Lithium secondary battery with suppressed decomposition of...

Details Lithium secondary battery with suppressed decomposition of... Lithium secondary battery with suppressed decomposition of...

2007-10-30

2007-10-30

Yuan, Dah-wei (Department: 1745)

Chemistry: electrical current producing apparatus, product, and

Current producing cell, elements, subcombinations and...

Separator, retainer or spacer insulating structure

C429S189000, C429S247000, C429S217000

Reexamination Certificate

active

10347179

ABSTRACT:
Provided are a lithium secondary battery with suppressed decomposition of an electrolytic solution, and a preparation method thereof. The lithium secondary battery includes a current collector, a cathode and an anode having each active material layer formed on the current collector, and a polymer electrolyte interposed between the cathode and the anode. In the lithium secondary battery, a fluorine resin film is formed on at least one surface of the active material layers of the cathode and the anode. A fluorine resin exists in pores between constituents contained in at least one active material layer of the cathode and the anode. The polymer electrolyte is a polymerized product of a crosslinking monomer and an electrolytic solution including a lithium salt and an organic solvent. Also, a porous membrane made of an insulating resin is interposed between the cathode and the anode.

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Copy of Japanese Office Action dated Apr. 4, 2005.
Chinese Office Action issued by the Chinese Patent Office on Jan. 28, 2005.

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