Rational design of integrated electrodes for advancing high-rate alkaline electrolytic hydrogen production

Dong, Zihao; Jiang, Zhe; Tang, Tang; Yao, Ze-Cheng; Xue, Dongping; Niu, Shuai; Zhang, Jianan; Hu, Jin‐Song

doi:10.1039/d2ta02374a

Cited by 17 publications

(17 citation statements)

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“…Hence, developing highly active catalysts is the key factor in the practical applications of the above energy-saving strategy to generate hydrogen energy. [38][39][40][41] Among the studied electrocatalysts, transition metal phosphides (TMPs), particularly Ni-based metal phosphides, have been investigated for the HER, OER, and UOR with excellent catalytic performance and stability, due to their excellent electrical conductivity, abundant active sites, and adjustable metalto-P stoichiometry ratios. 42,43 Nevertheless, the electrocatalytic performances of TMPs still fall behind those of noble metals, such as Pt/C, Rh and Ru.…”

Section: Introductionmentioning

confidence: 99%

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In situ phase-reconfiguration to synthesize Ru, B co-doped nickel phosphide for energy-efficient hydrogen generation in alkaline electrolytes

et al. 2022

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Section: Introductionmentioning

confidence: 99%

“…Hence, developing highly active catalysts is the key factor in the practical applications of the above energy-saving strategy to generate hydrogen energy. 38–41…”

Section: Introductionmentioning

confidence: 99%

In situ phase-reconfiguration to synthesize Ru, B co-doped nickel phosphide for energy-efficient hydrogen generation in alkaline electrolytes

et al. 2022

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“…[5][6][7] In this regard, coupling anode-replacing reactions with hydrogen production is a unique route to advancing water splitting and energy-conversion applications. 8 It should be noted that the electrocatalyst and membrane are the most critical components in water electrolyzers. Among the electrocatalysts reported, cobalt-nickel (Co-Ni)-based materials with a low cost and attractive electrocatalytic activity have emerged as promising OER catalysts in the past decade.…”

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confidence: 99%

“…5–7 In this regard, coupling anode-replacing reactions with hydrogen production is a unique route to advancing water splitting and energy-conversion applications. 8…”

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Surface valence regulation of cobalt–nickel foams for glucose oxidation-assisted water electrolysis

Wang

Wei²,

et al. 2023

Chem. Commun.

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“…。因此，可以对低成本的AEM电解槽进行制造，并有助于发展稳定的产氢能力，增加耐久性，并提高固定式、便携式和运输式发电系统的能源效率 16,17 20 。实验结果表明，大多数电催化剂在碱性介质(pH = 13)中的HER活性比在酸性介质(pH = 1)中低2-3个数量级 21,22 公式(7-10)是假设AEM涉及四个连续的质子-电子转移步骤，发生在单金属活性位点(M)上 53,57 : 58 。因此，催化剂表面释放、交换、氧化晶格氧配体是提供 OER循环的必要条件 59 。一旦晶格氧引入循环， OH/H 2 O物种将结合在氧空位位点，作为新的"晶格氧"进入下一个循环。因此，晶格氧激活是LOM 途径能够成功触发的先决条件 60,61 体对垒所带来的高过电势屏障，而且通过优化氧空位的数量，能够有效促进晶格氧机制的进行。同样地，Wang等 84…”

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Recent Advances and Future Prospects on Industrial Catalysts for Green Hydrogen Production in Alkaline Media

Xu¹,

Wu²,

Lu³

et al. 2022

Acta Physico Chimica Sinica

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Green hydrogen is obtained by electrochemical water splitting using electricity converted from renewable energy sources. When green hydrogen undergoes combustion, it produces only water, leading to zero CO2 emissions from the source, which is important for the global energy transition. The sluggish kinetics of the hydrogen evolution reaction (HER)/oxygen evolution reaction (OER) in alkaline media have hindered an enhancement in hydrogen production from electrochemical water splitting. A detailed understanding of the alkaline reaction kinetics is important to accomplish the global mission of carbon neutrality. This review presents the theoretical kinetics for the HER and OER in alkaline media using different designed electrocatalysts, and discusses their corresponding reaction mechanisms. Subsequently, current design concepts and generalities on catalysts for water electrolysis are discussed. Enhancements in the OER activity for alkaline water electrolysis can be achieved through strategies that are classified into two major categories. In the first category, the exposure of numerous active sites is achieved by engineering the morphology and obtaining a high surface area. In the second category, the intrinsic activity of the catalyst toward the OER is enhanced by heteroatomic participation, vacancy formation, and the use of heterogeneous media. Advanced characterization techniques and in-situ testing techniques have confirmed the presence of complex oxidation media for the OER, which have a significant impact on the catalyst structure and local coordination. Research on the active sites of the catalyst, high concentrations of active species, and the design of highly efficient reaction media is required to further drive catalyst development for the OER. The evaluation of electrocatalysts exhibiting high performance at high current densities to produce green hydrogen is crucial for their implementation in industrial applications. Currently, large-scale synthesis a key technology to obtain industrial electrodes. Meanwhile, the construction of superaerophobic electrodes and threedimensional electrodes facilitates the design of high-performance industrial catalytic electrodes. Subsequently, three different electrolytic cells that are typically used to obtain green hydrogen at the industrial scale are presented. The limitations to the design of electrolytic cells and the related solutions are also discussed. In-depth investigations on the design of either industrial electrocatalysts, commercial membranes, or electrolyzers can improve the understanding of industrial design principles to be applied to obtain industrial electrolyzers with increased efficiency, safety, and practicality. Finally, recent developments on electrocatalysts for water splitting and their limitations for industrial applications are presented to provide new perspectives and guidelines on the preparation of next-generation electrolytic catalysts.

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Rational design of integrated electrodes for advancing high-rate alkaline electrolytic hydrogen production

Abstract: The goal of global carbon peak and neutrality calls for the green production of hydrogen via water electrolysis powered by renewables. Alkaline electrolysis cells (AEC) are receiving more attention since...

Cited by 17 publications

References 148 publications

In situ phase-reconfiguration to synthesize Ru, B co-doped nickel phosphide for energy-efficient hydrogen generation in alkaline electrolytes

In situ phase-reconfiguration to synthesize Ru, B co-doped nickel phosphide for energy-efficient hydrogen generation in alkaline electrolytes

Surface valence regulation of cobalt–nickel foams for glucose oxidation-assisted water electrolysis

Recent Advances and Future Prospects on Industrial Catalysts for Green Hydrogen Production in Alkaline Media

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