Themed collection Journal of Materials Chemistry A HOT Papers
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Light-material interfaces for self-powered optoelectronics
This review overviews light-material interface technologies for realizing a self-powered wearable optoelectronic system.
J. Mater. Chem. A, 2021,9, 25694-25705
https://doi.org/10.1039/D1TA08892K
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In situ visualisation and analysis of dynamic single atom processes in heterogeneous catalysts
Heterogeneous chemical reactions catalyzed over solid surfaces at operating temperatures are used to produce a vital part of energy, food, healthcare products, cleaner environments and chemicals.
J. Mater. Chem. A, 2022,10, 5850-5862
https://doi.org/10.1039/D1TA08307D
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Anti-perovskites for solid-state batteries: recent developments, current challenges and future prospects
For the first time, we highlight recent experimental and atomistic modelling insights into Li- and Na-rich anti-perovskite battery materials, with particular attention given to their synthesisability, structures, ion transport and interfaces.
J. Mater. Chem. A, 2021,9, 18746-18772
https://doi.org/10.1039/D1TA03680G
Two-dimensional building blocks for photocatalytic ammonia production
This perspective summarizes the design and synthesis of two-dimensional building block based photocatalysts for light-induced NH3 production. The structure–performance relationship and mechanism of photocatalysts are highlighted.
J. Mater. Chem. A, 2021,9, 18733-18745
https://doi.org/10.1039/D0TA11201A
Support-based modulation strategies in single-atom catalysts for electrochemical CO2 reduction: graphene and conjugated macrocyclic complexes
An overview of two types of SACs for the CO2RR and the corresponding strategies to regulate the catalytic activity.
J. Mater. Chem. A, 2022,10, 5699-5716
https://doi.org/10.1039/D1TA09069K
Synergistically enhanced single-atomic site catalysts for clean energy conversion
This review highlights several important electrocatalytic reactions performed over single-atomic synergistic structures, including SAC-nanoparticles (SAC-NPs), SAC-clusters (SACCs), dual-atom sites (DACs), and single-atomic alloys (SAAs).
J. Mater. Chem. A, 2022,10, 5673-5698
https://doi.org/10.1039/D1TA08561A
Solar-driven interfacial evaporation toward clean water production: burgeoning materials, concepts and technologies
Burgeoning materials, concepts and technologies for solar-driven interfacial evaporation have been reviewed.
J. Mater. Chem. A, 2021,9, 27121-27139
https://doi.org/10.1039/D1TA08886F
Recent progress and prospects of polymeric hollow fiber membranes for gas application, water vapor separation and particulate matter removal
High-performance hollow fiber membranes can be produced through proper tailoring of spinning parameters.
J. Mater. Chem. A, 2021,9, 26454-26497
https://doi.org/10.1039/D1TA07093B
Cyclic stability of supercapacitors: materials, energy storage mechanism, test methods, and device
Supercapacitors, also known as electrochemical capacitors, have attracted more and more attention in recent decades due to their advantages of higher power density and long cycle life.
J. Mater. Chem. A, 2021,9, 24094-24147
https://doi.org/10.1039/D1TA06815F
Resolving buried optoelectronic features in metal halide perovskites via modulation spectroscopy studies
As research on both bulk and low dimensional metal halide perovskites (MHPs) continues to grow, the tools necessary to gain insights into their exotic and highly convoluted optoelectronic features must also expand.
J. Mater. Chem. A, 2021,9, 23746-23764
https://doi.org/10.1039/D1TA06484C
Steering the behavior of photogenerated carriers in semiconductor photocatalysts: a new insight and perspective
This review explores the mechanism of photogenerated carrier regulation from the aspect of the driving force of separation and transfer for photogenerated carrier dynamics.
J. Mater. Chem. A, 2021,9, 23765-23782
https://doi.org/10.1039/D1TA06899G
Advances in cellulose-metal organic framework composites: preparation and applications
This review emphasizes the recent advances in synthesis strategies, versatile structures and broad applications of cellulose-metal organic framework composites.
J. Mater. Chem. A, 2021,9, 23353-23363
https://doi.org/10.1039/D1TA06468A
MOF-based electrocatalysts for high-efficiency CO2 conversion: structure, performance, and perspectives
CO2 molecules are adsorbed by MOF-based catalysts with a moderately porous structure, which are subsequently converted by single metal atoms (Cu, Zn, Fe, Co, Ni, Bi, etc.) to value-added chemicals and low carbon fuels such as CO and C2H4.
