An Aqueous Rechargeable Zn//Co3 O4 Battery with High Energy Density and Good Cycling Behavior

Xiaowei Wang; Faxing Wang; Liying Wang; Minxia Li; Yanfang Wang; Bingwei Chen; Yusong Zhu; Lijun Fu; Liusheng Zha; Lixin Zhang; Yuping Wu; Wei Huang

doi:10.1002/adma.201505370

An Aqueous Rechargeable Zn//Co3 O4 Battery with High Energy Density and Good Cycling Behavior

Adv Mater. 2016 Jun;28(24):4904-11. doi: 10.1002/adma.201505370. Epub 2016 Apr 27.

Authors

Xiaowei Wang^{1

2}, Faxing Wang¹, Liying Wang^{1

3}, Minxia Li², Yanfang Wang², Bingwei Chen², Yusong Zhu¹, Lijun Fu¹, Liusheng Zha³, Lixin Zhang², Yuping Wu^{1

2}, Wei Huang¹

Affiliations

¹ College of Energy and Institute for Advance Materials, Nanjing Tech University, Nanjing, 211816, Jiangsu Province, China.
² Department of Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University, Shanghai, 200433, China.
³ State Key Laboratory for Modification of Chemical Fibres and Polymer Materials, Donghua University, Shanghai, 201620, China.

PMID: 27120391
DOI: 10.1002/adma.201505370

Abstract

An aqueous rechargeable Zn//Co3 O4 battery is demonstrated with Zn@carbon fibers and Co3 O4 @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.

Keywords: flexible; free dendrite; long cycling; rechargeable battery; zinc.