发明申请
US20150228974A1 POSITIVE ELECTRODE ACTIVE MATERIAL FOR NONAQUEOUS ELECTROLYTE SECONDARY BATTERIES, METHOD FOR MANUFACTURING THE SAME, AND NONAQUEOUS ELECTROLYTE SECONDARY BATTERY USING SAID POSITIVE ELECTRODE ACTIVE MATERIAL 有权
用于非电解电解质二次电池的正极电极活性材料,其制造方法和使用正电极活性材料的非电解电解质二次电池

  • 专利标题: POSITIVE ELECTRODE ACTIVE MATERIAL FOR NONAQUEOUS ELECTROLYTE SECONDARY BATTERIES, METHOD FOR MANUFACTURING THE SAME, AND NONAQUEOUS ELECTROLYTE SECONDARY BATTERY USING SAID POSITIVE ELECTRODE ACTIVE MATERIAL
  • 专利标题(中): 用于非电解电解质二次电池的正极电极活性材料,其制造方法和使用正电极活性材料的非电解电解质二次电池
  • 申请号: US14696745
    申请日: 2015-04-27
  • 公开(公告)号: US20150228974A1
    公开(公告)日: 2015-08-13
  • 发明人: Rei KokadoKensaku Mori
  • 申请人: Sumitomo Metal Mining Co., Ltd.
  • 优先权: JP2010-221587 20100930
  • 主分类号: H01M4/36
  • IPC分类号: H01M4/36 H01M4/525 H01M4/505 H01M4/131
POSITIVE ELECTRODE ACTIVE MATERIAL FOR NONAQUEOUS ELECTROLYTE SECONDARY BATTERIES, METHOD FOR MANUFACTURING THE SAME, AND NONAQUEOUS ELECTROLYTE SECONDARY BATTERY USING SAID POSITIVE ELECTRODE ACTIVE MATERIAL
摘要:
Provided is a method for manufacturing the positive electrode active material for nonaqueous electrolyte secondary batteries, the method comprising: a first step, wherein an alkaline solution with a tungsten compound dissolved therein is added to and mixed with a lithium metal composite oxide powder represented by a general formula LizNi1—x—yCoxMyO2 (wherein, 0.10≦x≦0.35, 0≦y≦0.35, 0.97≦Z≦1.20, and M is at least one element selected from Mn, V, Mg, Mo, Nb, Ti, and Al), including primary particles and secondary particles composed of aggregation of the primary particles, and thereby W is dispersed on a surface of the primary particles; and a second step, wherein, by heat treating the mixture of the alkaline solution with the tungsten compound dissolved therein and the lithium metal composite oxide powder, fine particles containing W and Li are formed on a surface of the primary particles.
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