Themed collection Journal of Materials Chemistry A Emerging Investigators
Journal of Materials Chemistry A profiles: contributors to the Emerging Investigators 2019 issue
Journal of Materials Chemistry A profiles contributors to the Emerging Investigators issue.
Colloidal nanoparticle inks for printing functional devices: emerging trends and future prospects
Emerging trends and future prospects for nanoparticle synthesis and colloidal ink formulation, additive printing processes, and functional devices are highlighted.
The effects of mechanical constriction on the operation of sulfide based solid-state batteries
This review explores the effects of mechanical constriction on the phase stability of ceramic-sulfide solid-electrolytes.
Review on anionic redox in sodium-ion batteries
In this review, systematic overlook of recent research on anionic redox in SIBs is given, along with discussion of relative theories that explain the mechanism of activating and stabilizing anionic redox activity.
Real-time monitoring of stress development during electrochemical cycling of electrode materials for Li-ion batteries: overview and perspectives
Monitoring stress development in electrodes in-situ provides a host of real-time information on electro-chemo-mechanical aspects as functions of SOC and electrochemical potential.
Probing and quantifying cathode charge heterogeneity in Li ion batteries
Understanding charge heterogeneity can inform designing high performance Li ion battery cathodes.
Two-dimensional lead-free halide perovskite materials and devices
The progresses, challenges, and perspectives on emerging 2D lead-free halide perovskite materials and relevant light-emitting diodes/solar cells have been elaborately summarized.
2D molecular crystal lattices: advances in their synthesis, characterization, and application
2D molecular crystal lattices form a compelling class of 2D materials with synthetically-tunable properties and the potential to spawn a new generation of devices for optoelectronics and energy sustainability.
Block copolymer-based porous carbons for supercapacitors
This short review highlights the recent development of block copolymer-based porous carbons as supercapacitor electrodes.
Multiple roles of a heterointerface in two-dimensional van der Waals heterostructures: insights into energy-related applications
This review summarizes the recent advancements in constructing two dimensional (2D) van der Waals (vdW) heterostructures for applications in water splitting, Li+/Na+ ion batteries, and supercapacitors.
Olefin/paraffin separation through membranes: from mechanisms to critical materials
The separation of olefin and paraffin is one of the most challenging and energy-intensive processes. In this review, we summarize the separation mechanisms and materials developed for membrane separation of olefin and paraffin.
Hydrogen-bonded diketopyrrolopyrrole derivatives for energy-related applications
The impact of H-bonding on the optoelectronic properties and device morphology of diketopyrrolopyrrole derivatives is reviewed.
Recent advances in exfoliation techniques of layered and non-layered materials for energy conversion and storage
Recent advances in exfoliation techniques of layered and non-layered materials for energy conversion and storage are summarized.
Interfacial effects in supported catalysts for electrocatalysis
Significant efforts have been devoted to design and develop supported catalysts for electrochemical energy conversion and storage systems since they have enhanced electrocatalytic activity.
Scalable nanomanufacturing of inkjet-printed wearable energy storage devices
The nanomaterial-based wearable energy storage devices will usher in exciting opportunities in emerging technologies such as consumer electronics, pervasive computing, human–machine interface, robotics, and the Internet of Things.
From fullerene acceptors to non-fullerene acceptors: prospects and challenges in the stability of organic solar cells
This review highlights the opportunities and challenges in stability of organic solar cells arising from the emergence of non-fullerene acceptors.
Ambient dinitrogen electrocatalytic reduction for ammonia synthesis
Recent advances in the fabrication of novel electrocatalysts for dinitrogen reduction to ammonia synthesis under ambient conditions are comprehensively reviewed.
Organic quinones towards advanced electrochemical energy storage: recent advances and challenges
This review provides an up-to-date summary of the progress of organic quinones as electroactive materials for advanced electrochemical energy storage devices.
Viologen-inspired functional materials: synthetic strategies and applications
Viologen-inspired aromatic molecules, polymers, and functional materials and their versatile applications will be introduced in this review.
Self-supported nanostructured iridium-based networks as highly active electrocatalysts for oxygen evolution in acidic media
IrOx-networks exhibit excellent catalytic activity towards oxygen evolution in acid media. A novel alternating sputtering process enabled simple and scalable fabrication of self-supported and highly dispersed iridium networks.
Revealing structural evolution of PbS nanocrystal catalysts in electrochemical CO2 reduction using in situ synchrotron radiation X-ray diffraction
In situ synchrotron radiation X-ray diffraction studies reveal reaction environment-induced PbS–PbCO3–Pb evolution under eCO2RR conditions. The produced Pb nanocatalyst exhibits 97.6% FE (−1.2 V) and 74.9 mA mgPb−1 MA (−1.4 V).
