Bifunctional Electrocatalysts for Overall and Hybrid Water Splitting

Chemical Reviews, Год журнала: 2024, Номер 124(7), С. 3694 - 3812

Опубликована: Март 22, 2024

Electrocatalytic water splitting driven by renewable electricity has been recognized as a promising approach for green hydrogen production. Different from conventional strategies in developing electrocatalysts the two half-reactions of (e.g., and oxygen evolution reactions, HER OER) separately, there growing interest designing bifunctional electrocatalysts, which are able to catalyze both OER. In addition, considering high overpotentials required OER while limited value produced oxygen, is another rapidly exploring alternative oxidation reactions replace hybrid toward energy-efficient generation. This Review begins with an introduction on fundamental aspects splitting, followed thorough discussion various physicochemical characterization techniques that frequently employed probing active sites, emphasis reconstruction during redox electrolysis. The design, synthesis, performance diverse based noble metals, nonprecious metal-free nanocarbons, overall acidic alkaline electrolytes, thoroughly summarized compared. Next, their application also presented, wherein anodic include sacrificing agents oxidation, pollutants oxidative degradation, organics upgrading. Finally, concise statement current challenges future opportunities presented hope guiding endeavors quest sustainable

Язык: Английский

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Designing a Built-In Electric Field for Efficient Energy Electrocatalysis

ACS Nano, Год журнала: 2022, Номер 16(12), С. 19959 - 19979

Опубликована: Дек. 15, 2022

To utilize intermittent renewable energy as well achieve the goals of peak carbon dioxide emissions and neutrality, various electrocatalytic devices have been developed. However, reactions, e.g., hydrogen evolution reaction/oxygen reaction in overall water splitting, polysulfide conversion lithium–sulfur batteries, formation/decomposition lithium peroxide lithium–oxygen nitrate reduction to degrade sewage, suffer from sluggish kinetics caused by multielectron transfer processes. Owing merits accelerated charge transport, optimized adsorption/desorption intermediates, raised conductivity, regulation microenvironment, ease combine with geometric characteristics, built-in electric field (BIEF) is expected overcome above problems. Here, we give a Review about very recent progress BIEF for efficient electrocatalysis. First, construction strategies characterization methods (qualitative quantitative analysis) are summarized. Then, up-to-date overviews engineering electrocatalysis, attention on electron structure optimization microenvironment modulation, analyzed discussed detail. In end, challenges perspectives proposed. This gives deep understanding design electrocatalysts next-generation storage devices.

Язык: Английский

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Dual-doping NiMoO4 with multi-channel structure enable urea-assisted energy-saving H2 production at large current density in alkaline seawater

Applied Catalysis B Environment and Energy, Год журнала: 2022, Номер 320, С. 121977 - 121977

Опубликована: Сен. 13, 2022

Язык: Английский

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Surface reconstruction and charge distribution enabling Ni/W5N4 Mott-Schottky heterojunction bifunctional electrocatalyst for efficient urea-assisted water electrolysis at a large current density

Applied Catalysis B Environment and Energy, Год журнала: 2022, Номер 323, С. 122168 - 122168

Опубликована: Ноя. 11, 2022

Язык: Английский

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Transition Metal‐Based Catalysts for Urea Oxidation Reaction (UOR): Catalyst Design Strategies, Applications, and Future Perspectives

Advanced Functional Materials, Год журнала: 2024, Номер 34(18)

Опубликована: Янв. 21, 2024

Abstract Urea oxidation reaction (UOR) has garnered significant attention in recent years as a promising and sustainable clean‐energy technology. Urea‐containing wastewater poses severe threats to the environment human health. Numerous studies hence focus on developing UOR viable process for simultaneously remediating converting it into energy. Moreover, UOR, which thermodynamic potential of 0.37 V (vs reversible hydrogen electrode, RHE), shows great promise replacing energy‐intensive oxygen evolution (OER; 1.23 vs RHE). The versatility stability urea, particularly at ambient temperatures, make an attractive alternative fuel cells. Since entails complex intermediate adsorption/desorption process, many are devoted designing cost‐effective efficient catalysts. Notably, transition metal‐based materials with regulated d orbitals have demonstrated process. However, comprehensive reviews focusing catalysts remain scarce. In light this, review aims bridge gap by offering in‐depth systematic overview cutting‐edge design strategies their diverse applications UOR. Additionally, delves status quo future directions, charting course further advancements this exciting field.

Язык: Английский

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Understanding the bifunctional catalytic ability of electrocatalysts for oxygen evolution reaction and urea oxidation Reaction: Recent advances and perspectives

Chemical Engineering Journal, Год журнала: 2023, Номер 471, С. 144660 - 144660

Опубликована: Июль 11, 2023

Язык: Английский

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Transition metal-based self-supported anode for electrocatalytic water splitting at a large current density

Coordination Chemistry Reviews, Год журнала: 2023, Номер 495, С. 215381 - 215381

Опубликована: Авг. 19, 2023

Язык: Английский

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Amorphous iron-doped nickel boride with facilitated structural reconstruction and dual active sites for efficient urea electrooxidation

Chemical Engineering Journal, Год журнала: 2023, Номер 465, С. 142684 - 142684

Опубликована: Март 29, 2023

Язык: Английский

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Built-in electric field in bifunctional electrocatalyst (Ni3S2@Ni9S8) for high-efficiency OER and overall water splitting performance

Materials Today Chemistry, Год журнала: 2023, Номер 34, С. 101758 - 101758

Опубликована: Окт. 6, 2023

Язык: Английский

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Tuning Morphology and Electronic Structure of Cobalt Metaphosphate Via Vanadium‐Doping for Efficient Water and Urea Splitting

Advanced Functional Materials, Год журнала: 2024, Номер 34(21)

Опубликована: Янв. 26, 2024

Abstract Designing efficient multifunctional electrocatalysts for water and urea splitting to produce green hydrogen presents a significant yet worthwhile challenge. Herein, the morphology electronic structure of cobalt metaphosphate (Co 2 P 4 O 12 ) by vanadium (V) doping, resulting in improved electrocatalytic activity stability evolution reaction (HER), oxygen (OER), oxidation (UOR) are simultaneously regulated. Theory calculations show that V‐doped Co (V‐Co can boost kinetics catalytic reactions optimizing d ‐band center atoms binding strength intermediates, as well enhancing density states. Moreover, doping V into crystalline benefits formation thicker amorphous layer during process, which could enhance its alkaline corrosion resistance stability. Additionally, multilevel nanostructures V‐Co provide rich active sites reactions. As result, two‐electrode electrolyzer assembled delivers low voltages overall splitting. The superior performance suggests proposed V‐doping strategy is promising way regulate catering applications.

Язык: Английский

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