Cation-Deficient Spinel ZnMn 2 O 4  Cathode in Zn(CF 3 SO 3 ) 2  Electrolyte for Rechargeable Aqueous Zn-Ion Battery

Zhang, Ning; Cheng, Fangyi; Liu, Yongchang; Zhao, Qing; Lei, Kaixiang; Chen, Chengcheng; Liu, Xiaosong; Chen, Jun

doi:10.1021/jacs.6b05958

articleJournal of the American Chemical SocietySep 14, 2016Closed access

Cation-Deficient Spinel ZnMn 2 O 4 Cathode in Zn(CF 3 SO 3 ) 2 Electrolyte for Rechargeable Aqueous Zn-Ion Battery

NZNing Zhang FCFangyi Cheng YLYongchang Liu QZQing Zhao KLKaixiang Lei

Nankai University · Collaborative Innovation Center of Chemical Science and Engineering Tianjin · +2 more institutions

PubMed

Indexed incrossrefpubmed

Abstract

Rechargeable aqueous Zn-ion batteries are attractive cheap, safe and green energy storage technologies but are bottlenecked by limitation in high-capacity cathode and compatible electrolyte to achieve satisfactory cyclability. Here we report the application of nonstoichiometric ZnMn2O4/carbon composite as a new Zn-insertion cathode material in aqueous Zn(CF3SO3)2 electrolyte. In 3 M Zn(CF3SO3)2 solution that enables ∼100% Zn plating/stripping efficiency with long-term stability and suppresses Mn dissolution, the spinel/carbon hybrid exhibits a reversible capacity of 150 mAh g–1 and a capacity retention of 94% over 500 cycles at a high rate of 500 mA g–1. The remarkable electrode performance results from the…

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Keywords

Chemistry
Spinel
Aqueous solution
Electrolyte
Cathode
Inorganic chemistry
Ion
Battery (electricity)

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