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Updated: Sep 16, 2025
Synthesis of Metal Nanoparticles Supported on Carbon Nanotube with Doped Co and N Atoms and its Catalytic Applications in Hydrogen Production
Published on: December 6, 2021
High-performance Co-doped RuO2 nanoparticles for alkaline hydrogen evolution reaction
Zhe Liu1, Tao Zhou1, Jeonghoon Kim1
1Department of Chemical Engineering, College of Engineering, Integrated Engineering Major, Kyung Hee University, Yongin 17140, Korea. tkyu@khu.ac.kr.
Abstract:
The development of ultra-efficient and long-lasting electrocatalysts with activity comparable to or exceeding that of Pt for the alkaline hydrogen evolution reaction (HER) is highly desirable for renewable H2 production. In this study, we synthesized carbon-supported cobalt-doped RuO2 nanoparticles using a two-step method. Electrochemical tests revealed that the carbon-supported Ru oxides with optimal Co doping (RuCoC-2) achieved current densities of 10, 50, and 100 mA cm-2 at low overpotentials of 10, 40, and 66 mV, respectively, for the alkaline HER. Notably, RuCoC-2 exhibited excellent mass activity (1.28 A mg-1 Ru) and hydrogen productivity (0.71 H2 s-1) at -0.05 V which are several times higher than those of the benchmark Pt/C, surpassing most of the reported catalysts.
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