Patent ID: 6337159
Filing Date: 2002-01-08
Classification: H01M,Y02E

Abstract:
A non-aqueous electrochemical cell, comprising:a cathode; an electrolyte; and an anode comprising a core comprising carbonaceous particles bounded by a binder selected from the group consisting of polytetrafluoroethylene, polyvinilidenefluoride and a carbon-based material; and a solid electrolyte interphase film, said film forming a distinct layer surrounding said core; wherein said film is chemically bonded to the surface of said core, and wherein said film comprises at least one compound selected from the group consisting of alkali or alkaline-earth metal salt, an alkali or alkaline earth metal oxide, an alkali or alkaline-earth metal sulfide and any combination thereof; and wherein said film is an alkali cation conductor and an electronic insulator.