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Updated: Sep 18, 2025

Photochemical Oxidative Growth of Iridium Oxide Nanoparticles on CdSe@CdS Nanorods
Published on: February 11, 2016
Iridium-free high-entropy ruthenium-based oxides with activated lattice oxygen towards high efficient and durable
Suoqing Yu1, Lei Li1, Chong Ma1
1Hebei Key Laboratory of Man-Machine Environment Thermal Control Technology and Equipment, Hebei Vocational University of Technology and Engineering, Hebei 054000, P. R. China. wangaobing@hevute.edu.cn.
Abstract:
Ruthenium-based oxides are promising high-activity acidic OER catalysts to replace IrO2 but suffer from poor stability. Here, we report an Ir-free high-entropy (RuCrMnFeNi)O2 electrocatalyst with exceptional activity (212 mV@10 mA cm-2) and stability (100 h) in 0.5 M H2SO4. In PEM electrolyzers, it operates stably for 300 h at 200 mA cm-2. 18O labeling confirms a lattice-oxygen-mediated mechanism.
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