Band gap modulation in zirconium-based metal–organic frameworks by defect engineering
A simple defect engineering approach to systematically tune the band gap of the prototypical zirconium-based metal–organic framework UiO-66 is reported. Defect engineered materials display enhanced photocatalytic activity.
Elucidating metal and ligand redox activities of a copper-benzoquinoid coordination polymer as the cathode for lithium-ion batteries
A novel 1D copper-benzoquinoid coordination polymer with both metal and ligand redox activities delivered a capacity as high as 268 mA h g−1.
Inertial effective mass as an effective descriptor for thermoelectrics via data-driven evaluation
Data-driven analysis shows that low effective mass is favorable for high band degeneracy and power factor towards new thermoelectric materials.
Comparisons of WO3 reduction to HxWO3 under thermochemical and electrochemical control
In situ optical microscopy measurements show that thermochemical H-spillover and electrochemical H-intercalation in tungsten oxide proceed by a congruent mechanism at room temperature in the presence of an acidic electrolyte.
Graphene quantum dots/graphene fiber nanochannels for osmotic power generation
Graphene quantum dots were intercalated into graphene fiber nanochannel as a nano-charger for high surface charge density. The hybrid nanochannel shows efficient ion transport behaviors and ion selectivity facilitating superior osmotic power generation.
Tin nanoparticles embedded in a carbon buffer layer as preferential nucleation sites for stable sodium metal anodes
High-capacity sodium anodes with long-term reversibility and stability are presented by synthesizing tin nanoparticles homogeneously embedded within a conductive carbon network.
Self-assembled propylammonium cations at grain boundaries and the film surface to improve the efficiency and stability of perovskite solar cells
Large size cation (PA) was introduced into the grain boundary and film surface of the 3D perovskite to improve the solar cell efficiency and moisture stability.
Hollow TiO2 submicrospheres assembled by tiny nanocrystals as superior anode for lithium ion battery
Hollow TiO2 submicrospheres assembled by 10 nm-sized units via a facile hydrothermal strategy exhibit excellent rate capability and long-term stability.
Boron-nitride/carbon-nanotube hybrid aerogels as multifunctional desulfurisation agents
Porous boron nitride particles were embedded within carbon nanotube aerogels to produce electrically-conducting sorbents that combine remarkable desulfurisation performance with the capability for rapid, energy-efficient Joule-heating regeneration.
Lattice strain and texture analysis of superhard Mo0.9W1.1BC and ReWC0.8via diamond anvil cell deformation
Mo0.9W1.1BC and ReWC0.8 are compressed nonhydrostatically to explore anisotropic deformation behavior and better comprehend hard materials. Slip is likely dictated by planar density in ReWC0.8 and directional covalent B–B chains in Mo0.9W1.1BC.
Reversible control of magnetism: on the conversion of hydrated FeF3 with Li to Fe and LiF
Coupled CV/SQUID measurements allow tracing the changes in magnetization during conversion reaction of FeF3·3H2O in a Li-ion cell.
Assessing negative thermal expansion in mesoporous metal–organic frameworks by molecular simulation
Molecular simulations reveal that mesoporous metal–organic frameworks display large volumetric negative thermal expansion, which has a considerable effect on mechanical stability, outlining an alternative application for these ultra-porous materials.
Improving selectivity of CO reduction via reducing the coordination of critical intermediates
Reducing the coordination of critical intermediates can improve the selectivity of electrochemical CO reduction.
A carbon dot-catalyzed transesterification reaction for the production of biodiesel
Biodiesel fuel production remains one of the most promising alternatives to non-renewable fossil fuels such as conventional oil and diesel.
Single-phase Ni5P4–copper foam superhydrophilic and aerophobic core–shell nanostructures for efficient hydrogen evolution reaction
A facile route for electrochemical synthesis of single-phase Ni5P4 on copper foam results in a core-shell nanostructures catalyst for the efficient generation of hydrogen with a very less overpotential and excellent stability at high current density.
Understanding the characteristics of conducting polymer-redox biopolymer supercapacitors
A model is developed to explain and predict the characteristics of conducting polymer-redox biopolymer supercapacitors.
Cryptomelane K1.33Mn8O16 as a cathode for rechargeable aqueous zinc-ion batteries
Reversible intercalation of Zn ions in tetragonal K1.33Mn8O16 delivers 312 mA h g−1 capacity at a galvanostatic cycling rate of 0.1C with an average voltage of 1.5 V.
Enhanced structural stability and overall conductivity of Li-rich layered oxide materials achieved by a dual electron/lithium-conducting coating strategy for high-performance lithium-ion batteries
A dual coating of LATP and CNTs accelerates the transportation of Li+ and electrons, resulting in improved rate capability.
Chemo-mechanical degradation in V2O5 thin film cathodes of Li-ion batteries during electrochemical cycling
We have devised an approach to fabricate dense textured V2O5 thin films, which allows us to scrutinize the root cause of capacity fade in V2O5 cathodes of Li-ion batteries.
