Invention Grant
- Patent Title: Negative electrode for non-aqueous electrolyte secondary battery and method for producing the same
- Patent Title (中): 非水电解质二次电池用负极及其制造方法
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Application No.: US11631489Application Date: 2005-09-14
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Publication No.: US07807294B2Publication Date: 2010-10-05
- Inventor: Toshitada Sato , Yasutaka Kogetsu , Hiroshi Yoshizawa
- Applicant: Toshitada Sato , Yasutaka Kogetsu , Hiroshi Yoshizawa
- Applicant Address: JP Osaka
- Assignee: Panasonic Corporation
- Current Assignee: Panasonic Corporation
- Current Assignee Address: JP Osaka
- Agency: McDermott Will & Emery LLP
- Priority: JP2004-306819 20041021
- International Application: PCT/JP2005/016966 WO 20050914
- International Announcement: WO2006/043382 WO 20060427
- Main IPC: H01M6/00
- IPC: H01M6/00 ; H01M4/02 ; H01M4/64 ; H01M4/72

Abstract:
A negative electrode for a non-aqueous electrolyte secondary battery, including: an active material layer capable of electrochemically absorbing and desorbing at least Li; and a current collector sheet that supports the active material layer thereon and that does not react with Li, wherein the active material layer includes a plurality of deposited films or sintered films supported on a surface of the current collector sheet, and each of the deposited films or sintered films is provided with at least one groove formed in a side surface thereof, the groove extending from a top surface side towards the current collector sheet side thereof. It is preferable that the plurality of deposited films or sintered films are arranged in a grid configuration, a staggered grid configuration or a honeycomb configuration on a surface of the current collector sheet. It is preferable that, in a discharged state, the plurality of deposited films or sintered films have an average height of not less than 1 μm and not more than 30 μm.
Public/Granted literature
- US20080020271A1 Negative Electrode for Non-Aqueous Electrolyte Secondary Battery and Method for Producing the Same Public/Granted day:2008-01-24
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