ chemical vapor deposition of P on Ni foam, which demonstrate good electrochemical performance including high rate capability. The lithiation mechanism is studied with operando NMR.
Nanocatalysts for hydrogen production from borohydride hydrolysis: graphene-derived thin films with Ag- and Ni-based nanoparticles
High values of maximum rates of hydrogen production are obtained using four thin film nanocomposites that showed recycling features.
Identifying and controlling phase purity in 2D hybrid perovskite thin films
Improved phase purity in 2D hybrid perovskite thin films with horizontal crystal orientation was achieved through slow crystallization employing lead-complexing solvent additives.
Iodide-induced differential control of metal ion reduction rates: synthesis of terraced palladium–copper nanoparticles with dilute bimetallic surfaces
Iodide-induced kinetic control enables selective surface passivation of palladium through underpotential deposition of copper to generate terraced palladium–copper particles.
Insights into CO2 adsorption and chemical fixation properties of VPI-100 metal–organic frameworks
The mechanism of CO2 utilization by a metallocyclam-based metal–organic framework catalyst, termed VPI-100, is studied.
Resurgence of DSCs with copper electrolyte: a detailed investigation of interfacial charge dynamics with cobalt and iodine based electrolytes
Deploying earth abundant copper as a redox mediator in dye-sensitized solar cells (DSCs) has been found to be a very promising strategy to achieve higher photovoltage and power conversion efficiencies in full sun (100 mW cm−2) and in low/diffuse light conditions.
A pyrazine-incorporated graphdiyne nanofilm as a metal-free electrocatalyst for the hydrogen evolution reaction
A graphdiyne analogue featuring pyrazine as the aromatic center was synthesized under air using a liquid/liquid interfacial synthesis. It served as a metal-free electrocatalyst for the hydrogen evolution reaction (HER) from water.
Thiol–ene photopolymerization of vinyl-functionalized metal–organic frameworks towards mixed-matrix membranes
A thiol–ene ‘click’ photopolymerization methodology for the covalent connection between vinyl-functionalized metal–organic frameworks (MOFs) and the polymer matrix.
Unravelling the electrochemical mechanisms for nitrogen fixation on single transition metal atoms embedded in defective graphitic carbon nitride
Single transition metal atoms supported by defective g-C3N4 are examined by DFT for electrochemical N2 fixation. The single Ti atom is the most promising candidate for its high activity and stability owing to the coordination number of the active center.
Robust synthesis of ultrathin Au–Ag nanowires as a high-surface-area, synergistic substrate for constructing efficient Pt-based catalysts
Ultrathin Au–Ag alloy nanowires were synthesized using a novel Ag-halide capping effect for atomic deposition of Pt for catalytic applications.
Linking surface chemistry to photovoltage in Sr-substituted LaFeO3 for water oxidation
Perovskite oxides are promising materials for photoabsorbers and electrocatalysts for solar-driven water oxidation.
Designing conjugated microporous polymers for visible light-promoted photocatalytic carbon–carbon double bond cleavage in aqueous medium
A structural design of conjugated microporous polymers for the photocatalytic carbon–carbon double bond cleavage is presented.
Insight into lithium-ion mobility in Li2La(TaTi)O7
Using experimental and computational methods, lithium ion mobility and the pathways for lithium conduction in Li2La(TaTi)O7 have been studied.
Effect of halide ratio and Cs+ addition on the photochemical stability of lead halide perovskites
Visible light-induced changes in mixed-ion perovskites with different compositions are investigated using photoelectron spectroscopy.
Vertically oriented TiS2−x nanobelt arrays as binder- and carbon-free intercalation electrodes for Li- and Na-based energy storage devices
Vertically-oriented TiS2 nanobelt arrays allow for the fabrication of carbon- and binder- free electrodes with high ion diffusion lengths.
Thick and freestanding MXene/PANI pseudocapacitive electrodes with ultrahigh specific capacitance
In situ deposition of PANI on the surface of MXenes leads to the fabrication of high performance supercapacitor electrodes.
One-pot synthesis of self-supported hierarchical urchin-like Ni3S2 with ultrahigh areal pseudocapacitance
Self-supported Ni3S2 with hierarchical urchin-like subunits was hydrothermally synthesized with superior areal pseudocapacitance and powered 8 red LEDs.
Stabilizing NiCo2O4 hybrid architectures by reduced graphene oxide interlayers for improved cycling stability of hybrid supercapacitors
Nickel cobaltite@reduced graphene oxide (NiCo2O4@rGO) hybrid architectures directly deposited on nickel-foam (NF) are synthesized, showing kinetic and structural stability achieved by the rGO interlayers for improved energy density and cyclic stability of the hybrid supercapacitors.