J. Mater. Chem. A, 2021,9, 22710-22728
https://doi.org/10.1039/D1TA05960B
Revisiting the MIL-101 metal–organic framework: design, synthesis, modifications, advances, and recent applications
Synthesis of the MIL-101 framework has been attempted from different trivalent metal ions, rather than Cr, like: Fe, Al, V, Ti, Sc, and Mn. In addition, the amino-functionalized form has been successfully reported for some of them.
J. Mater. Chem. A, 2021,9, 22159-22217
https://doi.org/10.1039/D1TA06238G
Aluminium-based MIL-100(Al) and MIL-101(Al) metal–organic frameworks, derivative materials and composites: synthesis, structure, properties and applications
This review summarizes the synthesis, properties and applications of two related and particularly interesting mesoporous aluminium-based metal–organic frameworks (MOFs): MIL-100(Al) and MIL-101(Al).
J. Mater. Chem. A, 2021,9, 21483-21509
https://doi.org/10.1039/D1TA04444C
Separation of alkane and alkene mixtures by metal–organic frameworks
Metal–organic frameworks hold great promise for the separation of alkane and alkene mixtures in light of their diverse structures, high porosity, and tunable pore dimensions and surface functionality.
J. Mater. Chem. A, 2021,9, 20874-20896
https://doi.org/10.1039/D1TA04096K
The rise of metal–organic frameworks for electrolyte applications
This review highlights the advances and challenges in MOF-derived electrolytes for energy storage applications.
J. Mater. Chem. A, 2021,9, 20837-20856
https://doi.org/10.1039/D1TA05201B
An overview of flow cell architecture design and optimization for electrochemical CO2 reduction
Converting CO2 into value-added fuels or chemical feedstocks through electrochemical reduction is one of the several promising avenues to reduce atmospheric carbon dioxide levels and alleviate global warming.
J. Mater. Chem. A, 2021,9, 20897-20918
https://doi.org/10.1039/D1TA06101A
Chemical fixation of CO2 on nanocarbons and hybrids
This review concentrates on recent advanced strategies of carbon-based nanocatalysts for better CO2 transformation and discusses roles that nanocarbons play in catalytic systems.
J. Mater. Chem. A, 2021,9, 20857-20873
https://doi.org/10.1039/D1TA05080J
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Tuning the intrinsic catalytic activities of oxygen-evolution catalysts by doping: a comprehensive review
This review highlights doping effects on the intrinsic catalytic activities and oxygen evolution reaction mechanisms of state-of-the-art catalysts, including oxides, non-oxides and carbon-based catalysts, from experimental to theoretical studies.
J. Mater. Chem. A, 2021,9, 20131-20163
https://doi.org/10.1039/D1TA04032D
Gold-based nanoalloys: synthetic methods and catalytic applications
This review provides an overview of the recently reported gold-based nanoalloys, focusing on their general synthetic methods and potential catalytic applications.
J. Mater. Chem. A, 2021,9, 19025-19053
https://doi.org/10.1039/D1TA03646G
All-inorganic perovskite quantum dots as light-harvesting, interfacial, and light-converting layers toward solar cells
All inorganic perovskite quantum dots as light-harvesting, interfacial, and light-converting layers toward efficient and stable solar cells are summarized.
J. Mater. Chem. A, 2021,9, 18947-18973
https://doi.org/10.1039/D1TA02786G
The rise of flexible zinc-ion hybrid capacitors: advances, challenges, and outlooks
A comprehensive review summarizing the latest advance and critical challenges of the flexible zinc-ion hybrid capacitors, with outlooks towards potential future research directions.
J. Mater. Chem. A, 2021,9, 19054-19082
https://doi.org/10.1039/D1TA02775A
Modulating the electronic structure of nanomaterials to enhance polysulfides confinement for advanced lithium–sulfur batteries
Modulating electronic structure of nanomaterials via surface engineering for suppressing polysulfide shuttling in lithium–sulfur batteries are comprehensively summarized and outlooks of them are given in this review.
J. Mater. Chem. A, 2021,9, 18927-18946
https://doi.org/10.1039/D1TA02741G
Advances of the top-down synthesis approach for high-performance silicon anodes in Li-ion batteries
A comprehensive review of low-cost top-down approaches to enhance the electrochemical performance of silicon anodes, including future research directions.
