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Superior Water Oxidation Performance over CoMoO 4 with High Stability: Synergistic Effect of Oxygen Vacancies and Morphology
Author(s) -
Fu Qiong,
Du Xiaoqiang
Publication year - 2020
Publication title -
chemistryselect
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 34
ISSN - 2365-6549
DOI - 10.1002/slct.202003561
Subject(s) - overpotential , materials science , bimetallic strip , oxygen , environmentally friendly , electrolysis , chemical engineering , oxygen evolution , electrode , chemistry , metallurgy , electrochemistry , metal , organic chemistry , ecology , electrolyte , biology , engineering
It is utmost significant to exploit environmentally friendly, low‐cost and robust electrocatalysts because of the slow kinetics involved in production of hydrogen through water electrolysis on a large scale. The bimetallic CoMoO 4 materials were in situ grown on Ni foam by simple hydrothermal synthesis method. The as‐prepared CoMoO 4 materials with oxygen vacancy display superior electrocatalytic performance compared to the pristine CoMoO 4 electrodes, demanding a small OER overpotential of 340 mV to obtain 40 mA cm −2 . The superior electrocatalytic performance of the CoMoO 4 material was ascribed to the presence of more oxygen deficiency, optimal water adsorption energy and more exposure to active sites. The work provides a novel thought and method for the exploitation of environmentally friendly, robust and low‐cost water splitting electrocatalysts.