Transactions of Nonferrous Metals Society of China The Chinese Journal of Nonferrous Metals

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中国有色金属学报

ZHONGGUO YOUSEJINSHU XUEBAO

第20卷    第2期    总第131期    2010年2月

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文章编号:1004-0609(2010)02-0288-05
MoO3包覆对锂一次电池CuF2正极材料性能的影响
刘修明,王先友,伍  文,王  欣,王国宝,杨顺毅

(湘潭大学 化学学院 环境友好化学与应用教育部重点实验室,湘潭 411105)

摘 要: 通过球磨CuF2和MoO3的混合物,制成CuF2/MoO3复合材料。通过X射线衍射(XRD)、扫描电镜(SEM)和电化学测试等研究CuF2/MoO3复合材料的结构和电化学性能。结果表明:MoO3晶粒均匀地附着在CuF2的表面,形成均匀的导电网,从而使制备的CuF2/MoO3复合材料具有高导电性,可作为锂一次电池正极活性材料。以0.1C倍率放电,截止电压为1.5 V,CuF2/MoO3复合材料放电比容量高达483mA∙h/g,放电电位平台为2.5 V,明显高于CuF2正极材料的278 mA∙h/g,接近其理论容量528 mA∙h/g。

 

关键字: 锂一次电池;正极材料;CuF2/MoO3复合材料;电化学性能

Effects of MoO3 encapsulating on performances of CuF2 cathode material for application of lithium primary batteries
LIU Xiu-ming, WANG Xian-you, WU Wen, WANG Xin, WANG Guo-bao, YANG Shun-yi

Key Laboratory of Environmentally Friendly Chemistry and Applications, Ministry of Education, School of Chemistry, Xiangtan University, Xiangtan 411105, China

Abstract:The CuF2/MoO3 composite was prepared by milling the mixture of CuF2 and MoO3. The structural and electrochemical properties of the CuF2/MoO3 composite were investigated by X-ray diffraction (XRD), scanning electron microscope (SEM) and electrochemical experiments. The results indicate that the MoO3 grains homogeneously coat on the surface of CuF2 and then form a high conductive matrix, which can be used for cathode material of lithium primary batteries. The specific discharge capacity of CuF2/MoO3 composite is as high as 483 mA∙h/g at a rate of 0.1C and the cutoff of 1.5 V, which is apparently higher than that of the lithium primary battery using pure CuF2 (278 mA∙h/g) as cathode active material and close to the theoretical specific capacity of CuF2 (528 mA∙h/g).
Key words:lithium primary , battery; cathode material; CuF2/MoO3 composite; electrochemical performance

 

Key words: lithium primary , battery; cathode material; CuF2/MoO3 composite; electrochemical performance

ISSN 1004-0609
CN 43-1238/TG
CODEN: ZYJXFK

ISSN 1003-6326
CN 43-1239/TG
CODEN: TNMCEW

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