International Journal of Hydrogen Energy, Vol.44, No.31, 16615-16623, 2019
N-doped cobalt disulfide decorated on carbon cloth as an efficient electrode for oxygen generation
Developing the cost-effective catalyst based on earth-abundant materials is a crucial demand for water oxidation. Doping heteroatom into catalysts is regarded as an effective strategy to regulate electronic configuration and improve the catalytic performance of water oxidation. In this work, N-doped CoS2 on carbon cloth is fabricated by one-step synthesis, in which thiourea acts as both sulfur and nitrogen sources. The N-doped cobalt disulfide shows superior catalytic activity for oxygen evolution, with a low over potential of 240 mV for 10 mA cm(-2), small Tafel slope (56 mV dec(-1)) and high turnover frequency due to the modification with electronic structure after incorporation of N atom. Moreover, the incorporation of N atom provides a distinctive perspective of doping other heteroatom into the material for modifying the electrochemical properties. (C) 2019 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.