J. Mater. Chem. A, 2021,9, 18906-18926
https://doi.org/10.1039/D1TA02711E
Carbocatalytic ozonation toward advanced water purification
This review summarizes the recent advances in carbocatalyzed ozonation and the corresponding surface engineering protocols and mechanistic insights.
J. Mater. Chem. A, 2021,9, 18994-19024
https://doi.org/10.1039/D1TA02953C
Recent advances in electrocatalytic chloride oxidation for chlorine gas production
This review provides a critical overview of chlorine evolution reaction (CER) including a fundamental understanding of reaction mechanisms, recent advances in developing CER catalysts, and future opportunities in this field.
J. Mater. Chem. A, 2021,9, 18974-18993
https://doi.org/10.1039/D1TA02745J
Interfacial design of thick sulfur cathodes to achieve high energy density and stability
Strategies to control the various interfaces of a sulfur cathode toward high stability and high energy density are discussed.
J. Mater. Chem. A, 2021,9, 17129-17142
https://doi.org/10.1039/D1TA04059F
Recent progress in electrocatalysts and electrodes for portable fuel cells
This review highlights the recent progress in designing electrocatalysts for producing high performance fuel cells with truly potential applicability to be used in portable devices.
J. Mater. Chem. A, 2021,9, 17065-17128
https://doi.org/10.1039/D1TA03644K
Understanding the functions and modifications of interfaces in membrane electrode assemblies of proton exchange membrane fuel cells
Four functions of interfaces in MEA are proposed: the mechanical adhesion, charge transfer, mass transport, and heat conduction.
J. Mater. Chem. A, 2021,9, 15111-15139
https://doi.org/10.1039/D1TA01591E
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Recent progress in self-healing polymers and hydrogels based on reversible dynamic B–O bonds: boronic/boronate esters, borax, and benzoxaborole
Reversible boronic ester-based polymers/hydrogels achieve cutting-edge biomedical applications including drug delivery, adhesion, bioimplants, healthcare monitoring by self-healing, injectability, biocompatibility, multi-responsiveness to stimuli.
J. Mater. Chem. A, 2021,9, 14630-14655
https://doi.org/10.1039/D1TA02308J
A review on g-C3N4 incorporated with organics for enhanced photocatalytic water splitting
g-C3N4 incorporated with organics for enhanced photocatalytic water splitting.
J. Mater. Chem. A, 2021,9, 12898-12922
https://doi.org/10.1039/D1TA00890K
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Advanced research trends in dye-sensitized solar cells
Dye-sensitized solar cells (DSSCs) are an efficient photovoltaic technology for powering electronic applications such as wireless sensors with indoor light.
J. Mater. Chem. A, 2021,9, 10527-10545
https://doi.org/10.1039/D1TA00690H
Metal–organic frameworks as separators and electrolytes for lithium–sulfur batteries
This review provides a specialized summary of metal–organic frameworks as separators and electrolytes for lithium–sulfur batteries, including design strategies and applications.
J. Mater. Chem. A, 2021,9, 7301-7316
https://doi.org/10.1039/D0TA11624F
Practical strategies for enhanced performance of anode materials in Na+/K+-ion batteries
In this review, the effects of different strategies, such as engineering heterojunctions or diffusion paths, and designing alloys or hollow structures, are discussed in order to address the problems faced by the anode materials for SIBs/PIBs.
J. Mater. Chem. A, 2021,9, 7317-7335
https://doi.org/10.1039/D0TA12417F
Overview of cellulose-based flexible materials for supercapacitors
Cellulose-based materials as supercapacitor components including flexible electrodes, electrolytes and membranes are reviewed.
J. Mater. Chem. A, 2021,9, 7278-7300
https://doi.org/10.1039/D0TA10504J
Rational designs of interfacial-heating solar-thermal desalination devices: recent progress and remaining challenges
This review summarizes recent advances and presents an overview of design strategies in interfacial-heating solar-thermal desalination devices.
J. Mater. Chem. A, 2021,9, 6612-6633
https://doi.org/10.1039/D0TA11911C
CALPHAD as a powerful technique for design and fabrication of thermoelectric materials
This review focuses on the guiding role of CALculation of PHAse Diagram (CALPHAD): providing comprehensive thermodynamic and kinetic information to bridge the theoretical design and experimental synthesis of TE materials.
