Herein, we report an easily oxidized Co–Fe perovskite fluoride as an efficient catalyst for the oxygen evolution reaction (OER). In situ Raman spectroscopy showed that the presence of F promotes reconstruction to form highly active (Co³⁺Fe³⁺)OOH, and the current density of 10 mA cm⁻² can be achieved at the overpotential of only 118 mV in 1 M KOH aqueous solution. This work helps to understand the role of fluoride during the OER.

中文翻译：

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易于转化的钙钛矿氟化物 KCo1−xFexF3，可实现高效的析氧反应

在此，我们报道了一种易氧化的Co-Fe钙钛矿氟化物作为析氧反应（OER）的有效催化剂。原位拉曼光谱表明F的存在促进重构形成高活性的(Co ³⁺ Fe ³⁺ )OOH，并且在1 M KOH中仅118 mV的过电势即可实现10 mA cm ^-2的电流密度水溶液。这项工作有助于了解氟化物在 OER 过程中的作用。