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A porous high-entropy alloy for high-efficient oxygen evolution reaction

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摘要

析氧反应(OER)在电解水制氢过程中起着至关重要的作用，急需一种高效、稳定、低成本的电催化剂。本文采用一种简单的选择性相溶解的方法，成功地制备了一种多孔的AlCoCrFeNi高熵合金(SPD-48 h)。SPD-48 h在1 mol·L-1 KOH碱性溶液中达到10 mA·cm-2的电流密度时具有260 mV的过电位和58.0 mV·dec-1的Tafel斜率。扫描电镜 (SEM)分析表明，经过10 h的计时电流测试后，微观结构没有变化，证实了SPD-48 h的优异稳定性。多孔高熵合金优异的电催化性能不仅取决于合金自身的性能，也可以归因于其物理上独特的多孔结构。这些发现显示SPD-48 h是有益OER的，因此，对制备高性能电催化剂的研究人员来说应该是有价值的。

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Acknowledgements

This work was financially supported by the National Natural Science Foundation of China (Nos. 51971047 and 52271022), the Project of Liaoning Province's “Rejuvenating Liaoning Talents Plan” (No. XLYC1907046), Dalian High-Level Talent Innovation Support Program (No. 2020RJ07), the State Key Lab of Advanced Metals and Materials (No. 2021-ZD10), the Joint Research Fund Liaoning-Shenyang National Laboratory for Materials Science (No. 2019JH3/30100032).

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  1. Wei Wang, Yun-Zhuo Lu and Xing Lu have contributed equally to this work.

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    Wei Wang, Yun-Zhuo Lu & Xing Lu

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Wang, W., Lu, YZ. & Lu, X. A porous high-entropy alloy for high-efficient oxygen evolution reaction. Rare Met. 42, 2174–2181 (2023). https://doi.org/10.1007/s12598-022-02255-z

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