J. Mater. Chem. A, 2021,9, 6634-6649
https://doi.org/10.1039/D0TA12620A
Chalcogenide-based inorganic sodium solid electrolytes
Chalcogenide-based ISSEs are summarized in view of the crystal structure. Structural characteristics, structure–property relationships, synthetic routes as well as chemical/electrochemical stability are systematically discussed in the review.
J. Mater. Chem. A, 2021,9, 5134-5148
https://doi.org/10.1039/D0TA10994K
Development of solid electrolytes in Zn–air and Al–air batteries: from material selection to performance improvement strategies
This review provides a guiding and comprehensive summary of the basic understanding and manufacturing ideas of the solid electrolyte for Zn–air and Al–air batteries.
J. Mater. Chem. A, 2021,9, 4415-4453
https://doi.org/10.1039/D0TA11068J
Oxygen-induced defect-healing and photo-brightening of halide perovskite semiconductors: science and application
The advancement of physical/chemical insights into oxygen induced defect passivation and the associated photo-brightening in the emerging metal halide perovskite semiconductors towards various optoelectronic applications is summarized.
J. Mater. Chem. A, 2021,9, 4379-4414
https://doi.org/10.1039/D0TA10946K
Progress in and application prospects of advanced and cost-effective iron (Fe)-based cathode materials for sodium-ion batteries
Sodium-ion batteries (SIBs) have received extensive attention in recent years and are expected to become one of the alternatives to lithium-ion batteries (LIBs).
J. Mater. Chem. A, 2021,9, 1938-1969
https://doi.org/10.1039/D0TA10610K
Topological materials and topologically engineered materials: properties, synthesis, and applications for energy conversion and storage
This review provides a summary of various energy-related topological materials and topologically engineered materials and explore the unique nontrivial topology properties and topological design toward their potential applications in energy fields.
J. Mater. Chem. A, 2021,9, 1297-1313
https://doi.org/10.1039/D0TA11072H
Porous evaporators with special wettability for low-grade heat-driven water desalination
Design of novel special wettable evaporators with robust stability for high-performances porous interface distillation.
J. Mater. Chem. A, 2021,9, 702-726
https://doi.org/10.1039/D0TA09193F
High-entropy alloys: emerging materials for advanced functional applications
Accompanied by enhancements in the ability to fabricate materials, alloy-based materials have advanced from binary alloy systems to complicated compositions along with affording newer applications, which accelerates the evolution of civilization.
J. Mater. Chem. A, 2021,9, 663-701
https://doi.org/10.1039/D0TA09601F
State-of-the-art surface oxide semiconductors of liquid metals: an emerging platform for development of multifunctional two-dimensional materials
Two-dimensional (2D) surface oxide films of post-transition liquid metals and their alloys have been recently introduced as an emerging category of ultra-thin functional semiconductor materials with fascinating physico-chemical and structural characteristics.
J. Mater. Chem. A, 2021,9, 34-73
https://doi.org/10.1039/D0TA08476J
Probing heat generation and release in a 57.5 A h high-energy-density Li-ion pouch cell with a nickel-rich cathode and SiOx/graphite anode
This study clarifies the heat generation and release of a 57.5 Ah HED (266.9 W h kg−1) Li-ion cell with a nickel-rich cathode and SiOx/graphite anode. Significant heat accumulation and delayed heat release effects in large-format cells are uncovered.
J. Mater. Chem. A, 2022,10, 1227-1235
https://doi.org/10.1039/D1TA08597B
Synergetic electronic modulation and nanostructure engineering of heterostructured RuO2/Co3O4 as advanced bifunctional electrocatalyst for zinc–air batteries
Synergistic electronic modulation and nanostructure engineering are realized by the synthesis of hierarchical RuO2/Co3O4 hollow spheres, presenting excellent bifunctional electrocatalytic activity and promising application in zinc–air batteries.
J. Mater. Chem. A, 2021,9, 26669-26675
https://doi.org/10.1039/D1TA09278B
Ultrahigh energy density with excellent thermal stability in lead-free multilayer ceramic capacitors via composite strategy design
A universal composite strategy design to fabricate MLCCs with finer grains, higher energy density, higher energy efficiency, and better stability.
