利索-全球专利检索

  1. 登录
  2. 注册
发明授权
US06344294B1 Process for preparing a positive electrode active material for a nonaqueous secondary battery by forming an oxalate precipitate 有权
通过形成草酸盐沉淀物制备用于非水二次电池的正极活性材料的方法

  • 专利标题： Process for preparing a positive electrode active material for a nonaqueous secondary battery by forming an oxalate precipitate
  • 专利标题（中）： 通过形成草酸盐沉淀物制备用于非水二次电池的正极活性材料的方法
  • 申请号： US09426722
    申请日： 1999-10-26
  • 公开(公告)号： US06344294B1
    公开(公告)日： 2002-02-05
  • 发明人: Naoto Torata , Takehito Mitate
  • 申请人： Naoto Torata , Takehito Mitate
  • 优先权： JP10-304979 19981027
  • 主分类号： H01M404
  • IPC分类号： H01M404
Process for preparing a positive electrode active material for a nonaqueous secondary battery by forming an oxalate precipitate
摘要：
A process for producing a positive electrode active material for a nonaqueous secondary battery comprising the steps of: dissolving compounds capable of providing lithium ions, nickel ions and optionally ions of at least one element selected from the group consisting of transition metals,-3B-group elements, 4B-group elements and 5B-group elements in a buffer solution containing at least lithium ions, thereby to prepare a starting aqueous solution; adding an oxalic acid to the starting aqueous solution to form a precipitate of oxalates of said ions and separating the precipitate; calcining the resulting precipitate to produce LiNI1−xMxO2, wherein 0≦X
摘要（中）：

一种非水系二次电池用正极活性物质的制造方法，其特征在于，将能够提供锂离子，镍离子和任选离子的化合物溶解于选自过渡金属-3B-基团中的至少一种元素 元素，4B族元素和5B族元素，至少含有锂离子，从而制备起始水溶液; 向起始水溶液中加入草酸以形成所述离子的草酸盐沉淀物并分离沉淀物; 煅烧所得沉淀物以制备LiNI 1-x M x O 2，其中0 <= X <0.5，M为选自过渡金属，3B族元素，4B族元素和5B族元素中的至少一种元素; 并在分离出沉淀物之后重新使用残留液体以制备起始水溶液。

信息查询
Espacenet
0/0