因氣候問題使再生能源存儲和轉換裝置研究日益蓬勃，氧析出反應 (OER) 以及氧還原反應 (ORR) 的雙功能活性觸媒為這些裝置的關鍵反應。雖然商業上有 RuO2、 IrO2 、 Pt/C 等催化劑存在，然而這些催化劑因貴金屬的稀缺性和昂貴價格，使其在實際應用有困難及限制，因此合成出相對的替代材料越顯重要。在所有材料中，過渡金屬的化合物因含量及相對便宜受大家矚目，在這些化合物中鈣鈦礦氧化物以特殊的物性化性、結構的靈活度成為候選材料之一。
高熵材料因其獨特且優異的表現應用在各領域中，另外陰離子(異原子)摻雜近來在催化領域也成為一個興盛的手段。在本次研究，首度結合高熵概念與陰離子摻雜在鈣鈦礦氧化物中，在最佳化P摻雜後或最佳化S摻雜後的鑭鍶高熵鈣鈦礦氧化物，表現出優異的雙功能活性ΔE分別為0.898 V和0.899 V，另外也表現出更好的循環穩定性相對於商業用催化劑，得益於高熵帶來豐富的氧化還原對和結構穩定，加上陰離子摻雜的電子結構調節。此實驗研究不但為高熵氧化物與陰離子(P或S)的摻雜提供見解與討論，也促進高熵概念與其他化學工程方法的結合。

A new strategy for the high entropy system used in electrocatalysts is anion doping. In this research, phosphorus and sulfur systematically doped into high entropy perovskite were studied for the bifunctionality of OER and ORR. Among them, LS5M-15P and LS5M-3S demonstrate the proper OER catalytic performance as well as OER activity. This is benefitted from the synergetic effect of redox couples of Fe and Co. Furthermore, LS5M-15P and LS5M-3S are tested in O2-saturated 0.1 M KOH, exhibiting the smallest ΔE (E10-E1/2) of 898 and 899 mV and outstanding stability. This work gives an amazing thought for high entropy system used in catalysts.

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