High-entropy alloy (HEA) catalysts represent a promising frontier in catalysis research, offering enhanced catalytic efficiency due to their high elemental disorder, especially in water-splitting applications. The process of dealloying, which involves the selective removal of elements from an alloy, can produce a nanoporous structure and has shown potential in generating nanoporous ultra-HEAs containing up to 23 elements. This study emphasizes the development of acid-tolerant HEA catalysts through material-driven inverse analysis. By immersing an ultra-HEA containing 23 elements in acid and analyzing the remaining elements, an acid-tolerant HEA catalyst was developed. This catalyst, denoted as HEA8, contained eight elements (Au, Ir, Nb, Pt, Rh, Ru, Ta, and sacrificial Al). HEA8 demonstrated comparable catalytic activity and stability for both the hydrogen and oxygen evolution reactions under acidic conditions, outperforming commercial Pt and IrO₂ catalysts after successive modification.

中文翻译：

---

逆向分析指导开发耐酸纳米多孔高熵合金催化剂以增强分解水性能


高熵合金 （HEA） 催化剂代表了催化研究的一个有前途的前沿领域，由于其高元素无序性，特别是在分解水中，可提供更高的催化效率。脱合金过程涉及从合金中选择性去除元素，可以产生纳米多孔结构，并已显示出生成包含多达 23 种元素的纳米多孔超高熵合金的潜力。本研究强调通过材料驱动的逆向分析开发耐酸 HEA 催化剂。通过将含有 23 种元素的超高熵合金浸入酸中并分析剩余元素，开发了一种耐酸高熵合金催化剂。这种催化剂表示为 HEA8，包含八种元素（Au、Ir、Nb、Pt、Rh、Ru、Ta 和牺牲 Al）。HEA8 在酸性条件下对析氢和析氧反应表现出相当的催化活性和稳定性，在连续改性后优于市售 Pt 和 IrO₂ 催化剂。