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    POSITIVE-ELECTRODE ACTIVE MATERIAL FOR LITHIUM-ION SECONDARY BATTERY, POSITIVE ELECTRODE AND LITHIUM-ION SECONDARY BATTERY
    7.
    发明公开
    POSITIVE-ELECTRODE ACTIVE MATERIAL FOR LITHIUM-ION SECONDARY BATTERY, POSITIVE ELECTRODE AND LITHIUM-ION SECONDARY BATTERY 审中-公开
    锂离子二次电池，正极和锂离子二次电池用正极活性材料

    公开(公告)号：EP3229293A1

    公开(公告)日：2017-10-11

    申请号：EP17159969.9

    申请日：2017-03-09

    申请人： Sumitomo Rubber Industries, Ltd. ,  National Institute of Advanced Industrial Science and Technology

    发明人： KUBO, Tatsuya ,  YAMANO, Akihiro ,  YAMASHITA, Naoto ,  YANAGIDA, Masahiro

    IPC分类号： H01M4/04 ,  H01M4/1397 ,  H01M4/36 ,  H01M10/052 ,  H01M4/62

    摘要： An object of the present invention is to provide a novel sulfur-based positive electrode active material for a lithium-ion secondary battery which is excellent in cyclability and can largely improve a charging and discharging capacity, a positive electrode comprising the positive electrode active material and a lithium-ion secondary battery made using the positive electrode. The sulfur-based positive electrode active material is obtainable by subjecting a starting material comprising a polymer, sulfur and an organometallic compound dispersed in a form of fine particles to heat-treatment under a non-oxidizing atmosphere, wherein the particles of metallic sulfide resulting from sulfurization of the organometallic compound are dispersed in the heat-treated material, and particle size of the metallic sulfide particles is not less than 10 nm and less than 100 nm.

    摘要翻译： 本发明的目的在于提供一种循环特性优异，可充分提高充放电容量的锂离子二次电池用新型硫系正极活性物质，含有该正极活性物质的正极和 使用该正极制成的锂离子二次电池。 硫系正极活性物质可以通过将包含分散成微粒状的聚合物，硫和有机金属化合物的原料在非氧化性气氛下进行热处理而得到，其中， 有机金属化合物的硫化分散在热处理材料中，金属硫化物颗粒的粒径不小于10nm且小于100nm。