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Optimizing the Synergistic Effect of Co and Fe for Efficient and Durable Oxygen Evolution under Alkaline Conditions
ACS Applied Materials & Interfaces ( IF 8.3 ) Pub Date : 2024-06-27 , DOI: 10.1021/acsami.4c07058
Sanghwi Han 1 , Sungjun Kim 2 , Tae Hoon Kim 2 , Jang Yong Lee 2 , Jeyong Yoon 1
Affiliation  

Developing robust oxygen evolution reaction (OER) electrocatalysts is crucial for advancing anion exchange membrane water electrolysis (AEMWE). In this study, we present a catalyst optimizing the synergistic effect of Co and Fe by creating a CoFe-based layer on a Fe-based electrode (Fe@CoFe). The Fe@CoFe exhibits an overpotential of 168 mV at 10 mA cm–2 under half-cell conditions and a current density of 10 A cm–2 at 2 V in the AEMWE system with 1 M KOH. Moreover, it showcases a degradation rate of 76 μV h–1 for 2000 h at 500 mA cm–2 in the single-cell system. This study demonstrates the feasibility of achieving efficient and durable water electrolysis using a transition metal-based catalyst exclusively fabricated via electrodeposition.

中文翻译:


优化 Co 和 Fe 的协同效应,实现碱性条件下高效、持久的析氧



开发强大的析氧反应 (OER) 电催化剂对于推进阴离子交换膜水电解 (AEMWE) 至关重要。在这项研究中,我们提出了一种催化剂,通过在铁基电极上创建 CoFe 基层(Fe@CoFe)来优化 Co 和 Fe 的协同效应。 Fe@CoFe 在半电池条件下在 10 mA cm –2 下表现出 168 mV 的过电势,在具有 1 的 AEMWE 系统中在 2 V 下表现出 10 A cm –2 的电流密度。 M KOH。此外,它在单细胞系统中在 500 mA cm –2 下 2000 小时内表现出 76 μV h –1 的降解率。这项研究证明了使用专门通过电沉积制造的过渡金属基催化剂实现高效且持久的水电解的可行性。
更新日期:2024-06-27
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