Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
LITHIUM-ION SECONDARY BATTERY
Document Type and Number:
Japanese Patent JP2012014968
Kind Code:
A
Abstract:

To provide a lithium-ion secondary battery which can stably maintain charging/discharging capacity over a long period of time, while increasing rapid charging capacity.

A lithium-ion secondary battery 10 comprises: an internal electrode pair 1 obtained by alternately laminating a sheet-shaped positive electrode 1a using lithium metal oxide as positive pole active material 12 and a sheet-shaped negative electrode 1b using lithium titanium oxide as negative pole active material 14, via a separator 1c; and an exterior body for storing the internal electrode pair 1 together with an electrolytic solution DL in a sealed state. In the battery, the capacity of the negative pole active material 14 is set at a value smaller than that of the positive pole active material, and the press density of the negative pole active material 14 is 1.4-1.7 g/cc.


Inventors:
AKAGAWA KAZUHIRO
SUGAWARA SHUICHI
FUJISAKI TAKASHI
OZAWA KAZUNORI
Application Number:
JP2010150779A
Publication Date:
January 19, 2012
Filing Date:
July 01, 2010
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
ENAX INC
International Classes:
H01M10/0585; H01M2/02; H01M4/131; H01M4/1391; H01M4/36; H01M4/485; H01M4/66; H01M10/0525; H01M10/0568
Domestic Patent References:
JP2010009898A2010-01-14
JP2009277395A2009-11-26
JP2004071405A2004-03-04
JPH1027626A1998-01-27
JP2000012090A2000-01-14
JPH1069922A1998-03-10
JP2007273166A2007-10-18
JP2008511528A2008-04-17
JP2006253081A2006-09-21
JP2007227090A2007-09-06
JP2010153258A2010-07-08
JP2007323958A2007-12-13
JP2009245762A2009-10-22
JP2011091039A2011-05-06
JP2010009898A2010-01-14
JP2009277395A2009-11-26
JP2004071405A2004-03-04
JPH1027626A1998-01-27
JP2000012090A2000-01-14
JPH1069922A1998-03-10
JP2007273166A2007-10-18
JP2008511528A2008-04-17
JP2006253081A2006-09-21
JP2007227090A2007-09-06
JP2010153258A2010-07-08
JP2007323958A2007-12-13
JP2009245762A2009-10-22
Attorney, Agent or Firm:
Tetsushi Yokoyama
Katsuo Naruse
Tomohiro Nakamura



 
Previous Patent: 光電変換装置とその製造方法および光電変換モジュ−ル

Next Patent: AUTOMOBILE CHARGING DEVICE