Title:
POSITIVE ELECTRODE ACTIVE MATERIAL FOR LITHIUM-ION BATTERY AND LITHIUM-ION BATTERY
Document Type and Number:
WIPO Patent Application WO/2011/122663
Kind Code:
A1
Abstract:
In order to determine causes that affect voltage drop and obtain high output, and to provide a lithium-ion battery which has minimal voltage drop when being recharged or stored at high temperatures, disclosed is a lithium-ion battery characterized in that the content of iron contained in a positive electrode active material (measured with an ICP spectrometer) is at least 10 ppm, and magnetic materials having a size of 0.70 times or greater than the thickness of a separator layer are effectively not present.
Inventors:
KAGEI SHINYA (JP)
MIYANOHARA KEISUKE (JP)
HATA YOSHIMI (JP)
OCHI YASUHIRO (JP)
MIYANOHARA KEISUKE (JP)
HATA YOSHIMI (JP)
OCHI YASUHIRO (JP)
Application Number:
PCT/JP2011/058037
Publication Date:
October 06, 2011
Filing Date:
March 30, 2011
Export Citation:
Assignee:
MITSUI MINING & SMELTING CO (JP)
KAGEI SHINYA (JP)
MIYANOHARA KEISUKE (JP)
HATA YOSHIMI (JP)
OCHI YASUHIRO (JP)
KAGEI SHINYA (JP)
MIYANOHARA KEISUKE (JP)
HATA YOSHIMI (JP)
OCHI YASUHIRO (JP)
International Classes:
H01M4/485; H01M4/131; H01M4/136; H01M4/505; H01M4/525; H01M10/052
Domestic Patent References:
| WO2009078159A1 | 2009-06-25 |
Foreign References:
| JP2005135849A | 2005-05-26 | |||
| JP2003014670A | 2003-01-15 | |||
| JPH05307964A | 1993-11-19 | |||
| JP2008247646A | 2008-10-16 | |||
| JP2002358952A | 2002-12-13 | |||
| JP2005158643A | 2005-06-16 |
Attorney, Agent or Firm:
TAKEUCHI, ICHIZAWA & ASSOCIATES (JP)
Patent business corporation Takeuchi and an Ichizawa international patent firm (JP)
Patent business corporation Takeuchi and an Ichizawa international patent firm (JP)
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Claims: