Patent ID: 7662519
Filing Date: 2010-02-16
Classification: H01M,Y02E,Y02P

Abstract:
1. A non-aqueous electrolyte secondary battery, comprising a substance having a peak from 162.9 to 164.0 eV by XPS analysis on the anode surface, wherein when peak division of the photoelectron spectrum is performed by XPS analysis on the anode surface, the ratio (Cc/Cs) between the carbon concentration Cc (atom %) and the sulfur concentration Cs (atom %) is 5 to 50, and the ratio (Cs the substance having a peak from 162.9 to 164.0 eV comprises a decomposed substance of a compound represented by the formula (1): wherein Q represents an oxygen atom, a methylene group, or a C—S single bond; A represents a substituted or unsubstituted alkylene group having 1 to 5 carbon atoms, a carbonyl group, a sulfinyl group, a substituted or unsubstituted fluoroalkylene group having 1 to 6 carbon atoms, or a divalent group having 2 to 6 carbon atoms in which a plurality of alkylene units, a plurality of fluoroalkylene units or an alkylene unit and a fluoroalkylene unit are bonded through an ether bond; and B represents a substituted or unsubstituted alkylene group, a substituted or unsubstituted fluoroalkylene group, or an oxygen atom.