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Innovative Strategies for Overall Water Splitting Using Nanostructured Transition Metal Electrocatalysts

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Abstract

Electrochemical water splitting is regarded as the most auspicious technology for renewable sources, transport, and storage of hydrogen energy. Currently, noble Pt metal and noble-metal oxides (IrO2 and RuO2) are recognized as state-of-the-art electrocatalysts for both the hydrogen evolution reaction (HER) and oxygen evolution reaction (OER), respectively. Searching for earth-abundant electrocatalysts for the HER and OER with remarkable performance and high stability to replace precious metals plays a significant role in the commercial application of electrochemical water splitting. In this review, recent advancements in nanostructured transition metal electrocatalysts are assessed through the selected examples of nitrides, carbides, phosphides, sulfides, borides, layered double hydroxides, and oxides. Recent breakthroughs in nanostructured transition metal electrocatalysts are discussed in terms of their mechanisms, controllable production, structural design, and innovative strategies for boosting their performance. For instance, most nanostructured transition metal electrocatalysts for overall water splitting (OWS) only function well in neutral and alkaline solutions. Finally, current research challenges and future perspectives for increasing the performance of nanostructured transition metals for OWS are proposed.

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Acknowledgements

This work was supported by the Guangxi Science and Technology Project (AA17204083, AB16380030), the link project of the National Natural Science Foundation of China and Fujian Province (U1705252), and the Natural Science Foundation of Guangdong Province (2015A030312007).

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  1. Collaborative Innovation Center of Sustainable Energy Materials, Guangxi Key Laboratory of Electrochemical Energy Materials, State Key Laboratory of Processing for Non-Ferrous Metal and Featured Materials, Guangxi University, Nanning, 530004, PR China

    Asad Ali & Pei Kang Shen

  2. Guilin University of Technology, Guilin, 541004, China

    Fei Long

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  1. Asad Ali
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Ali, A., Long, F. & Shen, P.K. Innovative Strategies for Overall Water Splitting Using Nanostructured Transition Metal Electrocatalysts. Electrochem. Energy Rev. 5, 1 (2022). https://doi.org/10.1007/s41918-022-00136-8

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