An Aqueous Rechargeable Zn//Co3O4 Battery with High Energy Density and Good Cycling Behavior

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• 作者：Xiaowei Wang ; Faxing Wang ; Liying Wang ; Minxia Li ; Yanfang Wang ; Bingwei Chen ; Yusong Zhu ; Lijun Fu ; Liusheng Zha ; Lixin Zhang ; Yuping Wu and Wei Huang
• 刊名：Advanced Materials
• 出版年：2016
• 出版时间：June 22, 2016
• 年：2016
• 卷：28
• 期：24
• 页码：4904-4911
• 全文大小：3054K
• ISSN：1521-4095

文摘

An aqueous rechargeable Zn//Co₃O₄ battery is demonstrated with Zn@carbon fibers and Co₃O₄@Ni foam as the negative and positive electrodes, respectively, using an electrolyte of 1 m KOH and 10 × 10⁻³m 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.