Document Type and Number:
Japanese Patent JP5256649
Kind Code:
B2
Abstract:
To provide an active material for a battery having a low environmental load, capable of being applied to an aqueous lithium secondary battery having an aqueous electrolyte and providing high charge/discharge cycle characteristics; and to provide the aqueous secondary battery using the active material for the battery.
The active material for the battery contains titanium pyrophosphate having the basic composition of (TiO)2P2O7as a main component. The aqueous secondary battery 1 comprises a positive electrode 2 including a positive active material, a negative electrode 3 including a negative active material, and the aqueous electrolyte prepared by dissolving a lithium salt in water. In the aqueous lithium secondary battery 1, the negative active material contains the titanium pyrophosphate having the basic composition of (TiO)2P2O7as the main component. Or the positive active material contains a substance capable of inserting and releasing Li at the potential nobler than that of the titanium pyrophosphate as the main component.
COPYRIGHT: (C)2009,JPO&INPIT
Inventors:
Hironori Kondo
Takeshi Sasaki
Osamu Hibida
Yuichi Ito
Takuaki Okuda
Yoji Takeuchi
Ukyo Yoshio
Application Number:
JP2007145218A
Publication Date:
August 07, 2013
Filing Date:
May 31, 2007
Assignee:
Toyota Central R & D Labs.
International Classes:
H01M4/131; H01M4/58; H01M4/136; H01M4/505; H01M10/052; H01M10/0566; H01M10/36
Domestic Patent References:
| JP2007115565A | | | | |
| JP8130014A | | | | |
| JP10172613A | | | | |
| JP2004136226A | | | | |
| JP2005158604A | | | | |
| JP2001102086A | | | | |
| JP9508490A | | | | |
Attorney, Agent or Firm:
Yoshiyasu Takahashi
Tamiwa Iwakura
Takahashi Shoki
