Title:
リチウム二次電池用負極およびその製造方法、ならびにリチウム二次電池用負極を備えたリチウム二次電池
Document Type and Number:
Japanese Patent JP4027966
Kind Code:
B2
Abstract:
A negative electrode 100 for a lithium secondary battery includes: a current collector 11; a negative-electrode active material body 12 supported by the current collector 11, the negative-electrode active material body 12 having a chemical composition represented as SiO x (0.1‰¦ x ‰¦1.2); and a covering layer 14 formed on the negative-electrode active material body 12, the covering layer 14 having a chemical composition composed of silicon dioxide. The covering layer 12 has a thickness which is greater than 1 nm and no more than 10 nm.
Inventors:
Kazuya Iwamoto
Application Number:
JP2007526091A
Publication Date:
December 26, 2007
Filing Date:
January 24, 2007
Export Citation:
Assignee:
Matsushita Electric Industrial Co., Ltd
International Classes:
H01M4/13; B82Y99/00; H01M4/139; H01M4/36; H01M4/48; H01M4/70
Domestic Patent References:
| JP2005085717A | ||||
| JP2004071542A | ||||
| JP2004349237A | ||||
| JP2006107912A |
Other References:
J.Yang,et.al,SiOx-based anodes for secondary lithium batteries,Solid State Ionics,2002年,152-153,p.125-129
Attorney, Agent or Firm:
Seiji Okuda