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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
Amorphous Co2B Grown on CoSe2 Nanosheets as a Hybrid Catalyst for Efficient Overall Water Splitting in Alkaline
Yaxiao Guo1,2, Zhaoyang Yao3, Changshuai Shang1,2
1State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences , Changchun, Jilin 130022, China.
Abstract:
In this work, we synthesized a novel hybrid catalyst (Co2B/CoSe2) by growing amorphous Co2B on the surface of CoSe2 nanosheets. Benefiting from the prominent coupled effects between Co2B and CoSe2 nanosheets, an efficient oxygen evolution reaction catalyst Co2B/CoSe2 exhibits a very low overpotential of 320 mV @ 10 mA cm-2 with a Tafel slope of 56.0 mV dec-1 in alkaline medium. An overpotential of 300 mV can also be achieved by Co2B/CoSe2 at the same condition for hydrogen evolution reaction. Notably, at the applied potential of 1.73 V, the electrocatalyst Co2B/CoSe2 demonstrates a current density of 10 mA cm-2 for overall water splitting and displays an outstanding long-term stability. The faradaic efficiencies of Co2B/CoSe2 for both hydrogen and oxygen evolution are close to 100%.
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