Recent advances in activating surface reconstruction for the high-efficiency oxygen evolution reaction

Chemical Society Reviews, Год журнала: 2021, Номер 50(15), С. 8428 - 8469

Опубликована: Янв. 1, 2021

The recent progress in activating surface reconstruction by integrating advanced characterizations with theoretical calculations for high-efficiency oxygen evolution reaction is reviewed.

Язык: Английский

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Defect Chemistry in Heterogeneous Catalysis: Recognition, Understanding, and Utilization

ACS Catalysis, Год журнала: 2020, Номер 10(19), С. 11082 - 11098

Опубликована: Сен. 3, 2020

Heterogeneous catalysis plays an important role in modern industry. Exploring catalysts with high efficiency, low-cost, and stability is issue for the research of heterogeneous catalysis. In recent years, researchers have prepared a variety defective found that defects effect on their catalytic activity. However, relationship between activity remains to be clarified. this Review, three aspects including recognition, understanding, utilization defect chemistry been proposed. Based progress, work mainly introduces fundamental concept, types, characterization catalysts, significant effects properties, controllable construction methods efficient catalyst synthesis. Finally, conclusion outlook are presented. It hoped can provide guidance synthesis mechanism catalysts.

Язык: Английский

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Lattice oxygen redox chemistry in solid-state electrocatalysts for water oxidation

Energy & Environmental Science, Год журнала: 2021, Номер 14(9), С. 4647 - 4671

Опубликована: Янв. 1, 2021

Lattice oxygen redox chemistry in solid-state electrocatalysts rationalizes the remarkable OER activity by lattice oxygen-mediated mechanism. Here we elucidate fundamental principle of this mechanism and summarize recently related developments.

Язык: Английский

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Gas diffusion electrodes (GDEs) for electrochemical reduction of carbon dioxide, carbon monoxide, and dinitrogen to value-added products: a review

Energy & Environmental Science, Год журнала: 2021, Номер 14(4), С. 1959 - 2008

Опубликована: Янв. 1, 2021

Opportunities, challenges and design criteria associated with Gas diffusion electrodes (GDEs) for various electrochemical applications.

Язык: Английский

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Dynamic Behavior of Single-Atom Catalysts in Electrocatalysis: Identification of Cu-N₃ as an Active Site for the Oxygen Reduction Reaction

Journal of the American Chemical Society, Год журнала: 2021, Номер 143(36), С. 14530 - 14539

Опубликована: Авг. 31, 2021

Atomically dispersed M-N-C (M refers to transition metals) materials represent the most promising catalyst alternatives precious metal Pt for electrochemical reduction of oxygen (ORR), yet genuine active sites in remain elusive. Here, we develop a two-step approach fabricate Cu-N-C single-atom catalysts with uniform and well-defined Cu2+-N4 structure that exhibits comparable activity superior durability comparison Pt/C. By combining operando X-ray absorption spectroscopy theoretical calculations, unambiguously identify dynamic evolution Cu-N4 Cu-N3 further HO-Cu-N2 under ORR working conditions, which concurrently occurs Cu2+ Cu+ is driven by applied potential. The increase Cu+/Cu2+ ratio reduced potential indicates low-coordinated Cu+-N3 real site, supported DFT calculations showing lower free energy each elemental step on than Cu2+-N4. These findings provide new understanding electrochemistry may guide design more efficient low-cost catalysts.

Язык: Английский

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Atomic heterointerface engineering overcomes the activity limitation of electrocatalysts and promises highly-efficient alkaline water splitting

Energy & Environmental Science, Год журнала: 2021, Номер 14(10), С. 5228 - 5259

Опубликована: Янв. 1, 2021

This review summarizes the recent progress of atomic heterointerface engineering to overcome activity limitation electrocatalysts for water splitting and elaborates its electron effect ensemble effect, etc.

Язык: Английский

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NiCo-Based Electrocatalysts for the Alkaline Oxygen Evolution Reaction: A Review

ACS Catalysis, Год журнала: 2021, Номер 11(20), С. 12485 - 12509

Опубликована: Сен. 27, 2021

Electrocatalytic water splitting is a sustainable way to produce hydrogen energy, but the oxygen evolution reaction (OER) at anode has sluggish kinetics and low energy conversion efficiency, which major bottleneck for large-scale production. The design synthesis of robust low-cost OER catalysts are crucial OER. NiCo-based electrocatalysts have suitable atomic electronic structures, show high activity stability during process. Recently, significant progress been made in regulating structure composition understanding nature catalysis, especially mechanism, catalytic active sites, structure–activity relationship. In this work, we summarized discussed latest development OER, with particular emphasis on catalyst synthesis, strategies boosting performance, catalysis from experimental theoretical perspectives. some descriptors, relationships based unveiled. Finally, challenges futuristic outlooks improving performance proposed, hope review can provide guidance more efficient electrocatalysts.

Язык: Английский

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Roadmap and Direction toward High-Performance MoS₂ Hydrogen Evolution Catalysts

ACS Nano, Год журнала: 2021, Номер 15(7), С. 11014 - 11039

Опубликована: Июль 12, 2021

MoS2 intrinsically show Pt-like hydrogen evolution reaction (HER) performance. Pristine displayed low HER activity, which was caused by quantities of catalytic sites and unsatisfactory conductivity. Then, phase engineering S vacancy were developed as effective strategies to elevate the intrinsic Heterojunctions dopants successful improve performance significantly. A couple state-of-the-art catalysts showed comparable Pt. Applying multiple in same electrocatalyst key furnish In this review, we summarize available fabricate superior tag important works. We analyze well-defined for fabricating a electrocatalyst, propose complementary could help meet practical requirements, people design highly efficient electrocatalysts. also provide brief perspective on assembling electrochemical systems high-performance electrocatalysts, apply other electrocatalysis reactions, develop two-dimensional (2D) dichalcogenide not limited MoS2. This review will researchers obtain better understanding development providing directions next-generation catalyst development.

Язык: Английский

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Insight into Structural Evolution, Active Sites, and Stability of Heterogeneous Electrocatalysts

Angewandte Chemie International Edition, Год журнала: 2021, Номер 61(11)

Опубликована: Сен. 7, 2021

Studying structure-activity correlations of electrocatalysts is essential for improving the conversion electrical to chemical energy. Recently, increasing evidence obtained by operando characterization techniques reveal that structural evolution catalysts caused interplay with electric fields, electrolytes and reactants/intermediates brings about formation real active sites. Hence, it time summarize related research advances envisage future developments. In this Minireview, we first introduce fundamental concepts associated (e.g., catalysts, sites/centers stability/lifetime) their relevance. Then, multiple triggers advanced characterizations are discussed. Significantly, a brief overview its reversibility in heterogeneous electrocatalysis provided, especially representative electrocatalytic oxygen reaction (OER) CO2 reduction (CO2 RR) processes. Lastly, key challenges opportunities exciting field highlighted.

Язык: Английский

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Anion-exchange membrane water electrolyzers and fuel cells

Chemical Society Reviews, Год журнала: 2022, Номер 51(23), С. 9620 - 9693

Опубликована: Янв. 1, 2022

The key components, working management, and operating techniques of anion-exchange membrane water electrolyzers fuel cells are reviewed for the first time.

Язык: Английский

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