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    Method of manufacturing a nonaqueous electrolyte secondary battery negative electrode material
    6.
    发明专利
    Method of manufacturing a nonaqueous electrolyte secondary battery negative electrode material 有权
    空值

    公开(公告)号：JP4037975B2

    公开(公告)日：2008-01-23

    申请号：JP36957798

    申请日：1998-12-25

    Applicant: 株式会社トクヤマ

    Inventor： 新 国居 ,  博也 山下 ,  直人 高橋

    IPC: H01M4/02 ,  H01M4/04 ,  H01M4/38 ,  H01M4/485 ,  H01M4/58 ,  H01M10/05 ,  H01M10/0566

    CPC classification number: Y02P70/54

    Abstract: PROBLEM TO BE SOLVED: To decrease initial irreversible capacity, and to enhance the cycle characteristics and capacity by bringing a negative electrode raw material into contact with a solution prepared by dissolving alkali metals or an alkaline earth metals in an amine compound solvent to adsorb these metals. SOLUTION: As alkali metals or alkaline earth metals used, Li, Na, K, and Ca are preferable. As a solvent for dissolving these metals, use of an amine compound that does not lose a reducing function of metal by reaction is essential, and use of ethylamine and ethylene diamine is especially preferable. The concentration of metal in a metal solution is usually 2-10 wt.%. As a negative electrode raw material, composite tin oxide and composite silicon oxide are especially preferable. In order to bring the negative electrode raw material into contact with a solution of metal such as an alkali metal, for example, a reaction bath with stirring blades is used to mix a solid with liquid.

    Abstract translation: 要解决的问题：通过使负极原料与通过将碱金属或碱土金属溶解在胺化合物溶剂中而制备的溶液接触来吸附这些金属来降低初始不可逆容量并提高循环特性和容量 。 解决方案：作为碱金属或碱土金属，优选使用Li，Na，K和Ca。 作为溶解这些金属的溶剂，必须使用通过反应不失去金属还原功能的胺化合物，特别优选使用乙胺和乙二胺。 金属溶液中金属的浓度通常为2-10重量％。 作为负极原料，特别优选复合氧化锡和复合氧化硅。 为了使负极原料与金属如碱金属的溶液接触，例如，使用具有搅拌叶片的反应槽将固体与液体混合。

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