公开(公告)号：US20120305834A1

公开(公告)日：2012-12-06

申请号：US13531930

申请日：2012-06-25

申请人： Noriyuki NEGI ,  Tatsuo NAGATA ,  Akihiko SAGUCHI

发明人： Noriyuki NEGI ,  Tatsuo NAGATA ,  Akihiko SAGUCHI

IPC分类号： H01M4/1395

CPC分类号： H01M4/38 ,  B22F2998/00 ,  C22C1/0483 ,  C22C1/10 ,  C22C13/00 ,  H01M4/134 ,  H01M4/364 ,  H01M4/387 ,  H01M10/052 ,  B22F9/04

摘要： The present invention provides a negative electrode material for a nonaqueous electrolyte secondary battery which can improve the cycle properties of a lithium ion secondary battery and a method for manufacturing the negative electrode material. The negative electrode material comprises at least two types of powdery alloy materials A and B in which powdery alloy material A contains Co, Sn, and Fe and does not contain Ti and powdery alloy material B contains Fe, Ti, and Sn, and the proportion of the mass of powdery alloy material B to the sum of the mass of powdery alloy material A and the mass of powdery alloy material B is at least 10 mass % and at most 30 mass %.

摘要翻译： 本发明提供一种能够提高锂离子二次电池的循环性能的非水电解质二次电池用负极材料及负极材料的制造方法。 负极材料包括至少两种粉末合金材料A和B，其中粉末状合金材料A含有Co，Sn和Fe并且不含Ti，粉末合金材料B含有Fe，Ti和Sn，并且比例 粉末状合金材料B的质量与粉末状合金材料A的质量和粉末状合金材料B的质量之和为10质量％以上且30质量％以下。