Invention Grant
US07824801B2 Negative electrode for lithium ion secondary battery, production method thereof and lithium ion secondary battery comprising the same
有权
锂离子二次电池用负极及其制造方法以及包含该锂离子二次电池的锂离子二次电池
- Patent Title: Negative electrode for lithium ion secondary battery, production method thereof and lithium ion secondary battery comprising the same
- Patent Title (中): 锂离子二次电池用负极及其制造方法以及包含该锂离子二次电池的锂离子二次电池
-
Application No.: US11301027Application Date: 2005-12-13
-
Publication No.: US07824801B2Publication Date: 2010-11-02
- Inventor: Yasutaka Kogetsu , Kazuyoshi Honda , Toshitada Sato , Hiroshi Yoshizawa
- Applicant: Yasutaka Kogetsu , Kazuyoshi Honda , Toshitada Sato , Hiroshi Yoshizawa
- Applicant Address: JP Osaka
- Assignee: Panasonic Corporation
- Current Assignee: Panasonic Corporation
- Current Assignee Address: JP Osaka
- Agency: McDermott Will & Emery LLP
- Priority: JP2004-364342 20041216
- Main IPC: H01M4/58
- IPC: H01M4/58 ; H01M4/48

Abstract:
A negative electrode for a lithium ion secondary battery including a current collector and an active material layer carried on the current collector, wherein the active material layer includes a first layer and a second layer alternately laminated in a thickness direction of the active material layer, and wherein the first layer includes silicon or silicon and a small amount of oxygen and the second layer includes silicon and a larger amount of oxygen than the first layer. With the use of the negative electrode, it is possible to provide a high capacity lithium ion secondary battery having excellent high rate charge/discharge characteristics and superior cycle characteristics.
Public/Granted literature
Information query