Zhang Longsheng, Zhang Shouhan, Bai Jing, Ding Yidan, Ye Jinyu, Song Yuanhao, Debroye Elke, Fan Wei, Liu Tianxi
Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, China.
College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China.
Chem Commun (Camb). 2024 Jun 27;60(53):6821-6824. doi: 10.1039/d4cc01113a.
Developing high-performance iridium (Ir)-based catalysts with minimal precious Ir metal is a significant but challenging step towards the acidic oxygen evolution reaction (OER). Here, we report a high-performance OER catalyst with Ir nanoparticles on a polyimide support, where the polyimide support can effectively modulate the electronic structures of the Ir active sites for decreased thermodynamic barriers, but also enrich the local proton concentration near the Ir active sites, enhancing the OER rates.
开发具有最少贵金属铱（Ir）的高性能铱基催化剂是迈向酸性析氧反应（OER）的重要但具有挑战性的一步。在此，我们报道了一种在聚酰亚胺载体上负载铱纳米颗粒的高性能OER催化剂，其中聚酰亚胺载体不仅可以有效调节铱活性位点的电子结构以降低热力学能垒，还能富集铱活性位点附近的局部质子浓度，从而提高OER速率。
