Title:
固体電解質二次電池
Document Type and Number:
Japanese Patent JP4092669
Kind Code:
B2
Abstract:
A solid-electrolyte secondary battery is provided which comprises a positive electrode, negative electrode and a solid electrolyte provided between the electrodes. The solid electrolyte contains as a matrix polymer a vinylidene fluoride/hexafluoropropylene block copolymer. The film of the block copolymer has a high mechanical toughness and solvent retaining capability. Use of this block copolymer film as the matrix polymer of the solid electrolyte greatly improves the adhesive strength, load characteristic and low-temperature performance. In the block copolymer, the proportion of hexafluoropropylene should preferably 3 to 7.5 % by weight. The molecular weight should preferably be of over 550,000. A block copolymer of over 300,000 in Mw and under 550,000 in Mw may be used in combination with the above one.
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Inventors:
Takenobu Hatakezawa
Kondo Takeyuki
Yukiko Iijima
Kondo Takeyuki
Yukiko Iijima
Application Number:
JP11755198A
Publication Date:
May 28, 2008
Filing Date:
April 27, 1998
Export Citation:
Assignee:
ソニー株式会社
International Classes:
C08F214/22; C08G65/323; H01M4/62; H01M10/05; H01M10/0525; H01M10/0565; H01M10/058
Domestic Patent References:
| JP10302837A |
Attorney, Agent or Firm:
Yoichiro Fujishima