Novel Co(OH)2 with cotton-like structure as anode material for alkaline secondary batteries
The cotton-like Co(OH)2(S-Co(OH)2)was successfully synthesized and its electrochemical performance was systematically investigated.S-Co(OH)2 was prepared through the “destruction of the newly formed colloid Co(OH)2 by the reduction using sodium borohydride.The crystal structure and surface morphology were characterized by X-ray diffraction(XRD),scanning electron microscopy(SEM)and energy dispersive spectrometry(EDS).Used as an anode material for alkaline secondary batteries,S-Co(OH)2 sample exhibited better cycle stability,higher electrochemical capacity,and higher rate performance than those of conventional β-Co(OH)2.At a discharge current density of 100 mA/g,the initial discharge capacity of S-Co(OH)2 is 549.3 mAh/g and the discharge capacity is still sustained to be 329.2 mAh/g after 100 charge-discharge cycles with a capacity retention of 59.9%.
W Zhao Y L Liao S J Qiu H L Chu Y J Zou C L Xiang H Z Zhang F Xu L X Sun
Guangxi Key Laboratory of Information Materials,Guangxi Collaborative Innovation Center of Structure and Property for New Energy and Materials,and School of Materials Science and Engineering,Guilin University of Electronic Technology,Guilin 541004,PR China
国际会议
三亚
英文
1-6
2017-11-18（万方平台首次上网日期，不代表论文的发表时间）