Title:
リチウムイオン電池用正極活物質材料及びリチウムイオン電池
Document Type and Number:
Japanese Patent JP5140193
Kind Code:
B2
Abstract:
Provided is a lithium ion battery wherein the content of an iron element contained in a positive electrode active material (measured with an ICP emission spectrophotometer) is 10 ppm or more, and magnetic materials having a size of 0.70 times or greater than the thickness of a separator layer are substantially not included in order to provide a lithium ion battery which has small voltage drop during a charge state or under storage at high temperatures.
Inventors:
Shinya Kagei
Keisuke Miyanohara
Yoshimi Hata
Yasuhiro Ochi
Keisuke Miyanohara
Yoshimi Hata
Yasuhiro Ochi
Application Number:
JP2011545519A
Publication Date:
February 06, 2013
Filing Date:
March 30, 2011
Export Citation:
Assignee:
Mitsui Mining & Smelting Co., Ltd.
International Classes:
H01M4/131; H01M4/36; H01M4/505; H01M4/525; H01M10/052
Domestic Patent References:
| JP2005135849A | 2005-05-26 | |||
| JP2003014670A | 2003-01-15 | |||
| JPH05307964A | 1993-11-19 | |||
| JP2008247648A | 2008-10-16 | |||
| JP2003119026A | 2003-04-23 | |||
| JP2004259518A | 2004-09-16 | |||
| JPH05307964A | 1993-11-19 | |||
| JP2007149400A | 2007-06-14 | |||
| JP2002358952A | 2002-12-13 |
Attorney, Agent or Firm:
Takeuchi/Ichizawa International Patent Office