LITHIUM POLYMER SECONDARY CELL AND ITS MANUFACTURING METHOD

WIPO Patent Application WO/2003/026056

A1

A lithium polymer secondary cell manufacturing method for manufacturing a lithium polymer secondary cell having a polymer electrolyte layer of lithium ion−conductive polymer gel between the positive and negative electrodes, comprising a step of preparing a precursor solution containing at least one kind of polymerizable monomer, a lithium salt, nonaqueous organic solvent, and 500−10,000 ppm of photopolymerization initiator initiating a polymerization reaction by ultraviolet irradiation and a step of forming a polymer electrolyte layer of a lithium ion−conductive polymer gel by impregnating a substrate for preparing a polymer electrolyte with the precursor solution and polymerizing the polymerizable monomer by irradiating the polymerizable monomer with ultraviolet radiation with illuminance of over 30 mW&sol cm² for 0.1 to 20 seconds. By optimizing the concentration of the photopolymerization initiator and the ultraviolet radiation illuminance, the cell characteristics and productivity of the lithium polymer secondary cell can be improved.

TORATA NAOTO (JP)
NISHIJIMA MOTOAKI (JP)
NISHIMURA NAOTO (JP)

PCT/JP2002/009532

March 27, 2003

September 17, 2002

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SHARP KK (JP)
TORATA NAOTO (JP)
NISHIJIMA MOTOAKI (JP)
NISHIMURA NAOTO (JP)

C08F2/00; C08F2/06; C08F2/44; C08F2/46; C08F299/02; H01M4/02; H01M4/36; H01M4/587; H01M10/05; H01M10/052; H01M10/0525; H01M10/0565; (IPC1-7): H01M10/40

JPH10218913A	1998-08-18
JPH09185962A	1997-07-15
JP2001210380A	2001-08-03
JP2000080138A	2000-03-21
JPH0997617A	1997-04-08
US20010005561A1	2001-06-28

Nogawa, Shintaro (1-3 Nishitenma 5-chome, Kita-k, Osaka-shi Osaka, JP)

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