Transition metal-based bimetallic MOFs and MOF-derived catalysts for electrochemical oxygen evolution reaction

Energy & Environmental Science, Год журнала: 2021, Номер 14(4), С. 1897 - 1927

Опубликована: Янв. 1, 2021

The review summarizes transition metal-based bimetallic MOFs and their derived materials as electrocatalytic for the OER. mechanisms of OER probed by DFT calculation andin situcharacterization techniques are also discussed.

Язык: Английский

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Metal oxide-based materials as an emerging family of hydrogen evolution electrocatalysts

Energy & Environmental Science, Год журнала: 2020, Номер 13(10), С. 3361 - 3392

Опубликована: Янв. 1, 2020

Metal oxide-based materials are emerging as a promising family of hydrogen evolution reaction (HER) electrocatalysts.

Язык: Английский

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Heterogeneous Bimetallic Phosphide Ni₂P‐Fe₂P as an Efficient Bifunctional Catalyst for Water/Seawater Splitting

Advanced Functional Materials, Год журнала: 2020, Номер 31(1)

Опубликована: Сен. 28, 2020

Abstract Developing high‐performance and cost‐effective bifunctional electrocatalysts for large‐scale water electrolysis is desirable but remains a significant challenge. Most existing nano‐ micro‐structured require complex synthetic procedures, making scale‐up highly challenging. Here, heterogeneous Ni 2 P‐Fe P microsheet synthesized by directly soaking foam in hydrochloric acid an iron nitrate solution, followed phosphidation. Benefiting from high intrinsic activity, abundant active sites, superior transfer coefficient, this self‐supported electrocatalyst shows superb catalytic activity toward overall splitting, requiring low voltages of 1.682 1.865 V to attain current densities 100 500 mA cm −2 1 m KOH, respectively. Such performance the benchmark IrO || Pt/C pair also places among best catalysts reported thus far. Furthermore, its enhanced corrosion resistance hydrophilic surface make it suitable seawater splitting. It able achieve KOH at 1.811 2.004 V, respectively, which, together with robust durability, demonstrates great potential realistic electrolysis. This work presents general economic approach fabrication metallic phosphide water/seawater electrocatalysis.

Язык: Английский

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Recent advances in transition-metal-sulfide-based bifunctional electrocatalysts for overall water splitting

Journal of Materials Chemistry A, Год журнала: 2021, Номер 9(9), С. 5320 - 5363

Опубликована: Янв. 1, 2021

This review summarizes recent advances relating to transition metal sulfide (TMS)-based bifunctional electrocatalysts, providing guidelines for the design and fabrication of TMS-based catalysts practical application in water electrolysis.

Язык: Английский

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Oxygen Evolution Reaction in Alkaline Environment: Material Challenges and Solutions

Advanced Functional Materials, Год журнала: 2022, Номер 32(21)

Опубликована: Март 13, 2022

Abstract The oxygen evolution reaction (OER) generally exists in electrochemistry‐enabled applications that are coupled with cathodic reactions like hydrogen evolution, carbon dioxide reduction, ammonia synthesis, and electrocatalytic hydrogenation. OER heavily impacts the overall energy efficiency of these devices because sluggish kinetics result a huge overpotential, thus, large amount efficient catalysts needed. benchmark iridium ruthenium (Ir/Ru)‐based materials (mostly used acid media) are, however, significantly limited by their scarcity. Non‐precious metal‐based (NPMCs) have emerged as most promising alternatives; they tend to degrade quickly under harsh operating conditions typical devices. Another challenge is unsatisfying performance when integrated real‐world Herein, active sites for three mainstream types NPMCs including non‐precious transition metal oxides/(oxy)hydroxides, metal‐free materials, hybrid composites reviewed. In addition, possible degradation mechanisms mitigation strategies discussed detail. This review also provides insights into gaps between R&D practical

Язык: Английский

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Designing MOF Nanoarchitectures for Electrochemical Water Splitting

Advanced Materials, Год журнала: 2021, Номер 33(17)

Опубликована: Март 22, 2021

Abstract Electrochemical water splitting has attracted significant attention as a key pathway for the development of renewable energy systems. Fabricating efficient electrocatalysts these processes is intensely desired to reduce their overpotentials and facilitate practical applications. Recently, metal–organic framework (MOF) nanoarchitectures featuring ultrahigh surface areas, tunable nanostructures, excellent porosities have emerged promising materials highly active catalysts electrochemical splitting. Herein, most pivotal advances in recent research on engineering MOF are presented. First, design catalytic centers MOF‐based/derived summarized compared from aspects chemical composition optimization structural functionalization at atomic molecular levels. Subsequently, fast‐growing breakthroughs activities, identification sites, fundamental mechanisms thoroughly discussed. Finally, comprehensive commentary current primary challenges future perspectives its commercialization hydrogen production provided. Hereby, new insights into synthetic principles electrocatalysis designing utilization offered, thus further promoting prosperity wide range

Язык: Английский

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Doping regulation in transition metal compounds for electrocatalysis

Chemical Society Reviews, Год журнала: 2021, Номер 50(17), С. 9817 - 9844

Опубликована: Янв. 1, 2021

This review summarizes the recent progress related to field of doping regulation in transition metal compounds, aiming give an overview this strategy for designing high-performance catalysts towards electrocatalytic applications.

Язык: Английский

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Dopants fixation of Ruthenium for boosting acidic oxygen evolution stability and activity

Nature Communications, Год журнала: 2020, Номер 11(1)

Опубликована: Окт. 23, 2020

Designing highly durable and active electrocatalysts applied in polymer electrolyte membrane (PEM) electrolyzer for the oxygen evolution reaction remains a grand challenge due to high dissolution of catalysts acidic electrolyte. Hindering formation vacancies by tuning electronic structure improve durability activity was theoretically effective but rarely reported. Herein we demonstrated rationally RuO2 with introducing W Er, which significantly increased vacancy energy. The representative W0.2Er0.1Ru0.7O2-δ required super-low overpotential 168 mV (10 mA cm-2) accompanied record stability 500 h More remarkably, it could operate steadily 120 (100 PEM device. Density functional theory calculations revealed co-doping Er tuned charge redistribution, prohibited soluble Rux>4 lowered adsorption energies intermediates.

Язык: Английский

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Powering the Future: How Can Electrochemistry Make a Difference in Organic Synthesis?

Chem, Год журнала: 2020, Номер 6(10), С. 2484 - 2496

Опубликована: Сен. 24, 2020

Язык: Английский

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Comprehensive Understanding of the Thriving Ambient Electrochemical Nitrogen Reduction Reaction

Advanced Materials, Год журнала: 2021, Номер 33(33)

Опубликована: Июль 1, 2021

Abstract The electrochemical method of combining N 2 and H O to produce ammonia (i.e., the nitrogen reduction reaction [E‐NRR]) continues draw attention as it is both environmentally friendly well suited for a progressively distributed farm economy. Despite multitude recent works on E‐NRR, further progress in this field faces bottleneck. On one hand, despite extensive exploration trial‐and‐error evaluation E‐NRR catalysts, no study has stood out become stage protagonist. other current level production (microgram‐scale) an almost insurmountable obstacle its qualitative quantitative determination, hindering discrimination between true activity contamination. Herein i) popular theory mechanism NRR are introduced; ii) comprehensive summary related catalysts provided; iii) operational procedures addressed, including acquisition key metrics, challenges faced, most suitable solutions; iv) guiding principles standardized recommendations emphasized future research directions prospects provided.

Язык: Английский

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