title: A Strategy to Promote the Electrocatalytic Activity of Spinels for Oxygen Reduction by Structure Reversal.
abstract: The electrocatalytic performance of a spinel for the oxygen reduction reaction (ORR) can be significantly promoted by reversing its crystalline structure from the normal to the inverse. As the spinel structure reversed, the activation and cleavage of O-O bonds are accelerated owing to a dissimilarity effect of the distinct metal atoms co-occupying octahedral sites. The Co(II)Fe(III)Co(III)O4 spinel with the Fe and Co co-occupying inverse structure exhibits an excellent ORR activity, which even exceeds that of the state-of-the-art commercial Pt/C by 42 mV in alkaline medium.
authors.affiliation: Chongqing Key Laboratory of Chemical Process for Clean Energy and Resource Utilization, School of Chemistry and Chemical Engineering, Chongqing University, Shapingba 174, Chongqing, China.
authors.forename: Guangping
authors.initials: G
authors.lastname: Wu
authors.affiliation: Chongqing Key Laboratory of Chemical Process for Clean Energy and Resource Utilization, School of Chemistry and Chemical Engineering, Chongqing University, Shapingba 174, Chongqing, China.
authors.forename: Jun
authors.initials: J
authors.lastname: Wang
authors.affiliation: Chongqing Key Laboratory of Chemical Process for Clean Energy and Resource Utilization, School of Chemistry and Chemical Engineering, Chongqing University, Shapingba 174, Chongqing, China. dingwei128@cqu.edu.cn.
authors.forename: Wei
authors.initials: W
authors.lastname: Ding
authors.affiliation: Chongqing Key Laboratory of Chemical Process for Clean Energy and Resource Utilization, School of Chemistry and Chemical Engineering, Chongqing University, Shapingba 174, Chongqing, China.
authors.forename: Yao
authors.initials: Y
authors.lastname: Nie
authors.affiliation: Chongqing Key Laboratory of Chemical Process for Clean Energy and Resource Utilization, School of Chemistry and Chemical Engineering, Chongqing University, Shapingba 174, Chongqing, China. liliracial@cqu.edu.cn.
authors.forename: Li
authors.initials: L
authors.lastname: Li
authors.affiliation: Chongqing Key Laboratory of Chemical Process for Clean Energy and Resource Utilization, School of Chemistry and Chemical Engineering, Chongqing University, Shapingba 174, Chongqing, China.
authors.forename: Xueqiang
authors.initials: X
authors.lastname: Qi
authors.affiliation: Chongqing Key Laboratory of Chemical Process for Clean Energy and Resource Utilization, School of Chemistry and Chemical Engineering, Chongqing University, Shapingba 174, Chongqing, China.
authors.forename: Siguo
authors.initials: S
authors.lastname: Chen
authors.affiliation: Chongqing Key Laboratory of Chemical Process for Clean Energy and Resource Utilization, School of Chemistry and Chemical Engineering, Chongqing University, Shapingba 174, Chongqing, China. zdwei@cqu.edu.cn.
authors.forename: Zidong
authors.identifier: http://orcid.org/0000-0001-8001-9729
authors.initials: Z
authors.lastname: Wei
keywords: dissimilarity effect; electrocatalysis; inverse spinels; oxygen reduction reaction