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An Aqueous Rechargeable Zn//Co 3 O 4 Battery with High Energy Density and Good Cycling Behavior
Author(s) -
Wang Xiaowei,
Wang Faxing,
Wang Liying,
Li Minxia,
Wang Yanfang,
Chen Bingwei,
Zhu Yusong,
Fu Lijun,
Zha Liusheng,
Zhang Lixin,
Wu Yuping,
Huang Wei
Publication year - 2016
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.201505370
Subject(s) - battery (electricity) , materials science , electrolyte , energy density , aqueous solution , electrode , cycling , energy storage , electrochemistry , nanotechnology , computer science , engineering physics , power (physics) , chemistry , physics , quantum mechanics , archaeology , history
An aqueous rechargeable Zn//Co 3 O 4 battery is demonstrated with Zn@carbon fibers and Co 3 O 4 @Ni foam as the negative and positive electrodes, respectively, using an electrolyte of 1 m KOH and 10 × 10 −3 m Zn(Ac) 2 . It can operate at a cell voltage as high as 1.78 V with an energy density of 241 W h kg −1 and presents excellent cycling. The battery is also assembled into a flexible shape, which can be applied in flexible or wearable devices requiring high energy.