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dc.contributor.authorLiu, HS
dc.contributor.authorLi, J
dc.contributor.authorZhang, ZR
dc.contributor.authorGong, ZL
dc.contributor.authorYang, Y
dc.contributor.author杨勇
dc.date.accessioned2012-04-15T02:34:13Z
dc.date.available2012-04-15T02:34:13Z
dc.date.issued2003
dc.identifier.citationJOURNAL OF SOLID STATE ELECTROCHEMISTRY,2003,7(8):456-462zh_CN
dc.identifier.issn1432-8488
dc.identifier.urihttp://dx.doi.org/doi:10.1007/s10008-002-0342-z
dc.identifier.urihttps://dspace.xmu.edu.cn/handle/2288/12084
dc.description.abstractLiNi0.8Co0.2O2 cathode materials were synthesized by the sol-gel method using citric acid as a chelating agent. The effects of sintering temperature and time on the structure and electrochemical performance of the materials were investigated. The materials were characterized by X-ray diffraction, together with refinement analysis by the Rietveld method. The results showed that sintering temperature and time had significant influence on the structure of the materials. The lattice parameters (a, c, c/a and volume) and the amount of Ni in the Li 3a site showed a peak shape change with sintering temperature and time. The sample sintering at 998 K for 24 h showed the best ordering layered structure with the maximum c/a ratio and the least amount of Ni on the Li 3a site. The charge-discharge experiments also indicated that the sample had the best electrochemical properties, with an initial capacity of 181 mA h/g and a capacity retention of 82.9% after 50 cycles at a 0.1 C rate between 3.0 V and 4.2 V. In addition, the compositional homogeneity of these cathode materials derived using the sol-gel method was demonstrated by scanning electron microscopy/energy dispersive analysis.zh_CN
dc.language.isoenzh_CN
dc.publisherSPRINGER-VERLAGzh_CN
dc.subjectlithium nickel cobalt oxidezh_CN
dc.subjectsol-gel methodzh_CN
dc.subjectRietveld refinementzh_CN
dc.subjectlithium ion batterieszh_CN
dc.titleThe effects of sintering temperature and time on the structure and electrochemical performance of LiNi0.8Co0.2O2 cathode materials derived from sol-gel methodzh_CN
dc.typeArticlezh_CN


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