Title:
水系リチウム二次電池
Document Type and Number:
Japanese Patent JP5218406
Kind Code:
B2
Abstract:
The present invention provides a water based lithium secondary battery that can inhibit deteriorations in capacity owing to charge-and-discharge operations and maintain a high capacity even after it is charged and discharged repeatedly. The water based lithium secondary battery includes a positive electrode, a negative electrode, a separator 4 sandwiched between these, and an aqueous electrolyte solution obtained by dissolving an electrolyte made of a lithium salt in a water based solvent. As the water based solvent, a pH buffer solution is employed. The buffer solution is obtained by dissolving an acid and its conjugate base's salt, a base and its conjugate acid's salt, a salt made from a weak acid and a strong base, a salt made from a weak base and a strong acid, or a salt made from a weak acid and a weak base in water.
Inventors:
Hironori Kondo
Takeshi Sasaki
Osamu Hibida
Yuichi Ito
Takuaki Okuda
Yoji Takeuchi
Ukyo Yoshio
Takeshi Sasaki
Osamu Hibida
Yuichi Ito
Takuaki Okuda
Yoji Takeuchi
Ukyo Yoshio
Application Number:
JP2009522583A
Publication Date:
June 26, 2013
Filing Date:
June 30, 2008
Export Citation:
Assignee:
Toyota Central R & D Labs.
International Classes:
H01M10/36; H01M4/48; H01M4/485; H01M4/58
Domestic Patent References:
| JP2000340256A | 2000-12-08 | |||
| JP2006147287A | 2006-06-08 | |||
| JP2006012544A | 2006-01-12 | |||
| JP2006073259A | 2006-03-16 | |||
| JP2004349079A | 2004-12-09 | |||
| JP2004362837A | 2004-12-24 | |||
| JP2000340256A | 2000-12-08 | |||
| JP2006147287A | 2006-06-08 | |||
| JP2006012544A | 2006-01-12 | |||
| JP2006073259A | 2006-03-16 | |||
| JP2004349079A | 2004-12-09 |
Attorney, Agent or Firm:
Yoshiyasu Takahashi
Tamiwa Iwakura
Takahashi Shoki
Tamiwa Iwakura
Takahashi Shoki