CoP@SiO2nanoreactors: A core-shell structure for efficient electrocatalytic oxygen evolution reaction  

作　　者：Ling Jin Huan Pang 

机构地区：[1]School of Chemistry and Chemical Engineering,Yangzhou University,Yangzhou 225009,China

出　　处：《Chinese Chemical Letters》2020年第9期2300-2304,共5页中国化学快报（英文版）

基　　金：supported by the National Natural Science Foundation of China(Nos.U1904215,21671170 and 21673203);the Top-notch Academic Programs Project of Jiangsu Higher Education Institutions(TAPP);Program for New Century Excellent Talents of the University in China(No.NCET-13-0645);the Six Talent Plan(No.2015XCL-030);Qinglan Project of Jiangsu;Program for Colleges Natural Science Research in Jiangsu Province(No.18KJB150036);the Science and Technology Innovation Foster Foundation of Yangzhou University(No.2016CXJ010)。

摘　　要：Metallic phosphides as a crucial class of metal-like compounds show high electric conductivity and electrochemical properties.It is of significant benefit to understanding the relationship between the electrocatalytic performance and phosphating degree of precursors.In this work,using Co3O4@SiO2 as precursor,core-shell structured CoP@SiO2 nanoreactors with outstanding oxygen evolution reaction performance were synthesized through a facile calcination method.The electrocatalytic performance of CoP@SiO2 modified electrode that treated with 500 mg NaH2PO2 was greatly enhanced.The obtained product displays a low overpotential of 280 mV at a current density of 10 mA/cm2 and a Tafel value 89 mV/dec in alkaline conditions.The easy available CoP@SiO2 with outstanding catalytic performance and stability possesses huge potential in future electrochemical applications.

关 键 词：Core-shell structure PHOSPHATING NANOREACTORS Oxygen evolution reaction Silicon shell 

分 类 号：O643.36[理学—物理化学]