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Microstructure and Electrochemical Properties of Co-precipitation Prepared LiMnxCoyO2
Author NameAffiliationE-mail
WANG Chen School of Materials Science and Engineering, Central South University, Changsha 410083, China  
ZHANG Meng-Qin School of Materials Science and Engineering, Central South University, Changsha 410083, China  
XIAO Wen-Hao School of Materials Science and Engineering, Central South University, Changsha 410083, China  
AI Yan-Ling School of Materials Science and Engineering, Central South University, Changsha 410083, China
Key Laboratory of Nonferrous Materials Science and Engineering, Ministry of Education, Central South University, Changsha 410083, China 
ylai@csu.edu.cn 
Abstract: Layered LiMnxCoyO2 was prepared by co-precipitation preparation of precursor, and then sintered under 900℃ with different time. The results of X-ray diffraction (XRD), scanning electron microscopy (SEM) and transmission electron microscopy (TEM) show that the crystalline structure of the layered LiMnxCoyO2 is rhombohedron lattice whose space group is R3m, and has a similar lattice constant with LiCoO2. Under different sintering time, samples are spherical under scanning electron microscopy (SEM); as the sintering time extended, spherical morphology is better. With different samples of electrochemical performance test show that the samples with longer sintering time and higher relative content of Mn has better initial charge-discharge capacity and cycle performance.
Keywords: LiMnxCoyO2  crystal structure  cycle performance  co-precipitation  sintering
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WANG Chen,ZHANG Meng-Qin,XIAO Wen-Hao,AI Yan-Ling.Microstructure and Electrochemical Properties of Co-precipitation Prepared LiMnxCoyO2[J].Chinese Journal of Inorganic Chemistry,2017,33(5):860-866.
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Chinese Journal of Inorganic Chemistry