Patent ID: 6489062
Filing Date: 2002-12-03
Classification: H01M,Y02E

Abstract:
A non-aqueous electrolyte secondary battery capable of withstanding a reflow temperature, comprising: a positive electrode having a conductive material, a binder, and an electrode active material selected from the group consisting of LiCoO2, LiNiO2 and LiMn2O4; a negative electrode having a conductive material, a binder and an electrode active material selected from the group consisting of a titanium oxide having an anatase structure, lithium titanate having a spinel structure and a molybdenum oxide; an electrolyte having a supporting salt and a non-aqueous solvent having a boiling point greater than 200Â° C.; a gasket comprised of a material having a heat deformation temperature greater than 230Â° C.; and a separator disposed between the positive electrode and the negative electrode and comprised of a material having a heat deformation temperature greater than 230Â° C.; wherein at least one of the positive electrode and the negative electrode comprises an electrode heat-treated to a temperature of 250Â° C. to 450Â° C. for deactivating a thermally active portion of each of the conductive material, the binder and the electrode active material thereof.