In-situ tracking of phase conversion reaction induced metal/metal oxides for efficient oxygen evolution

作     者：Shahid Khan Chao Wang Haoliang Lu Yufeng Cao Zeyang Mao Chenglin Yan Xianfu Wang Shahid Khan;王超;陆豪量;曹宇锋;冒泽阳;晏成林;王显福

作者机构：Soochow Institute for Energy and Materials InnovationsCollege of EnergySoochow UniversitySuzhou215006China State Key Laboratory of Electronic Thin Films and Integrated DevicesUniversity of Electronic Science and Technology of ChinaChengdu610054China School of Chemical and Environmental EngineeringCollege of ChemistryChemical Engineering and Material ScienceSoochow UniversitySuzhou215123China 

基　　金：the National Natural Science Foundation of China(21603157) Young Elite Scientists Sponsorship Program by CAST(2018QNRC001) the support of Suzhou Key Laboratory for Advanced Carbon Materials and Wearable Energy Technologies and Soochow University Analysis and Testing Center 

出 版 物：《Science China Materials》 (中国科学（材料科学（英文版）)

年 卷 期：2021年第64卷第2期

页      码：362-373页

摘      要：Due to the unique interface and electronic structure,metal/metal oxide composite electrocatalysts have been designed and exploited for electrocatalytic oxygen evolution reaction(OER)in alkaline ***,how to fabricate metal/metal oxides with abundant interfaces and well-dispersed metal phases is a challenge,and the synergistic effect between metal and metal oxides on boosting the electrocatalytic activities is still ***,by controlling the lithium-induced conversion reaction of metal oxides,metal/metal oxide composites with plentiful interfaces and excellent electrical interconnection are fabricated,which can enhance the active sites,and accelerate the mass transfer during the electrocatalytic *** a result,the electrocatalytic oxygen evolution activities of the as-fabricated metal/metal oxide composite catalysts including NiCo/NiCo2O4,NiMn/NiMn2O4 and CoMn/CoMn2O4 are greatly *** catalytic mechanism is also explored using the in-situ X-ray and Raman spectroscopic tracking to uncover the real active centers and the synergistic effect between the metal and metal oxides during water *** functional theory plus U(DFT+U)calculation confirms the metal in the composite can optimize the catalytic reaction path and reduce the reaction barrier,thus boosting the electrocatalytic kinetics.

主 题 词：in-situ tracking electrochemical conversion reaction metal/metal oxide interfaces electrocatalytic mechanism oxygen evolution 

学科分类：081705[081705] 08[工学] 0817[工学-轻工类] 080502[080502] 0805[工学-能源动力学] 

核心收录：

D　O　I：10.1007/s40843-020-1424-2

馆 藏 号：203982209...