Patent ID: 7611802
Filing Date: 2009-11-03
Classification: H01M,Y02E

Abstract:
1. A lithium secondary battery comprising an anode mix including a silicon- or tin-based active material as an anode active material and a photo-polymerizable material as a binder, wherein the anode mix includes the silicon- or tin-based anode active material, and the photo-polymerizable material is composed of one or more monomers selected from the group consisting of an epoxy derivative, polyester acrylate and epoxy acrylate, or oligomers or polymers in the range of about 1 to 50% by weight, based on the total weight of the anode mix, and a catalytic amount of a photoinitiator, wherein the silicon or tin-based anode active material is a silicon-carbonaceous material complex (Si—C); and the epoxy derivative is bisphenol A, and the epoxy acrylate is bisphenol A epoxy diacrylate, difunctional bisphenol epoxy acrylate or novolac epoxy acrylate.