Patent ID: 9028711
Filing Date: 2015-05-12
Classification: C22C,H01M,Y02E,Y02P

Abstract:
1. A negative electrode material for a nonaqueous electrolyte secondary battery, characterized in that: the negative electrode material comprises at least three types of powder materials, the three types of powder materials are respectively alloy material A, alloy material B, and a conductive material, said alloy material A comprises an alloy containing Co, Sn, and Fe and having a CoSn said alloy material B comprises Co a proportion R the content of the conductive material with respect to the total of alloy material A, alloy material B, and the conductive material is at least 7 mass % and at most 20 mass %, and the negative electrode material has an exotherm starting temperature of less than 375.4° C. as determined by differential scanning calorimetry.