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| Progress in the application of high-entropy alloys and high-entropy ceramics in water electrolysis |
| Author Name | Affiliation | E-mail | | PENG Kai | School of Materials Science and Engineering, Southeast University, Nanjing 211189, China | | | ZHAO Xinyi | School of Materials Science and Engineering, Southeast University, Nanjing 211189, China | | | CHEN Zixi | School of Materials Science and Engineering, Southeast University, Nanjing 211189, China | | | ZHANG Xuhai | School of Materials Science and Engineering, Southeast University, Nanjing 211189, China | zhangxuhai@seu.edu.cn | | ZENG Yuqiao | School of Materials Science and Engineering, Southeast University, Nanjing 211189, China | zyuqiao@seu.edu.cn | | JIANG Jianqing | School of Materials Science and Engineering, Southeast University, Nanjing 211189, China
College of Mechanical and Electronic Engineering, Nanjing Forestry University, Nanjing 210037, China | |
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| Abstract: Water splitting is suffering from low energy transformation efficiency due to the slow kinetics of the hydrogen evolution reaction (HER) and oxygen evolution reaction (OER), posing a significant barrier to the broad application of green hydrogen. Developing catalysts with excellent catalytic performance and low cost is crucial for overcoming the energy transformation issue. Recently, high-entropy materials have attracted considerable attention in various fields owing to their superior physical and chemical properties. High mixing entropy not only introduces significant lattice distortion in metals and ceramics but also provides them with sluggish diffusion and"cocktail effects", enabling the development of novel catalysts with outstanding catalytic performance. High-entropy materials thereby become one of the ideal catalysts for water splitting to lower the energy consumption on both the HER and OER electrodes. This article reviews the recent development of high-entropy alloys (HEAs) and high-entropy ceramics (HECs) in the field of water splitting. We first introduce the composition and structure design strategies for HEA and HEC catalysts based on the mechanism of water splitting, and then summarize the main HEA and HEC systems that display improved catalytic performance towards HER and OER. The synthesis methods for HEA and HEC catalysts are also introduced, and their advantages and disadvantages are evaluated. Finally, we provide an outlook on the challenges and prospects of the future development and application of HEAs and HECs for water splitting. |
| Keywords: high-entropy alloy high-entropy ceramic water splitting hydrogen evolution reaction oxygen evolution reaction |
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| PENG Kai,ZHAO Xinyi,CHEN Zixi,ZHANG Xuhai,ZENG Yuqiao,JIANG Jianqing.Progress in the application of high-entropy alloys and high-entropy ceramics in water electrolysis[J].Chinese Journal of Inorganic Chemistry,2025,41(7):1257-1275. |
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