Strategies and Perspectives to Catch the Missing Pieces in Energy‐Efficient Hydrogen Evolution Reaction in Alkaline Media

Angewandte Chemie International Edition, Год журнала: 2021, Номер 60(35), С. 18981 - 19006

Опубликована: Янв. 10, 2021

Transition metal hydroxides (M-OH) and their heterostructures (X|M-OH, where X can be a metal, oxide, chalcogenide, phosphide, etc.) have recently emerged as highly active electrocatalysts for hydrogen evolution reaction (HER) of alkaline water electrolysis. Lattice hydroxide anions in are primarily responsible observing such an enhanced HER activity alkali that facilitate dissociation assist the first step, adsorption. Unfortunately, poor electronic conductivity had been issue concern significantly lowered its activity. Interesting advancements were made when heterostructured materials with metallic or semiconducting phase found to overcome this pitfall. However, midst evolving chalcogenide phosphide based catalysts, significant developments field catalysed superiority unfortunately given negligible attention. This review, unlike others, begins question why is difficult will take reader through evaluation perspectives, trends metals HER, understanding how works on different interfaces, what must research directions near future, eventually summarizes inevitable energy-efficient HER.

Язык: Английский

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The Significance of Properly Reporting Turnover Frequency in Electrocatalysis Research

Angewandte Chemie International Edition, Год журнала: 2021, Номер 60(43), С. 23051 - 23067

Опубликована: Сен. 15, 2021

For decades, turnover frequency (TOF) has served as an accurate descriptor of the intrinsic activity a catalyst, including those in electrocatalytic reactions involving both fuel generation and consumption. Unfortunately, most recent reports this area, TOF is often not properly reported or at all, contrast to overpotentials benchmarking current density. The density significant determining apparent activity, but it affected by catalyst-centric parasitic reactions, electrolyte-centric competing capacitance. Luckily, calculated can precisely give free from these phenomena electrocatalysis. In Viewpoint we ask: 1) What makes commonly used markers unsuitable for determination? 2) How reflect activity? 3) Why still underused electrocatalysis? 4) methods are 5) essential more calculation TOF? Finally, significance normalizing Faradaic efficiency (FE) stressed our views on development universal analytical tools determine exact number active sites real surface area all kinds materials.

Язык: Английский

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Electrocatalysts for the hydrogen evolution reaction in alkaline and neutral media. A comparative review

Journal of Power Sources, Год журнала: 2021, Номер 493, С. 229708 - 229708

Опубликована: Март 9, 2021

With interest in renewable energy sources and the decarbonisation of industry rapidly accelerating, alkaline water electrolysis can now be regarded as a key technology enabling efficient conversion storage. Since an environment is suitable for vast range materials with satisfactory chemical stability under operating conditions, topic catalysts route could give rise to confusion community. Hence, focus this review on analysing current situation electrocatalysis hydrogen evolution reaction neutral environment, presenting main group studied, discussing their potential achieve industrial relevance. It addresses limitations common parameters used evaluating comparing catalytic activity selected catalysts. Furthermore, provides comprehensive comparison catalyst activities respect individual groups depending composition well most cations cation-based materials. For sake clarity, also presented graphical form. Finally, based literature data, fundamental material characteristics evaluated development new electrochemical splitting are proposed.

Язык: Английский

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Electrocatalysts for the oxygen evolution reaction in alkaline and neutral media. A comparative review

Journal of Power Sources, Год журнала: 2021, Номер 507, С. 230072 - 230072

Опубликована: Июнь 4, 2021

Hydrogen can be produced in a clean way from water by its electrochemical splitting. Water electrolysis consists of two half-reactions, which the oxygen evolution reaction (OER) is major source energy loss. In case alkaline electrolysis, spectrum materials that are stable under conditions OER significantly broader than an acidic route. This review compares systematically different classes based on reported overpotential at current density 10 mA cm−2. Plethora studies was gathered to accomplish this task and catalysts literature date summarized. addition, we have provided insight into catalyst activity descriptors allowing theoretical identification most active materials. order assist reader gaining better understanding complex subject, classified three main groups agreement with their chemical composition as transition metal oxides, phosphides selenides. Less frequently used separate group. Near-neutral or neutral pH considered well.

