An industry-applicable hybrid electrode for large current density hydrogen evolution reaction

Gao, Denghe; Ren, Jianwei; Wang, Hui; Wang, Xuyun; Liu, Yong; Wang, Rongfang

doi:10.1016/j.jpowsour.2021.230635

Cited by 13 publications

(9 citation statements)

References 32 publications

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“…Moreover, the low-cost, high-efficient, and long-durable electrocatalysts that operated well at high current densities are strongly demanded by industry H 2 production. [229][230][231][232][233][234] Therefore, the high-throughput scalable preparation method should be developed. Based on this, Zhang et al synthesized high-performance and low-cost 2D MoS 2 -based HER electrocatalysts on CFM through a scalable top-down exfoliation method followed by a thermal treatment.…”

Section: Copper-based Substratesmentioning

confidence: 99%

Self-supported electrocatalysts for the hydrogen evolution reaction

Zhang

Shen

et al. 2023

Mater. Chem. Front.

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Section: Copper-based Substratesmentioning

confidence: 99%

Self-supported electrocatalysts for the hydrogen evolution reaction

Zhang

Shen

et al. 2023

Mater. Chem. Front.

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“…Modifying the macrostructure of the catalyst on the electrode, for instance, the structure of the multidimensional catalytic surface can effectively expose more active sites per unit mass to improve HER performance. [44,[150][151][152][153] Moreover, the multidimensional structure implies a closer interface between the electrode and the electrolyte, which shortens the ion diffusion path and facilitates the release of bubbles. [154,155] Recently, our group designed a multidimensionally hierarchical structure with 1D Co(OH) x NSs growing on 2D NiMoO x nanorods.…”

Section: Modification Of Electrode Surfacementioning

confidence: 99%

Rational Design of Hydrogen Evolution Reaction Electrocatalysts for Commercial Alkaline Water Electrolysis

Zhang

Ding³

et al. 2023

Small Structures

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With the further exploitation of renewable energy sources, electrochemical hydrogen evolution reaction (HER) is considered a key technology to solve environmental problems and achieve global carbon neutrality. Currently, alkaline water electrolyzers (AWEs) have been revitalized as a traditional electrolytic water production industry, yet they face great challenges in achieving new technological breakthroughs due to the catalytic properties of electrode materials. In alkaline media, besides the slow kinetics of oxygen evolution reaction, the sluggish HER needing water dissociation and the mass transfer problems at high current densities are among the major factors limiting the development of alkaline water electrolysis for industrial applications. Therefore, it is of great importance to design HER electrocatalysts with high activity and stability at high current densities (>500 mA cm−2) for industrial applications at the “Research and Development level” (R&D level). Herein, a brief overview of the development of AWEs at the industrial scale is presented, and some mainstream recognized catalysis mechanisms for HER in alkaline electrolytes are summarized. Based on the requirements of industrial application and theoretical guidance, the activation strategies of HER electrocatalysts are also summarized. This review will propose new insights into the future development of alkaline water electrolysis.

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“…High electrocatalyst performance and stability should also be similarly demonstrated at high current densities (>100 mA cm −2 ) to better reflect industrial water splitting requirements, which is one of the commonly observed issues hindering the adaptation of laboratory-derived water splitting technology in the industry. 3 Similarly, the substrates used to prepare AWS electrodes have several key requisites. Fundamentally, they are required to be electrically conductive and chemically robust against strong alkaline conditions during operation.…”

Section: ■ Introductionmentioning

confidence: 99%

“…Deriving storable hydrogen energy from molecular water splitting is viewed as a key measure in decarbonizing our energy generation. Research throughout the years has yielded various electrochemical and photoelectrochemical (PEC) systems that utilizes abundant water and solar resources in the latter to generate hydrogen energy via environmentally sustainable means. − Considerable attention has been given to using alkaline water splitting (AWS) systems in the industry due to its relative ease of scalability . Users of AWS systems also benefit from greater versatility of using cheaper earth-abundant materials as electrodes as they do not have to contend with potential corrosion of common metals usually associated with water splitting in acidic media …”

Section: Introductionmentioning

confidence: 99%

“…Given that the AWS cell performance hinges on the performance of both catalysts, OER catalyst development has become a key focus in water splitting research. High electrocatalyst performance and stability should also be similarly demonstrated at high current densities (>100 mA cm –2 ) to better reflect industrial water splitting requirements, which is one of the commonly observed issues hindering the adaptation of laboratory-derived water splitting technology in the industry …”

Section: Introductionmentioning

confidence: 99%

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Facile Substrate-Agnostic Preparation of High-Performance Regenerative Water Splitting (Photo)electrodes

et al. 2022

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To realize low-cost and sustainable hydrogen production, it is imperative to develop facile approaches to fabricate water splitting (photo)electrodes based on earth-abundant catalysts. In addition, cost benefits can be unlocked if the expended catalysts can be regenerated multiple times on the same substrate. Here, we demonstrate a substrate-agnostic method of depositing NiFe layered double hydroxide (LDH) catalyst via solution corrosion on diverse substrates as water splitting (photo)anodes. Across various substrates, the catalyst deposited electrodes exhibit consistent and sustained water splitting performance as well as possessing regenerative capabilities. Using this method, we also demonstrate a record performance for NiFe LDH/GaAs photoanode, whereby an applied bias photon-to-current efficiency of 11.7% is achieved with excellent photocurrent stability up to 100 h. This study also shows that NiFe LDH deposited by using this technique can sustain high current density operations in alkaline electrolyzer cells for the benefit of industrial water splitting applications. Using the method developed here in preparing low-cost (photo)electrodes on diverse substrate materials, we foresee excellent prospects for delivering high performance and stable water splitting activity for large-scale application.

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An industry-applicable hybrid electrode for large current density hydrogen evolution reaction

Cited by 13 publications

References 32 publications

Self-supported electrocatalysts for the hydrogen evolution reaction

Self-supported electrocatalysts for the hydrogen evolution reaction

Rational Design of Hydrogen Evolution Reaction Electrocatalysts for Commercial Alkaline Water Electrolysis

Facile Substrate-Agnostic Preparation of High-Performance Regenerative Water Splitting (Photo)electrodes

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