Ma Haibin, Sun Changning, Wang Zhili, Jiang Qing
Automobile Materials, Ministry of Education, and School of Materials Science and Engineering, Jilin University, Changchun 130022, China.
Nanoscale. 2021 Oct 21;13(40):17022-17027. doi: 10.1039/d1nr05060e.
It is of great importance to develop efficient and low-cost oxygen evolution reaction (OER) electrocatalysts for electrochemical water splitting. Herein, S doped NiCoVO nanosheets grown on Ni-Foam (S-NiCoVO/NF) with a modified electronic structure have been prepared through a facile one-step hydrothermal method. The as-prepared S-NiCoVO/NF exhibits outstanding OER activity with low overpotentials of 248 mV and 289 mV to deliver current densities of 10 mA cm and 100 mA cm, respectively, and a small Tafel slope of 46.2 mV dec in 1.0 M KOH electrolyte. These values are much lower than those obtained for most of the recently reported non-noble metal-based electrocatalysts under similar experimental conditions. This study provides a simple approach to rational design of efficient and cost-effective OER electrocatalysts for practical application of electrochemical water splitting.