Язык: Английский

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Designing a smart heterojunction coupling of cobalt-iron layered double hydroxide on nickel selenide nanosheets for highly efficient overall water splitting kinetics

Applied Catalysis B Environment and Energy, Год журнала: 2022, Номер 308, С. 121221 - 121221

Опубликована: Фев. 15, 2022

Язык: Английский

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Layered Double Hydroxide-Derived Nanomaterials for Efficient Electrocatalytic Water Splitting: Recent Progress and Future Perspective

ACS Energy Letters, Год журнала: 2022, Номер 7(10), С. 3311 - 3328

Опубликована: Сен. 8, 2022

Layered double hydroxides (LDHs) have attracted intense interest in recent research and hold promise a vast range of applications. Because the layered structure diverse compositions, transition-metal-based LDHs are projected to function as active electrocatalysts for oxygen evolution reaction (OER) hydrogen (HER). Delamination LDH hexagonal platelet crystals nanometer level leads enhanced activity. However, several limitations, including collapse poor conductivity LDHs, impede their application electrochemical catalysis. Consequently, LDH-derived nanomaterials being employed high-performance overall water splitting. In this Review, we highlight progress development materials, bimetal oxides hydroxides, bimetallic nitrides/phosphides, sulfides/selenides, MOFs, remarkable Focus is placed on methodologies catalytic efficiency splitting, key problems, future perspectives.

Язык: Английский

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A Review of Transition Metal Boride, Carbide, Pnictide, and Chalcogenide Water Oxidation Electrocatalysts

Chemical Reviews, Год журнала: 2023, Номер 123(23), С. 12795 - 13208

Опубликована: Ноя. 15, 2023

Transition metal borides, carbides, pnictides, and chalcogenides (X-ides) have emerged as a class of materials for the oxygen evolution reaction (OER). Because their high earth abundance, electrical conductivity, OER performance, these electrocatalysts potential to enable practical application green energy conversion storage. Under potentials, X-ide demonstrate various degrees oxidation resistance due differences in chemical composition, crystal structure, morphology. Depending on oxidation, catalysts will fall into one three post-OER electrocatalyst categories: fully oxidized oxide/(oxy)hydroxide material, partially core@shell unoxidized material. In past ten years (from 2013 2022), over 890 peer-reviewed research papers focused electrocatalysts. Previous review provided limited conclusions omitted significance "catalytically active sites/species/phases" this review, comprehensive summary (i) experimental parameters (e.g., substrates, loading amounts, geometric overpotentials, Tafel slopes, etc.) (ii) electrochemical stability tests post-analyses publications from 2022 is provided. Both mono polyanion X-ides are discussed classified with respect material transformation during OER. Special analytical techniques employed study reconstruction also evaluated. Additionally, future challenges questions yet be answered each section. This aims provide researchers toolkit approach showcase necessary avenues investigation.

Язык: Английский

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Recent advances in Ni3S2-based electrocatalysts for oxygen evolution reaction

International Journal of Hydrogen Energy, Год журнала: 2021, Номер 46(79), С. 39146 - 39182

Опубликована: Окт. 19, 2021

Язык: Английский

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Engineering multiphasic MoSe2/NiSe heterostructure interfaces for superior hydrogen production electrocatalysis

Applied Catalysis B Environment and Energy, Год журнала: 2022, Номер 312, С. 121434 - 121434

Опубликована: Апрель 20, 2022

Язык: Английский

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Stabilization of ruthenium nanoparticles over NiV-LDH surface for enhanced electrochemical water splitting: an oxygen vacancy approach

Journal of Materials Chemistry A, Год журнала: 2022, Номер 10(7), С. 3618 - 3632

Опубликована: Янв. 1, 2022

Oxygen vacancy assisted stabilization of Ru@NiV-LDH was achieved via wet chemical methods. showed an excellent water splitting activity. DFT analysis confirmed the Ru NPs over LDH surface by 3.8 ± 0.5 eV adsorption energy.

Язык: Английский

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