Title:
リチウム電池
Document Type and Number:
Japanese Patent JP5151692
Kind Code:
B2
Abstract:
A lithium battery includes a substrate, a positive electrode layer, a negative electrode layer, and a sulfide solid electrolyte layer disposed between the positive electrode layer and the negative electrode layer, the positive electrode layer, the negative electrode layer, and the sulfide solid electrolyte layer being provided on the substrate. In this lithium battery, the positive electrode layer is formed by a vapor-phase deposition method, and a buffer layer that suppresses nonuniformity of distribution of lithium ions near the interface between the positive electrode layer and the sulfide solid electrolyte layer is provided between the positive electrode layer and the sulfide solid electrolyte layer. As the buffer layer, a lithium-ion conductive oxide, in particular, Li x La (2-x)/3 TiO 3 (x = 0.1 to 0.5), Li 7+x La 3 Zr 2 O 12+(x/2) (-5 ¤ x ¤ 3, preferably -2 ¤ x ¤ 2), or LiNbO 3 is preferably used.
Inventors:
Yoshiko Kanda
Susumu Ota
Uemura Takashi
Kentaro Yoshida
Ogawa Koyasu
Susumu Ota
Uemura Takashi
Kentaro Yoshida
Ogawa Koyasu
Application Number:
JP2008139245A
Publication Date:
February 27, 2013
Filing Date:
May 28, 2008
Export Citation:
Assignee:
Sumitomo Electric Industries, Ltd.
International Classes:
H01M10/0562; H01M4/02; H01M4/13; H01M4/139; H01M4/48; H01M4/485; H01M10/052; H01M10/0525; H01M10/0585; H01M10/36
Domestic Patent References:
| JP2004281316A | ||||
| JP2001093535A | ||||
| JP2003346901A | ||||
| JP2005209434A | ||||
| JP2004244703A | ||||
| JP9022693A | ||||
| JP9270260A | ||||
| JP2005108810A | ||||
| JP2003077529A |
Foreign References:
| WO2007004590A1 |
Attorney, Agent or Firm:
Hiroshi Yamano