A high-entropy alloy Fe₁₀Co₁₀Ni₁₀Cr₁₀Mn₆₀ ribbon catalyst with a face-centered cubic structure was designed by using Co and Ni as the main catalytic elements and combining various co-catalytic elements, such as Fe, Mn, and Cr. Substantial element selective corrosion occurs during the acid solution corrosion process, which induces the exposure of many Co and Ni atoms, increases the specific surface area, and further results in the formation of many vacancies and dislocations. This unique structure generates a positive electron effect, that is the peaks of Ni_2p3/2 and Co_2p3/2 shift to lower binding energies, namely, approximately 1 eV for Ni and 0.8 eV for Co, indicating the Co and Ni enrich electrons. The catalyst shows an excellent catalytic performance for the hydrolysis of NaBH₄ after corrosion for 90 s, whose hydrogen production rate approaches 18.46 l/(m²·min). This work opens up a direction for the application of the macroscopic scale high-entropy alloy in the catalytic hydrogen field.

中文翻译：

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FeCoNiCrMn 高熵合金的位错驱动对 NaBH4 水解的高催化性能

高熵合金的Fe ₁₀钴₁₀镍₁₀铬₁₀的Mn ₆₀具有面心立方结构的带催化剂通过使用Co和Ni作为主要的催化元素和组合各种助催化元素，如铁，锰设计和铬。酸溶液腐蚀过程中发生大量元素选择性腐蚀，导致大量 Co 和 Ni 原子暴露，增加比表面积，进一步导致形成许多空位和位错。这种独特的结构会产生正电子效应，即 Ni _2p3/2和 Co _2p3/2的峰转移到较低的结合能，即 Ni 约为 1 eV，Co 约为 0.8 eV，表明 Co 和 Ni 富集电子。该催化剂在腐蚀90 s后对NaBH ₄的水解表现出优异的催化性能，其产氢速率接近18.46 l/(m ² ·min)。该工作为宏观尺度高熵合金在催化氢领域的应用开辟了方向。