Transition metal nitrides for electrochemical energy applications

Chemical Society Reviews, Journal Year: 2020, Volume and Issue: 50(2), P. 1354 - 1390

Published: Dec. 10, 2020

This review comprehensively summarizes the progress on structural and electronic modulation of transition metal nitrides for electrochemical energy applications.

Language: Английский

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Dual Single‐Atomic Ni‐N₄ and Fe‐N₄ Sites Constructing Janus Hollow Graphene for Selective Oxygen Electrocatalysis

Advanced Materials, Journal Year: 2020, Volume and Issue: 32(30)

Published: June 22, 2020

Nitrogen-coordinated metal single atoms in carbon have aroused extensive interest recently and been growing as an active research frontier a wide range of key renewable energy reactions devices. Herein, step-by-step self-assembly strategy is developed to allocate nickel (Ni) iron (Fe) respectively on the inner outer walls graphene hollow nanospheres (GHSs), realizing separate-sided different single-atom functionalization graphene. The Ni or Fe atom demonstrated be coordinated with four N via formation Ni-N4 Fe-N4 planar configuration. /GHSs/Fe-N4 Janus material exhibits excellent bifunctional electrocatalytic performance, which clusters dominantly contribute high activity toward oxygen reduction reaction (ORR), while are responsible for evolution (OER). Density functional theory calculations demonstrate structures reactivities ORR OER. endows rechargeable Zn-air battery efficiency cycling stability air-cathode, outperforming that benchmark Pt/C+RuO2 air-cathode. current work paves new avenue precise control sites surface high-performance selective electrocatalysts.

Language: Английский

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Design Strategies for Development of TMD-Based Heterostructures in Electrochemical Energy Systems

Matter, Journal Year: 2020, Volume and Issue: 2(3), P. 526 - 553

Published: March 1, 2020

Language: Английский

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Metallenes as functional materials in electrocatalysis

Chemical Society Reviews, Journal Year: 2021, Volume and Issue: 50(12), P. 6700 - 6719

Published: Jan. 1, 2021

2D metals, metallenes, feature exciting opportunities at the forefront of electrocatalysis. We bring to attention metallene preparation techniques and modification strategies for derivation highly functional metallenes in key electrocatalytic applications.

Language: Английский

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Heterostructured Catalysts for Electrocatalytic and Photocatalytic Carbon Dioxide Reduction

Advanced Functional Materials, Journal Year: 2020, Volume and Issue: 30(24)

Published: April 3, 2020

Abstract Heterostructured catalysts are hybrid materials that contain interfaces between their constituents formed through combinations of multiple solid‐state materials. The presence institutes a synergistic effect endows the catalyst with superior performance and appreciable potential in diverse range catalytic applications, including electrocatalytic photocatalytic reduction carbon dioxide. These promising can support feasible method for large‐scale processing valuable carbonaceous feedstock or fuel generation alleviation atmospheric dioxide levels. Such technologies will serve as much‐needed remedy global energy environmental crisis. A broad spectrum recently developed heterostructured pertaining to is evaluated. insights included relevance refresh fundamentals electron transfer processes leading mechanistic pathways yielding possible multitude products. Detailed discussions provide rational understanding how resultant properties from various useful enhancing function. Lastly, profiles structures together modification strategies employed interest highlight current challenges directions future development.

Language: Английский

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Structural and Electronic Optimization of MoS₂ Edges for Hydrogen Evolution

Journal of the American Chemical Society, Journal Year: 2019, Volume and Issue: 141(46), P. 18578 - 18584

Published: Nov. 6, 2019

The activity and accessibility of MoS2 edge sites are critical to deliver high hydrogen evolution reaction (HER) efficiency. Here, a porous carbon network confining ultrasmall N-doped nanocrystals (N-MoS2/CN) is fabricated by self-templating strategy, which realizes synergistically structural electronic modulations edges. Experiments density functional theory calculations demonstrate that the N dopants could activate edges for HER, while active from N-MoS2 nanocrystals. Consequently, N-MoS2/CN possesses superior HER with an overpotential 114 mV at 10 mA cm-2 excellent stability over h, delivering one best MoS2-based electrocatalysts. Moreover, this study opens new venue optimizing materials enhanced accessible catalytic energy-related applications.

Language: Английский

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Cactus-like NiCo2S4@NiFe LDH hollow spheres as an effective oxygen bifunctional electrocatalyst in alkaline solution

Applied Catalysis B Environment and Energy, Journal Year: 2021, Volume and Issue: 286, P. 119869 - 119869

Published: Jan. 8, 2021

Language: Английский

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Recent advances in structural engineering of MXene electrocatalysts

Journal of Materials Chemistry A, Journal Year: 2020, Volume and Issue: 8(21), P. 10604 - 10624

Published: Jan. 1, 2020

This review highlights the recent advances in structural engineering of MXene electrocatalysts for hydrogen evolution reaction and beyond.

Language: Английский

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Recent advances of MXenes as electrocatalysts for hydrogen evolution reaction

npj 2D Materials and Applications, Journal Year: 2021, Volume and Issue: 5(1)

Published: Sept. 9, 2021

Abstract MXenes, an emerging two-dimensional (2D) transition metal carbides, nitrides and carbonitrides, have exhibited great potential as electrocatalysts for hydrogen evolution reaction (HER) due to the excellent characters, including structural chemical stability, superior electrical conductivity, large active surface area. In this comprehensive study, firstly, preparation advances of MXenes are systematically summarized. Then, representative applications MXenes-based HER introduced, from experimental theoretical aspects. Thirdly, strategies improving catalytic activity demonstrated, such optimizing sites by termination modification metal-atom doping, increasing fabricating various nanostructures. Finally, existing challenges new opportunities also elucidated. This paper provides reference future development efficient production through water-splitting technology.

Language: Английский

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Interface engineering of oxygen-vacancy-rich CoP/CeO2 heterostructure boosts oxygen evolution reaction

Chemical Engineering Journal, Journal Year: 2020, Volume and Issue: 395, P. 125160 - 125160

Published: April 22, 2020

Language: Английский

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