Invention Grant
- Patent Title: Battery electrode and use thereof
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Application No.: US13880395Application Date: 2010-10-21
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Publication No.: US09705126B2Publication Date: 2017-07-11
- Inventor: Koji Takahata
- Applicant: Koji Takahata
- Applicant Address: JP Toyota-shi, Aichi
- Assignee: Toyota Jidosha Kabushiki Kaisha
- Current Assignee: Toyota Jidosha Kabushiki Kaisha
- Current Assignee Address: JP Toyota-shi, Aichi
- Agency: Finnegan, Henderson, Farabow, Garrett & Dunner, LLP
- International Application: PCT/JP2010/068585 WO 20101021
- International Announcement: WO2012/053087 WO 20120426
- Main IPC: H01M4/13
- IPC: H01M4/13 ; H01M4/58 ; H01M4/131 ; H01G11/28 ; H01M4/1391 ; H01M4/66

Abstract:
An objective is to reduce the sheet resistance and gas evolution in a battery electrode comprising a conductive intermediate layer capable of reducing or shutting off a current when overcharged. A battery electrode (12) comprises a conductive intermediate layer (123) being placed between a current collector (122) and an active layer (124) while comprising conductive particles (50) and a binder (60). The mass proportion of conductive particles (50) is equal to or larger than the mass proportion of the binder (60). Conductive particles (50) has a size distribution that exhibits a first peak with the maximum at a first particle diameter value and a second peak with the maximum at a second particle diameter value larger than the first particle diameter value. The intermediate layer (123) contains 10% to 60% by mass of conductive particles (52) having particle diameters that belong to the second peak.
Public/Granted literature
- US20130209889A1 BATTERY ELECTRODE AND USE THEREOF Public/Granted day:2013-08-15
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