Study on Electrochemical Oxygen Evolution Properties of Bimetallic Carbon Nan Sheets

Abstract:

Transition metal oxide doped two-dimensional materials, which combine the advantages of multiphase and homogeneous electrocatalysts, have attracted extensive attention in recent years. However, the electrocatalysts with single metal component can not further meet the requirements of catalytic performance. In this paper, a bimetallic organic complex, CuCo-MOF, was prepared from L-aspartic acid and copper ions and cobalt ions. The effects of temperature and metal ratio on the oxygen evolution properties of the prepared materials were investigated, and CN@CuO/Co₂O₃ nanosheets with excellent oxygen evolution electrochemical activity were optimized. The catalyst is a compound of CuO and Co₂O₃ nanoparticles doped into the carbon nitrogen matrix. A large number of homogeneous CuO and Co₂O₃ nanoparticles cooperate on the ultra-thin carbon nitrogen substrate with high conductivity, showing low initial oxygen evolution over potential and high catalytic current density. A current density of 10 mA cm^-2 can be only achieved at 1.54 V vs. RHE.

• Periodical: Key Engineering Materials (Volume 871)
• Pages: 306-311
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.871.306
• Online since: January 2021
• Authors: Qian Duan*
• Keywords: 2D Nanosheets, Electrocatalytic Oxygen Evolution, Metal Oxides, Metal-Organic Complex

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