【摘 要】
：
Cobalt oxides have been widely investigated as promising replacements for noble metal-based catalysts for oxygen evolution reaction (OER).Herein,we,for the first time,have obtained porous CoxOy nanosheets with N-doping and oxygen vacancies by etching Co3O
【机 构】
：
State Key Laboratory of Chem/Bio-Sensing and Chemometrics, College of Chemistry and Chemical Enginee
论文部分内容阅读
Cobalt oxides have been widely investigated as promising replacements for noble metal-based catalysts for oxygen evolution reaction (OER).Herein,we,for the first time,have obtained porous CoxOy nanosheets with N-doping and oxygen vacancies by etching Co3O4 nanosheets with NH3 plasma.Comparing with the pristine Co3O4 nanosheets (1.79V),the porous CoxOy nanosheets with N-doping and oxygen vacancies have a much lower potential of 1.51 V versus RHE to reach the current density of 10mA cm-2,The obtained sample has a lower Tafel slope of 68 mV dec-1 than the pristine Co3O4 nanosheets (234 mV dec-1).The disclosed Co2+,which is responsible for the formation of active sites (CoOOH),N-doping and oxygen vacancies,gives rise to better performance of OER.
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