Patent ID: 7906237

Claim:
A battery comprising: a cathode; an anode having an anode active material including silicon deposited on a current collector material by vapor-phase deposition, wherein the silicon is alloyed with at least part of the current collector, and an electrolyte, wherein the electrolyte includes a light metallic salt having M-X bond where M represents a transition metal element or a 3B Group element, a 4B Group element, or a 5B Group element in a short-period periodic table and where X represents oxygen (O) or sulfur (S), at least one or more additional light metallic salts selected from the group consisting of LiPF 6 , LiBF 4 , LiClO 4 , LiAsF 6 , a lithium salt expressed by Chemical formula 11, and a lithium salt expressed by Chemical formula 12, where Chemical formulas 11 and 12 are provided as follows: LiN(C m F 2m+1 SO 2 )(C n F 2n+1 SO 2 ) Chemical formula 11 where m and n are integer numbers ranging from 1 or greater LiC(C p F 2p+1 SO 2 )(C q F 2q+1 SO 2 )(C r F 2r+1 SO 2 ) Chemical formula 12 where p, q, and r are integer numbers ranging from 1 or greater, and wherein the anode active material excludes a binder.