本研究將高熵氧化物作為陽極電催化劑應用於水裂解反應並且透過加入鐵提升催化劑活性與穩定性。目前許多研究發現將多金屬結合並參與至陽極產氧反應有助於提升水裂解活性，因此，將常見於高熵之金屬組合結合至產氧方面之應用，並且加入活性金屬鐵有助於提升高熵氧化物之電催化反應。Mg、Co、Ni與Cu為常用於高熵之金屬，彼此相互融合組成高熵系統，許多研究利用其穩定性應用於許多方面，其氧化物也是常見於使用在電化學方面。而鐵在電催化活性方面也常透過參雜於其他金屬中以達到提升催化活性。將鐵引入高熵化合物系統中在其他元素互相影響之下達到比單相活性催化物更加之活性，並且展現穩定性以及被活化之特性。
本研究將針對晶體結構、表面鍵結以及電化學應用之間關係進行探討。在分析結果與討論的部分透過X光繞射儀、場發掃描式電子顯微鏡、X光光電子光譜儀、恆電位儀，分析鐵基高熵氧化物之表面形貌、晶體結構、表面化學鍵結組成和電化學性質，同時也透過不同元素比例分析各種金屬在高熵中之貢獻，利用三極式電化學系統進行測量，評估其產氧活性。

In water splitting, water oxidation is the most important reaction to produce hydrogen fuel. We designed the high entropy oxide which combine with Mg, Fe, Co, Ni, and Cu and applied in OER. XRD reported that using the oxide electrocatalyst which is iron-based on combining four elements after low temperature heat treatment is spinel system. After comparing different elements conditions, we observed that iron-based system can perform higher activity than pioneering system (MgCoNiCuZn)O and more stable than single active element iron. X-ray photoelectron spectroscopy (XPS) results indicated that Cu could role structure character by increase oxygen vacancies especially in high entropy system. By exploring how each element function in high entropy system, we tuned the best iron concentration (40%Fe) to perform the best activity at overpotential 258 mV after activation and better stability.

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