Lithiophilic Co/Co4N nanoparticles embedded in hollow N-doped carbon nanocubes stabilizing lithium metal anodes for Li–air batteries
A lithiophilic Co/Co4N-N-doped carbon electrode displays a high coulombic efficiency (98.5%) and dendrite-free morphology for long-life Li–air batteries.
Ionic liquid modified SnO2 nanocrystals as a robust electron transporting layer for efficient planar perovskite solar cells
The ionic liquid, tetramethylammonium hydroxide, was introduced into SnO2 films to enhance the conductivity of both SnO2 and overlying perovskite film for perovskite solar cells with efficiency exceeding 21%.
Aromatic end-capped acceptor effects on molecular stacking and the photovoltaic performance of solution-processable small molecules
Four small molecules were designed and synthesized with various acceptors, and their acceptor effects on molecular properties and device performances were investigated. The molecules based on medium strong acceptors obtained excellent efficiencies (ranged from 8.5% to 10.1%).
Superhydrophilic amorphous Co–B–P nanosheet electrocatalysts with Pt-like activity and durability for the hydrogen evolution reaction
Superhydrophilic ternary Co–B–P nanosheets are developed as a hydrogen evolution electrocatalyst showing Pt-like catalytic activity and superior stability in alkaline media.
Ultrathin two-dimensional cobalt–organic framework nanosheets for high-performance electrocatalytic oxygen evolution
Two-dimensional cobalt–organic frameworks with abundant metal sites have been successfully prepared and directly adopted as efficient OER catalysts.
Unique Li4Ti5O12/TiO2 multilayer arrays with advanced surface lithium storage capability
Unique Li4Ti5O12/TiO2 multilayer arrays from a substrate-free method demonstrate advanced surface lithium storage capability.
Molecular blends of methylated-poly(ethylenimine) and amorphous porous organic cages for SO2 adsorption
Porous organic cage (POCs) are explored as a support for hazardous gas sorbents. The molecular mixing between the POC and methylated poly(ethylene imine) was observed and resulted in the improvement of mass transfer and thermal stability of the composite material.
Hydrogen plasma reduced potassium titanate as a high power and ultralong lifespan anode material for sodium-ion batteries
The abundance and low cost of sodium potentially enable application of sodium ion batteries for grid-scale energy storage.
Toward charge extraction in all-inorganic perovskite solar cells by interfacial engineering
CuInS2/ZnS QDs with tunable bandgaps were applied at the CsPbBr3/carbon interface for improved hole extraction and reduced electron–hole recombination. A PCE of as high as 8.42% was achieved for QDs tailored all-inorganic PSC in comparison with 6.01% for the pristine device.
‘Fish-scale’-mimicked stretchable and robust oil-wettability that performs in various practically relevant physically/chemically severe scenarios
A covalently cross-linked ‘reactive’ multilayer was strategically associated with a stretchable fibrous substrate to design a ‘fish-scale’-mimicked stretchable and durable interface, which was capable of sustaining high tensile deformation (150%) for 1000 times, and it was also efficient in performing under various physically/chemically severe scenarios.
Developing intercalation based anode materials for fluoride-ion batteries: topochemical reduction of Sr2TiO3F2via a hydride based defluorination process
Sr2TiO3F2−x, a potential anode material for fluoride ion batteries, is prepared in the charged state via selective low-temperature defluorination.
Photocatalytic glycerol oxidation on AuxCu–CuS@TiO2 plasmonic heterostructures
A novel AuxCu–CuS@TiO2 heterostructured catalyst with a periodic nanoporous morphology, exhibiting a plasmon-enhanced glycerol oxidation, was developed.
Intercalating cation specific self-repairing of vermiculite nanofluidic membrane
The balance between expanding and contracting forces of lamellar clay minerals was exploited for preparing self-repairable nanofluidic membranes.
Solid-phase hot-pressing synthesis of POMOFs on carbon cloth and derived phosphides for all pH value hydrogen evolution
A powerful solid-phase hot-pressing method was applied to grow POMOFs and derived phosphides on carbon cloth rapidly and uniformly.
Correction: Initiation and future prospects of colloidal metal halide double-perovskite nanocrystals: Cs2AgBiX6 (X = Cl, Br, I)
About this collection
Journal of Materials Chemistry A is proud to present this themed issue highlighting 2018’s rising stars of materials chemistry research. This issue gathers the very best work from materials chemists in the early stages of their independent career.
Each contributor was recommended by experts in their fields as carrying out work with the potential to influence future directions in materials chemistry. Congratulations to all of those who feature on their important work so far in the field of materials energy and sustainability.