Counter-ion insertion of chloride in Mn3O4 as cathode for dual-ion batteries: A new mechanism of electrosynthesis for reversible anion storage  

作　　者：Heng Jiang Xiulei Ji 

机构地区：[1]Department of Chemistry,Oregon State University,Corvallis,Oregon

出　　处：《Carbon Energy》2020年第3期437-442,共6页碳能源（英文）

基　　金：AID Grant of Oregon State University。

摘　　要：Irreversible reductive insertion of Zn2+transforms Mn3O4 such that the resulting Zn0.2Mn3O4 exhibits highly reversible storage properties of chloride ions,thus rendering Zn0.2Mn3O4 an excellent cathode of aqueous dual-ion batteries.With Zn2+trapped,Zn0.2Mn3O4 delivers the chloride-storage capacity over 200 mAh/g at an average potential of 1.6 V vs Zn2+/Zn by reversibly forming a new ionic compound equivalent to Zn0.2Mn3O4Cl1.7.Electrochemical quartz crystal microbalance results suggest chloride as the primary charge carrier in the reversible oxidative anion insertion.The Mn3O4 anion-hosting cathode couples with Zn metal anode in a full-cell dual-ion battery,demonstrating stable cycling in practical pouch cells with an energy density of 150 Wh/kg based on the mass of both electrodes.

关 键 词：anion insertion counter-ion insertion dual-ion battery metal oxide cathode Zn batteries 

分 类 号：TM912[电气工程—电力电子与电力传动]