Bifunctional Electrocatalysts for Overall and Hybrid Water Splitting

Chemical Reviews, Journal Year: 2024, Volume and Issue: 124(7), P. 3694 - 3812

Published: March 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

Language: Английский

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Designing a Built-In Electric Field for Efficient Energy Electrocatalysis

ACS Nano, Journal Year: 2022, Volume and Issue: 16(12), P. 19959 - 19979

Published: Dec. 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.

Language: Английский

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High-efficiency overall alkaline seawater splitting: using a nickel–iron sulfide nanosheet array as a bifunctional electrocatalyst

Journal of Materials Chemistry A, Journal Year: 2022, Volume and Issue: 11(3), P. 1116 - 1122

Published: Dec. 22, 2022

NiFeS nanosheet array on Ni foam (NiFeS/NF) behaves as a superb bifunctional electrocatalyst for overall seawater splitting, attaining commercially demanded current density of 500 mA cm −2 at low cell voltage 1.85 V with robust stability.

Language: Английский

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Progress and Perspectives for Solar‐Driven Water Electrolysis to Produce Green Hydrogen

Advanced Energy Materials, Journal Year: 2023, Volume and Issue: 13(16)

Published: March 9, 2023

Abstract Solar‐driven water electrolysis has been considered to be a promising route produce green hydrogen, because the conventional system is not completely renewable as it requires power from nonrenewable fossil fuel sources. This review emphasizes strategies for solar‐driven electrolysis, including construction of photovoltaic (PV)‐water electrolyzer systems, PV‐rechargeable energy storage device‐water systems with solar sole input energy, and photoelectrochemical splitting systems. The basic discussions above are first presented. Meanwhile, replacing oxygen evolution reaction electrooxidation organic compounds can effectively improve efficiency splitting. Also, seawater greatly broadens practical applications due abundant reserves seawater. Recent years have witnessed great development in field electrolysis. recent research area subsequently reviewed. Finally, perspectives on existing challenges along some opportunities further provided.

Language: Английский

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Recent advances in interface engineering strategy for highly‐efficient electrocatalytic water splitting

InfoMat, Journal Year: 2022, Volume and Issue: 5(1)

Published: Oct. 13, 2022

Abstract The hydrogen energy generated by the electrocatalytic water splitting reaction has been established as a renewable and clean carrier with ultra‐high density, which can well make up for shortcomings of conventional sources, such geographical limitations, climatic dependence, wastage. Notably, introduction electrocatalysts enhance efficiency process to generate hydrogen. Particularly, heterostructure constructed coupling multiple components (or phases) have emerged most promising option due well‐known electronic synergistic effects. existing reviews on interface engineering electrocatalyst design mostly focus relationship between heterostructures specific reactions. However, comprehensive overview integration model building, directional synthesis, mechanism rarely reported. To this end, in review, development catalysts is systematically introduced from perspective classification, growth regulation performance based interfacial microenvironment (bonding, configuration, lattice strain, etc.), thereby offering useful insights construction models. Besides, combined current applications strategies, challenges future are discussed relevant solutions proposed. Overall, review serve theoretical reference mechanism, further promote production technologies low consumption high yield. image

Language: Английский

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Recent developments on iron and nickel-based transition metal nitrides for overall water splitting: A critical review

Coordination Chemistry Reviews, Journal Year: 2023, Volume and Issue: 480, P. 215029 - 215029

Published: Jan. 25, 2023

Language: Английский

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Electrocatalytic seawater splitting: Nice designs, advanced strategies, challenges and perspectives

Materials Today, Journal Year: 2023, Volume and Issue: 69, P. 193 - 235

Published: Sept. 19, 2023

Language: Английский

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Recent Advancements in Electrochemical Hydrogen Production via Hybrid Water Splitting

Advanced Materials, Journal Year: 2023, Volume and Issue: 36(4)

Published: Oct. 10, 2023

Abstract As one of the most promising approaches to producing high‐purity hydrogen (H 2 ), electrochemical water splitting powered by renewable energy sources such as solar, wind, and hydroelectric power has attracted considerable interest over past decade. However, electrolysis process is seriously hampered sluggish electrode reaction kinetics, especially four‐electron oxygen evolution at anode side, which induces a high overpotential. Currently, emerging hybrid strategy proposed integrating thermodynamically favorable electro–oxidation reactions with cathode, providing new opportunity for energy–efficient H2 production. To achieve highly efficient cost–effective toward large–scale practical H production, much work been continuously done exploit alternative anodic oxidation cutting–edge electrocatalysts. This review will focus on recent developments production coupled reactions, including choice substrates, investigation electrocatalytic materials, deep understanding underlying mechanisms. Finally, some insights into scientific challenges now standing in way future advancement technique are shared, hope inspiring further innovative efforts this rapidly growing field.

Language: Английский

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Superb All‐pH Hydrogen Evolution Performances Powered by Ultralow Pt‐Decorated Hierarchical Ni‐Mo Porous Microcolumns

Advanced Functional Materials, Journal Year: 2022, Volume and Issue: 33(4)

Published: Nov. 13, 2022

Abstract Achieving efficient and robust hydrogen evolution reaction (HER) electrocatalysts under all‐pH conditions is significant for clean production. Herein, an ultralow Pt‐decorated hierarchical Ni‐Mo porous hybrid, consisting of Ni 3 Mo N on MoO 2 microcolumns, developed HER with remarkable catalytic performances, owing to the structure, strong metal‐support interaction, along Pt nanoparticles multichannel nickel foam support. The superhydrophilic aerophilic surfaces favor mass transport during process. Consequently, Pt/Ni‐Mo‐N‐O microcolumns present activity durability low overpotentials 40.6, 101.1, 89.5 mV obtain 100 mA cm −2 in basic, neutral, acid media, respectively. Moreover, excellent performance alkaline seawater (40.4 mV@100 ) even suppresses most over‐reported catalysts. More importantly, two‐electrode cell, assembled NiMoO 4 as cathode anode, exhibits towards overall‐water electrolysis cell voltage 1.56 V@100 .

Language: Английский

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Plastic Waste Valorization by Leveraging Multidisciplinary Catalytic Technologies

ACS Catalysis, Journal Year: 2022, Volume and Issue: 12(15), P. 9307 - 9324

Published: July 18, 2022

Plastic waste triggers a series of concerns because its disruptive impact on the environment and ecosystem. From point view catalysis, however, end-of-life plastics can be seen as an untapped feedstock for preparation value-added products. Thus, development diversified catalytic approaches valorization is urgent. Previous reviews this field have systematically summarized progress made plastic reclamation. In review, we emphasize design processes by leveraging state-of-the-art technologies from other developed fields to derive valuable polymers, functional materials, chemicals plastics. The principles, mechanisms, opportunities chemical (thermo-, electro-, photocatalytic) well biocatalytic ones are discussed, which may provide more insights future processes. Finally, outlooks perspectives accelerate toward feasible economy discussed.

Language: Английский

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