Title:
NEGATIVE ELECTRODE FOR NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY
Document Type and Number:
WIPO Patent Application WO/2008/001533
Kind Code:
A1
Abstract:
A negative electrode (10) for use in a non-aqueous electrolyte secondary battery
comprises an active material layer (12) containing a particle (12a) of an active
material. At least a part of the surface of the particle (12a) is coated with a metal
material (13) having a poor ability of forming a lithium compound. A void is formed
between the particles (12a) that are coated with the metal material (13). The
metal material (13) has an average crystallite diameter of 0.01 to 1 μm
and covers 5 to 95% of the surface of the particle (12a). Preferably, the metal
material covers the surface of the particle in the thickness of 0.05 to 2 μm
on average.
Inventors:
SAKAGUCHI YOSHIKI (JP)
MATSUSHIMA HIDEAKI (JP)
MATSUSHIMA HIDEAKI (JP)
Application Number:
PCT/JP2007/057888
Publication Date:
January 03, 2008
Filing Date:
April 10, 2007
Export Citation:
Assignee:
MITSUI MINING & SMELTING CO (JP)
SAKAGUCHI YOSHIKI (JP)
MATSUSHIMA HIDEAKI (JP)
SAKAGUCHI YOSHIKI (JP)
MATSUSHIMA HIDEAKI (JP)
International Classes:
H01M4/38; C25D7/00; H01M4/02; H01M4/04; H01M4/13; H01M4/134; H01M4/1395; H01M4/36; H01M4/62; H01M10/05; H01M10/0566
Foreign References:
| JPH11242954A | 1999-09-07 | |||
| JP2004241329A | 2004-08-26 | |||
| JP2004296412A | 2004-10-21 | |||
| JP2005285581A | 2005-10-13 |
Attorney, Agent or Firm:
HATORI, Osamu (8-6 Akasaka 1-chom, Minato-ku Tokyo 52, JP)
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