J. Mater. Chem. A, 2021,9, 25914-25921
https://doi.org/10.1039/D1TA07643D
Hypercrosslinking chiral Brønsted acids into porous organic polymers for efficient heterogeneous asymmetric organosynthesis
Hypercrosslinking chiral Brønsted acids into porous polymers was readily achieved, and display excellent activity, enantioselectivity and recyclability for asymmetric transfer hydrogenation.
J. Mater. Chem. A, 2021,9, 25369-25373
https://doi.org/10.1039/D1TA07449K
Multi-bioinspired self-cleaning energy-free cooling coatings
A superhydrophobic porous coating was developed for long-term daytime radiative cooling by mimicking the structures and functions of the Cyphochilus beetle, Saharan silver ant and lotus leaf.
J. Mater. Chem. A, 2021,9, 24276-24282
https://doi.org/10.1039/D1TA07953K
A simple, rapid and scalable synthesis approach for ultra-small size transition metal selenides with efficient water oxidation performance
A simple, rapid and scalable microwave method for preparing ultra-small size transition metal selenides to boost water oxidation.
J. Mater. Chem. A, 2021,9, 24261-24267
https://doi.org/10.1039/D1TA07644B
Trimetallic PtNiCo branched nanocages as efficient and durable bifunctional electrocatalysts towards oxygen reduction and methanol oxidation reactions
A trimetallic PtNiCo branched nanocage was fabricated via an etching process. The optimized electronic structure with Co and Ni accelerate the sluggish kinetic process in ORR and MOR with significantly catalytic enhancement and high durability.
J. Mater. Chem. A, 2021,9, 23444-23450
https://doi.org/10.1039/D1TA07488A
A high-performance cathode for potassium-ion batteries based on uniform P3-type K0.5Mn0.8Co0.1Ni0.1O2 porous microcuboids
Uniform P3-type K0.5Mn0.8Co0.1Ni0.1O2 porous microcuboids are prepared by a low-cost ethanol mediated coprecipitation strategy, exhibiting improved potassium storage properties.
J. Mater. Chem. A, 2021,9, 22820-22826
https://doi.org/10.1039/D1TA07108D
Efficient hydrogen production by saline water electrolysis at high current densities without the interfering chlorine evolution
Replacing the oxygen evolution reaction with the hydrazine oxidation reaction enables alkaline–saline water electrolysis to occur at a high current density without the interfering chlorine evolution.
J. Mater. Chem. A, 2021,9, 22248-22253
https://doi.org/10.1039/D1TA05703K
Nitrogen-centered radical reaction leading to energetic materials: a mild and efficient access to N–N bridged compounds
A novel nitrogen-centered radical reaction leading to the formation of an N–N coupled biheterocycle was discovered, which features high efficiency and greenness at room temperature without external assistance.
J. Mater. Chem. A, 2021,9, 21685-21688
https://doi.org/10.1039/D1TA06659E
Scalable and hierarchically designed MOF fabrics by netting MOFs into nanofiber networks for high-performance solar-driven water purification
High-performance MOF fabrics were prepared by a novel “netting MOF” strategy and exhibited enhanced capacity for the solar-driven production of potable water from CWA simulant sewage.
J. Mater. Chem. A, 2021,9, 21005-21012
https://doi.org/10.1039/D1TA05589E
One-dimensional conductive metal–organic framework nanorods: a highly selective electrocatalyst for the oxygen reduction to hydrogen peroxide
Mn–TCNQ acts as an efficient electrocatalyst to boost 2e− oxygen reduction reaction, capable of achieving an outstanding H2O2 selectivity over 98% and a high H2O2 yield of 142.6 ppm h−1 in an alkaline medium.
J. Mater. Chem. A, 2021,9, 20345-20349
https://doi.org/10.1039/D1TA05281K
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Oriented growth of semiconducting TCNQ@Cu3(BTC)2 MOF on Cu(OH)2: crystallographic orientation and pattern formation toward semiconducting thin-film devices
Oriented film and pattern of TCNQ@Cu3(BTC)2(HKUST-1) fabricated via epitaxial growth exhibit anisotropic electrical properties toward MOF-based (flexible) thin-film smart device applications, such as transistors and thermoelectric thin films.
