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Updated: Feb 20, 2026
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
An amorphous Co-carbonate-hydroxide nanowire array for efficient and durable oxygen evolution reaction in carbonate
Maowen Xie1, Lin Yang, Yuyao Ji
1College of Chemistry and Materials Science, Sichuan Normal University, Chengdu 610068, Sichuan, China. xiongxiaoli2000@163.com.
Abstract:
The development of earth-abundant catalysts toward high-efficient and durable oxygen evolution reaction (OER) electrocatalysis in the carbonate electrolyte is in great demand but remains a huge challenge. In this communication, we describe the development of a Co-carbonate-hydroxide nanowire array on nickel foam (CoCH/NF) via in situ electrochemical conversion of the Co(CO3)0.5(OH)·0.11H2O nanowire array. When utilized as a 3D catalyst electrode for the OER in 1.0 M KHCO3 (pH: 8.3), as-formed CoCH/NF demands overpotential of only 332 mV to drive a geometrical catalytic current density of 10 mA cm-2, with its catalytic activity being maintained for at least 130 h. Impressively, it also demonstrates a high turnover frequency value of 0.22 mol O2 s-1 at an overpotential of 500 mV.
