Title:
リチウム二次電池用負極の製造に用いる成膜用材料、リチウム二次電池用負極の製造方法及びリチウム二次電池用負極
Document Type and Number:
Japanese Patent JP3984937
Kind Code:
B2
Abstract:
To provide a deposition material used for manufacture of a lithium secondary battery negative electrode which can improve initial efficiency without the degradation of an initial charge capacity and at the same time can improve cycle characteristics, and a manufacturing method of the lithium secondary battery negative electrode.
An SiO film as a negative electrode active material layer is formed by vacuum vapor deposition on a surface of a current collector used for a negative electrode of lithium secondary battery. SiO deposits having a weight reduction rate in which a rattler test (rattler value) are 1.0% or less are used as a vapor deposition source.
COPYRIGHT: (C)2005,JPO&NCIPI
Inventors:
Yoshitake Natsume
Tadashi Ogasawara
Kazuomi Azuma
Tadashi Ogasawara
Kazuomi Azuma
Application Number:
JP2003297443A
Publication Date:
October 03, 2007
Filing Date:
August 21, 2003
Export Citation:
Assignee:
Sumitomo Titanium Co., Ltd.
International Classes:
C23C14/24; C23C14/34; H01M4/13; H01M4/139; H01M4/48; H01M10/05
Domestic Patent References:
| JP2002373653A | ||||
| JP2001226112A | ||||
| JP1050312A | ||||
| JP200242809A |
Attorney, Agent or Firm:
Takahiko Yanagita