Abstract Among the groups of excellent electrode materials reported, Ni-Fe based catalyst is a topic of significant current interest for electrochemical water splitting. Furthermore, hierarchical structures are widely used in heterogeneous catalysis in various catalytic processes. A novel hybrid of Mo-doped Ni3Fe/Ni3FeN nanocatalyst was designed by using a facile method in this study. The Mo-Ni3Fe/Ni3FeN catalyst exhibits an outstanding catalytic performance for oxygen evolution reaction, as indicated by an ultralow overpotential of 240 mV at 10 mA·cm−2 and a small Tafel slope of 47 mV·dec−1. This study provides an idea for the development of new eletrocatalysts with more electron transfer channels and higher electrocatalytic performance.

中文翻译：

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通过 Mo 掺杂对分层 Ni3Fe/Ni3FeN 催化剂中的相和电子结构进行双重调制以实现高效的析氧反应

摘要 在已报道的众多优秀电极材料中，Ni-Fe 基催化剂是目前电化学水分解的重要课题。此外，分级结构广泛用于各种催化过程中的多相催化。在这项研究中，通过使用一种简便的方法设计了一种新型的 Mo 掺杂 Ni3Fe/Ni3FeN 纳米催化剂的混合物。Mo-Ni3Fe/Ni3FeN 催化剂对析氧反应具有出色的催化性能，在 10 mA·cm-2 下具有 240 mV 的超低过电位和 47 mV·dec-1 的小塔菲尔斜率。该研究为开发具有更多电子转移通道和更高电催化性能的新型电催化剂提供了思路。