文献类型：期刊文献

英文题名：Amorphization of LaCoO3 Perovskite Nanostructures for Efficient Oxygen Evolution

作者：Li, Zhiwang[1];Xie, Yusheng[1];Huang, Zixun[1];Su, Yanyan[1];Sun, Chuanlong[1];Fu, Jianghong[1];Wei, Hehe[2,3];Wu, Fengchi[4];Ou, Gang[1]

机构：[1]Jinan Univ, Coll Chem & Mat Sci, Guangzhou 511443, Peoples R China;[2]East China Univ Sci & Technol, Ctr Computat Chem, Key Lab Adv Mat, Shanghai 200237, Peoples R China;[3]East China Univ Sci & Technol, Res Inst Ind Catalysis, Shanghai 200237, Peoples R China;[4]Guangdong Polytech Normal Univ, Sch Innovat & Entrepreneurship, Guangzhou 510665, Peoples R China

年份：2022

卷号：5

期号：10

起止页码：14209

外文期刊名：ACS APPLIED NANO MATERIALS

收录：;EI(收录号：20224212896993);WOS:【SCI-EXPANDED(收录号:WOS:000865427900001)】；

基金：This study was supported by the Guangzhou Basic and Applied Basic Research Foundation (202102020432), Guangdong Basic and Applied Basic Research Foundation (2020A1515110739), Fundamental Research Funds for the Central Universities (21620319), Innovation Team Project in Guangdong Colleges and Universities (2021KCXTD009), and the Start-up Funding of Jinan University. F.W. acknowledges the support by Youth Talent Project of Educational Commission of Guangdong Province (2020KQNCX041) and National College Students' Innovation and Entrepreneurship Training Program (202010588019). H.W. acknowledges the support by National Natural Science Foundations of China (Grant No. 2210021178) and Shanghai Sailing Program (21YF1409400).

语种：英文

外文关键词：perovskite; LaCoO3; amorphization; electronic structure; oxygen evolution reaction

摘要：It has become a challenge to further enhance the electrocatalytic performance of perovskite oxides due to their limited active surface area. Herein, we propose a top-down strategy for the amorphization of crystalline LaCoO3 nanopowders with significantly enhanced specific surface area and electrocatalytic oxygen evolution reaction (OER) activity and durability, in which the overpotential at the current density of 10 mA cm-2 reduced from 405 to 293 mV, and the Tafel slope decreased from 96.6 to 63.4 mV dec-1. This work provides an effective method for the property optimization of nanometer perovskite oxides and the design of high-performance electrocatalysts.