Patent ID: 8057710
Filing Date: 2011-11-15
Classification: H01B,H01M,Y02E

Abstract:
1. A composite comprising: a first material selected from the group consisting of metals and metalloids capable of being reversibly alloyed with lithium; a second material selected from the group consisting of metals incapable of being alloyed with lithium, compounds containing the metals, and compounds containing metals or metalloids capable of being irreversibly alloyed with lithium; and a third material which is at least one kind of metal having a higher electrical conductivity than the second material and which exists as a single-element material by being mixed with the first material and the second material without a chemical bond with the first material and the second material, wherein a content of the third material ranges from 10 to 10,000 ppm based on the total weight of the composite; the first material is selected from the group consisting of Si, Sn, Al, Sb, Bi, As, Ge, Pb, Zn, Cd, In, Tl and Ga; the second material is selected from the group consisting of: alloys of M a boron compound containing at least one of M a fluoride containing at least one of M a phosphide containing at least one of M a sulfide containing at least one of M an oxide containing M an oxide containing M wherein M M