Title:
LITHIUM ION BATTERY POSITIVE ELECTRODE ACTIVE MATERIAL
Document Type and Number:
WIPO Patent Application WO/2016/052407
Kind Code:
A1
Abstract:
A lithium ion battery positive electrode active material is provided which can suppress elution of metal ions and changes in the crystal structure during charging and discharging, and which can achieve high stability during charging and discharging with minimal degradation due to the passage of time while in use. This lithium ion battery positive electrode active material has a coating layer comprising amorphous carbon on the surface of a positive electrode active material, the amorphous carbon being derived from carbon contained by an oxazine resin. The G-band and D-band peak intensity ratio is 1.0 or greater when measured with Raman spectroscopy, the average film thickness of the coating layer is 100nm or less, and the coefficient of variance (CV value) of the film thickness of the coating layer is 10% or less.
Inventors:
SUN REN-DE (JP)
NOZATO SHOJI (JP)
NAKASUGA AKIRA (JP)
NAKAMURA MASANORI (JP)
NOZATO SHOJI (JP)
NAKASUGA AKIRA (JP)
NAKAMURA MASANORI (JP)
Application Number:
PCT/JP2015/077330
Publication Date:
April 07, 2016
Filing Date:
September 28, 2015
Export Citation:
Assignee:
SEKISUI CHEMICAL CO LTD (JP)
International Classes:
H01M4/525; H01M4/36; H01M4/505; H01M4/58
Domestic Patent References:
| WO2013027674A1 | 2013-02-28 | |||
| WO2010035681A1 | 2010-04-01 | |||
| WO2008120442A1 | 2008-10-09 |
Foreign References:
| JPH1197011A | 1999-04-09 |
Other References:
See also references of EP 3203555A4
Attorney, Agent or Firm:
YASUTOMI & Associates (JP)
Patent business corporation Yasutomi international patent firm (JP)
Patent business corporation Yasutomi international patent firm (JP)
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