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Invention Publication
CN103053052A 锂二次电池用正极活性物质的制造方法、锂二次电池用正极活性物质和锂二次电池 无效 - 撤回

  • Patent Title: 锂二次电池用正极活性物质的制造方法、锂二次电池用正极活性物质和锂二次电池
  • Patent Title (English): Method for manufacturing positive electrode active material for lithium secondary cell, positive electrode active material for lithium secondary cell, and lithium secondary cell
  • Application No.: CN201280002229.8
    Application Date: 2012-04-26
  • Publication No.: CN103053052A
    Publication Date: 2013-04-17
  • Inventor: 织地学 , 白川彰彦 , 河边功 , 猪濑耐 , 利根川明央
  • Applicant: 昭和电工株式会社
  • Applicant Address: 日本东京都
  • Assignee: 昭和电工株式会社
  • Current Assignee: 昭和电工株式会社
  • Current Assignee Address: 日本东京都
  • Agency: 北京市中咨律师事务所
  • Agent 李照明; 段承恩
  • Priority: 102091/2011 2011.04.28 JP
  • International Application: PCT/JP2012/061182 2012.04.26
  • International Announcement: WO2012/147837 JA 2012.11.01
  • Date entered country: 2013-01-30
  • Main IPC: H01M4/58
  • IPC: H01M4/58 ;  C01B25/45 ;  H01M4/36
锂二次电池用正极活性物质的制造方法、锂二次电池用正极活性物质和锂二次电池
Abstract:
本发明提供能够实现高容量、良好的放电率特性的由橄榄石型的锂金属磷酸盐和碳的复合体形成的锂二次电池用正极活性物质的制造方法。本发明的锂二次电池用正极活性物质的制造方法，其特征在于，包含以下工序：测定组成式LiMPO4(元素M是选自Fe、Mn、Ti、V、Cr、Co、Ni、Nb、Ta、Mo、W中的任一种或两种以上的过渡金属)所示的磷酸化合物的组成比，确定所述组成比达不到Li∶M∶P＝1∶1∶1的元素的工序；将作为与所述确定出的元素对应的元素源的锂源、金属(M)源或磷酸源、与所述磷酸化合物、以及碳质材料或碳质材料前体进行混炼，得到第1含碳混合物的工序；以及对所述第1含碳混合物进行烧成的工序。
Abstract(English):

The present invention provides a method for manufacturing a positive electrode active material for a lithium secondary cell made of a complex composed an olivine-type lithium metal phosphate and carbon, and that can achieve high capacity and good discharge rate characteristics. This method for manufacturing a positive electrode active material for a lithium secondary cell is characterized in having: a step for measuring the composition ratio of a phosphate compound represented by composition formula LiMPO4 (where element M is Fe, Mn, or one or more transition metals among Ti, V, Cr, Co, Ni, Nb, Ta, Mo, and W) and specifying an element for which the composition ratio does not reach Li:M:P = 1:1:1; a step for kneading a lithium source, a metal (M) source, or a phosphate source as an element source corresponding to the specified element, the phosphate compound, and a carbonaceous material or a carbonaceous material precursor to obtain a first carbon-containing mixture; and a step for baking the first carbon-containing mixture.

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