Title:
NEGATIVE ELECTRODE ACTIVE MATERIAL FOR NONAQUEOUS ELECTROLYTE SECONDARY BATTERIES
Document Type and Number:
WIPO Patent Application WO/2013/172378
Kind Code:
A1
Abstract:
For the purpose of proposing a novel negative electrode active material for nonaqueous electrolyte secondary batteries, which has excellent dispersibility even if the particle diameters thereof are relatively small, the present invention proposes a silicon-containing negative electrode active material for nonaqueous electrolyte secondary batteries, which contains negative electrode active material particles that have a D50 of 0.1-5.0 μm based on the volume-based particle size distribution as determined by a laser diffraction/scattering particle size distribution measuring method, each of said negative electrode active material particles having a surface layer that contains oxygen, silicon and carbon on the whole or a part of the active material surface.
Inventors:
INOUE DAISUKE (JP)
TODOROV YANKO MARINOV (JP)
KAGEI SHINYA (JP)
TODOROV YANKO MARINOV (JP)
KAGEI SHINYA (JP)
Application Number:
PCT/JP2013/063535
Publication Date:
November 21, 2013
Filing Date:
May 15, 2013
Export Citation:
Assignee:
MITSUI MINING & SMELTING CO (JP)
International Classes:
H01M4/36; H01M4/134; H01M4/38; H01M4/48; H01M4/62; H01M10/0566
Foreign References:
| JP2005310759A | 2005-11-04 | |||
| JP2011198614A | 2011-10-06 | |||
| JP2006269216A | 2006-10-05 | |||
| JP2010225494A | 2010-10-07 | |||
| JP2011076741A | 2011-04-14 | |||
| JP2013008584A | 2013-01-10 |
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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