The effect of structural dimensionality on carrier mobility in lead-halide perovskites
Changes in perovskite structural dimensionality brought by mixing A-site cations play an important role in determining the measured charge carrier mobility, and in the solar cell performance.
Structural engineering to maintain the superior capacitance of molybdenum oxides at ultrahigh mass loadings
An ultrahigh loaded MoO3−x electrode was developed with improved rate capability through incorporating layered structure graphite sheets and oxygen functional groups.
High yield electrochemical exfoliation synthesis of tin selenide quantum dots for high-performance lithium-ion batteries
We report cathodic exfoliation of bulk SnSe for a high yield (>90%) synthesis of sub-5 nm scale SnSe quantum dots.
Porous boron nitride for combined CO2 capture and photoreduction
Moving from hexagonal boron nitride (h-BN), a well-known crystalline insulator, to amorphous BN, leads to the creation of a semiconductor able to photoreduce CO2 in the gas/solid phase, under UV-vis and pure visible light.
Visualizing percolation and ion transport in hybrid solid electrolytes for Li–metal batteries
Hybrid solid state electrolyte structure was imaged using synchrotron nanotomography. Accessible surface area of ceramic particles in the electrolytes governs ion transport.
Origins of boron catalysis in peroxymonosulfate activation and advanced oxidation
Amorphous boron is employed as a novel and high-performance metal-free catalyst for activation of peroxymonosulfate for degrading various organic contaminants in water.
Nanosheets assembled into nickel sulfide nanospheres with enriched Ni3+ active sites for efficient water-splitting and zinc–air batteries
Nanosheets assembled into nickel sulfide nanospheres were synthesized in a controlled manner, and exhibited superior tri-functional activities owing to optimized binding with hydrogen/oxygen intermediates.
A polyaspartic acid sodium interfacial layer enhances surface trap passivation in perovskite solar cells
A biopolymer PASP layer works effectively to passivate the surface traps in MAPbI3 perovskite solar cells.
Rational construction of MoS2/Mo2N/C hierarchical porous tubular nanostructures for enhanced lithium storage
The fabrication of a unique heterostructure composed of MoS2/Mo2N with nitrogen doped carbon was synthesized by a stepwise cooperative assembly-directed strategy.
Confinement of subnanometric PdZn at a defect enriched ZnO/ZIF-8 interface for efficient and selective CO2 hydrogenation to methanol
Subnanometric PdZn at a defect enriched ZnO/ZIF-8 interface acts as an efficient and selective catalyst for CO2 hydrogenation to methanol.
Selectivity for ethanol partial oxidation: the unique chemistry of single-atom alloy catalysts on Au, Ag, and Cu(111)
Doping of a strong-binding single-atom element into inert close-packed substrates leads to highly active and selective initial dehydrogenation at the α-C–H site of adsorbed ethanol.
A CoHCF system with enhanced energy conversion efficiency for low-grade heat harvesting
Cobalt hexacyanoferrate (CoHCF) materials were used for TRECs; when complexed with HCNTs they show higher heat-to-electricity conversion efficiency.
Revealing structure–activity links in hydrazine oxidation: doping and nanostructure in carbide–carbon electrocatalysts
To expand the range of hydrazine oxidation catalysts active in alkaline pH – a key challenge in fuel cell electrocatalysis – we studied the effect of doping on the nanostructure of carbide–carbon composites.
Post-synthesis deposition of mesoporous niobic acid with improved thermal stability by kinetically controlled sol–gel overcoating
An ordered mesoporous niobia catalyst is synthesized by niobia overcoating on silica and shows high activity and stability for acid catalysis.
Discovery of a self-healing catalyst for the hydrolytic dehydrogenation of ammonia borane
Sustainable catalysts based on earth-abundant elements are considered as economical alternatives to precious-metal-bearing catalysts and could be impactful for many applications.
How far does the defect tolerance of lead-halide perovskites range? The example of Bi impurities introducing efficient recombination centers
Experimental and theoretical study on the effect of shallow and deep defects on photovoltaic performance, luminescence, surface photovoltage, and density of states.
Preparation and characterization of crosslinked poly(vinylimidazolium) anion exchange membranes for artificial photosynthesis
The dependence of small molecule transport on the water content of ion exchange materials frustrates the development of membranes with both high ionic conductivity and low alcohol permeability for artificial photosynthesis devices.
Ultra-stable 4H-gold nanowires up to 800 °C in a vacuum
The in situ TEM observation disclosed that the 4H-phase Au nanowire can maintain stable ABCB stacking up to 800 °C without significant phase changes or melting.
About this collection
Journal of Materials Chemistry A is proud to present this themed issue highlighting 2019’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.