J. Mater. Chem. A, 2021,9, 19613-19618
https://doi.org/10.1039/D1TA02968A
Constructing the CoO/Co4N heterostructure with an optimized electronic structure to boost alkaline hydrogen evolution electrocatalysis
A CoO/Co4N heterostructure electrocatalyst has been successfully constructed and shown remarkable hydrogen evolution reaction (HER) performance and long-term stability in alkaline electrolytes.
J. Mater. Chem. A, 2021,9, 18208-18212
https://doi.org/10.1039/D1TA04691H
Three-dimensional covalent organic framework membrane for efficient proton conduction
A free-standing 3D COF membrane with interconnected nanochannels was fabricated using interfacial polymerization method, and exhibited ultrafast proton conduction after being loaded with proton carriers.
J. Mater. Chem. A, 2021,9, 17720-17723
https://doi.org/10.1039/D1TA05005B
Environment stable ionic organohydrogel as a self-powered integrated system for wearable electronics
A rationally designed hydrogel either as the electrolyte for a supercapacitor or the sensing element for a functional component is proposed. With the help of machine learning, the systems present promising applications in wearable devices.
J. Mater. Chem. A, 2021,9, 16345-16358
https://doi.org/10.1039/D1TA03618A
Constructing an electron-rich interface over an Sb/Nb2CTx–MXene heterojunction for enhanced electrocatalytic nitrogen reduction
The coupling of Sb and Nb2CTx could generate an electron-rich interface, which could effectively promote N2 activation and hydrogenation while restricting the competing hydrogen evolution.
J. Mater. Chem. A, 2021,9, 15955-15962
https://doi.org/10.1039/D1TA03662A
Accurately metal-modulated bimetallic metal–organic frameworks as advanced trifunctional electrocatalysts
The atomic-level metal-modulated MOFs as an advanced trifunctional electrocatalyst for oxygen evolution reaction, hydrogen evolution reaction and oxygen reduction reaction.
J. Mater. Chem. A, 2021,9, 14682-14690
https://doi.org/10.1039/D1TA01224J
Interfacial regulation of dendrite-free zinc anodes through a dynamic hydrophobic molecular membrane
A DHM acts as a resistor to regulate the distribution and reduction rates of zinc species, thus refining grains and facilitating the formation of dendrite-free zinc anodes to improve battery cycle stability.
J. Mater. Chem. A, 2021,9, 14265-14269
https://doi.org/10.1039/D1TA01697K
Cross structured two-dimensional violet phosphorene with extremely high deformation resistance
Cross structures have been well adopted as load bearing structures due to their excellent mechanical properties.
J. Mater. Chem. A, 2021,9, 13855-13860
https://doi.org/10.1039/D1TA02595C
A Na-containing Pt cocatalyst for efficient visible-light-induced hydrogen evolution on BaTaO2N
A well-dispersed Pt cocatalyst obtained using Na as a promoter provides enhanced photocatalytic hydrogen evolution over BaTaO2N under visible light.
J. Mater. Chem. A, 2021,9, 13851-13854
https://doi.org/10.1039/D1TA01162F
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New approach for rapidly determining Pt accessibility of Pt/C fuel cell catalysts
Rapid screening of Pt/C PEMFC catalysts through RDE methods to accelerate the development of catalysts with an optimal spatial distribution of Pt within the carbon support.
J. Mater. Chem. A, 2021,9, 13471-13476
https://doi.org/10.1039/D1TA01769A
11.5% efficient Cu2ZnSn(S,Se)4 solar cell fabricated from DMF molecular solution
The weak Sn–O coordination bonds in Sn(DMF)2Cl4 result in the formation of a kesterite phased (Cu2ZnSnS4) precursor film and thus fabrication of a highly efficient Cu2ZnSn(S,Se)4 absorber from DMF solution.
J. Mater. Chem. A, 2021,9, 12981-12987
https://doi.org/10.1039/D1TA01871J
Triboelectric energy harvesting using conjugated microporous polymer nanoparticles in polyurethane films
Conjugated microporous polymers offer potential as triboelectrification materials for triboelectric nanogenerators.
J. Mater. Chem. A, 2021,9, 12560-12565
https://doi.org/10.1039/D1TA01732B
About this collection
This on-going web collection features all the articles published in Journal of Materials Chemistry A in 2021 marked as HOT (selected by our Editors as especially significant based on reviewers’ recommendations and their own appraisal). Congratulations to all the authors whose articles are featured!