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LiMeO_2材料中锂和镍原子混排的模拟和实验研究
引用本文:张熙贵,张建,杨传铮,李佳. LiMeO_2材料中锂和镍原子混排的模拟和实验研究[J]. 无机材料学报, 2010, 25(1): 8-12. DOI: 10.3724/SP.J.1077.2010.00008
作者姓名:张熙贵  张建  杨传铮  李佳
作者单位:(中国科学院上海微系统与信息技术研究所,上海200050)
基金项目:上海市优秀学科带头人项目(07XD14035); 中科院创新基金(CXJJ-09-M41); 上海市科学技术委员会资助项目(08ZR1422500)
摘    要:在分析R3-m(No.166)中3a位和3b位原子对各(hkl)晶面结构因子的贡献时发现,它们有相加和相减关系.成相加关系的衍射线强度与混合占位参数X无关,而为相减关系的衍射线强度随混合占位参数X明显变化.因此,提出用相加和相减两线条的衍射积分强度比的新方法来研究这类材料中Li、Ni的晶体学占位问题.获得(I003/I104)1/2、(I101/I012)1/2、(I101/I104)1/2与混合占位参数X均为线性关系.反之,由实验测得实际样品的衍射积分强度比(I003/I104)1/2、(I101/I012)1/2、(I101/I104)1/2,用线性关系计算求得对应的混合占位参数X.

关 键 词:锂离子电池  Li(NiuCovMn1-u-v)O2  原子混合占位  X射线衍射
收稿时间:2009-02-11
修稿时间:2009-07-01

Simulation and Experimental Study on Mixed Arrange of Li/Ni Atoms in LiMeO_2 Materials
ZHANG Xi-Gui,ZHANG Jian,YANG Chuan-Zheng,LI Jia. Simulation and Experimental Study on Mixed Arrange of Li/Ni Atoms in LiMeO_2 Materials[J]. Journal of Inorganic Materials, 2010, 25(1): 8-12. DOI: 10.3724/SP.J.1077.2010.00008
Authors:ZHANG Xi-Gui  ZHANG Jian  YANG Chuan-Zheng  LI Jia
Affiliation:ZHANG Xi-Gui,ZHANG Jian,YANG Chuan-Zheng,LI Jia(Shanghai Institute of Microsystem , Information Technology,Chinese Academy of Sciences,Shanghai 200050,China)
Abstract:When analyzing the contributions of these atoms occupying 3a and 3b sites in R3-m to X-ray diffraction intensity of planes(hkl) in LiMeO_2,a plus or minus relationships are found.For the lines of plus relationship of the atoms to X-ray diffraction intensity has no relationship with the mixed occupying parameter X,but the minus ones do.Therefore,a novel method is proposed to study the atomic occupying problem of Li and Ni.The linear relationships between intensity ratio of(I003/I104)1/2,(I101/I012)1/2,(I101/...
Keywords:Li-ion battery  Li(NiuCovMn1-u-v)O2  atomic mixing occupation  X-ray diffraction
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