Patent ID: 6558841
Filing Date: 2003-05-06
Classification: H01M,Y02E,Y02T

Abstract:
A negative electrode for non-aqueous electrolyte rechargeable batteries comprising:an active material composed of a lithium ion storing phase, which contains at least Sn and a lithium ion non-storing phase, and an electronically conductive material, which coats 10% or more of the surface of said active material, wherein said electronically conductive material is a carbonaceous material comprising fibrous carbon having a fiber shape having a lattice spacing d002 of the (002) plane of 3.35 to 3.70 Ã¥, a length of 1 to 20 &mgr;m and a diameter of 0.1 to 0.5 &mgr;m, and said fibrous carbon in the carbonaceous material is in the range of 1 to 20 wt % of said active material and said electronically conductive material.