Synthesis of the Stoichiometrical LixLi ' 1-xNa0.06MnO2 Containing Li2MnO3 Phase by Ion-Exchange Method
Wang, Huanhuan; Kang, Xueya; Xu, Jinbao; Wumaier, Tuerdi; Wang, Lei; Chen, Mingde; Zhang, Bingbing
2013
Source PublicationJournal of the Electrochemical Society
ISSN134651
Volume160Issue:11Pages:A2189-A2194
Abstract

Using ion-exchange method, previous researchers have successfully synthesized cathode materials with excellent electrochemical properties. In this paper, the stoichiometrical LixLi'1-xNa0.06MnO2 containing Li2MnO3 phase was synthesized depending on the two stages which was the characteristic of the ion-exchange route. The additive proportion of Li in the first and second steps of the ion exchange process was changed in the purpose of regulating the proportional relation of the layered Li gamma Na0.06MnO2 and the monoclinic Li2MnO3 (m-Li2MnO3) phases. The Li lambda Li1-xNa0.06MnO2 cathode material was characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and galvanostatic charge-discharge cycling technique in order to investigate the crystalline structure, surface morphology and electrochemical property. Through our experiments, Li0.25Li'0.75Na0.06MnO2 and Li0.35Li'0.65Na0.06MnO2 behaved the excellent electrochemical performance. Li0.25Li'0.75Na0.06MnO2 could deliver the capacity of 206 mAhg(-1) at 10 mAg(-1) in the first charge process, and Li0.35Li'0.65Na0.06MnO2 showed outstanding cycle stability. Its average discharge specific capacity reached 150 mAhg(-1). The improved performance might arise from the existence of the optimal proportion of m-Li2MnO3 phase. This stoichiometrical LixLi1-xNa0.06MnO2 might be a good substitute for the cathodes containing poisonous or expensive metals.

DOI10.1149/2.078311jes
Indexed BySCI
WOS IDWOS:000326905000029
Citation statistics
Document Type期刊论文
Identifierhttp://ir.xjipc.cas.cn/handle/365002/3907
Collection新疆维吾尔自治区电子信息材料与器件重点实验室
AffiliationXinjiang Tech Inst Phys & Chem CAS, Key Lab Funct Mat & Devices Special Environm CAS, Urumqi 830011, Peoples R China;Xinjiang Tech Inst Phys & Chem CAS, Xinjiang Key Lab Elect Informat Mat & Devices, Urumqi 830011, Peoples R China;Univ Chinese Acad Sci, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Wang, Huanhuan,Kang, Xueya,Xu, Jinbao,et al. Synthesis of the Stoichiometrical LixLi ' 1-xNa0.06MnO2 Containing Li2MnO3 Phase by Ion-Exchange Method[J]. Journal of the Electrochemical Society,2013,160(11):A2189-A2194.
APA Wang, Huanhuan.,Kang, Xueya.,Xu, Jinbao.,Wumaier, Tuerdi.,Wang, Lei.,...&Zhang, Bingbing.(2013).Synthesis of the Stoichiometrical LixLi ' 1-xNa0.06MnO2 Containing Li2MnO3 Phase by Ion-Exchange Method.Journal of the Electrochemical Society,160(11),A2189-A2194.
MLA Wang, Huanhuan,et al."Synthesis of the Stoichiometrical LixLi ' 1-xNa0.06MnO2 Containing Li2MnO3 Phase by Ion-Exchange Method".Journal of the Electrochemical Society 160.11(2013):A2189-A2194.
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