Invention Grant
- Patent Title: Battery, negative electrode for battery, battery pack, electronic apparatus, electric vehicle, electricity storage apparatus and electric power system
- Patent Title (中): 电池,电池用负极,电池组,电子设备,电动车辆,蓄电装置和电力系统
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Application No.: US13850901Application Date: 2013-03-26
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Publication No.: US09054364B2Publication Date: 2015-06-09
- Inventor: Takaaki Matsui , Aya Mashiko , Tadashi Matsushita , Takehiko Ishii
- Applicant: Sony Corporation
- Applicant Address: JP Tokyo
- Assignee: SONY CORPORATION
- Current Assignee: SONY CORPORATION
- Current Assignee Address: JP Tokyo
- Agency: K&L Gates LLP
- Priority: JP2012-082195 20120330
- Main IPC: H01M2/00
- IPC: H01M2/00 ; H01M4/02 ; H01M4/133 ; H01M4/64 ; H01M4/70 ; H01M10/44

Abstract:
A battery includes a positive electrode, a negative electrode where a negative electrode active material layer containing a negative electrode active material containing natural graphite is formed on at least one surface of a negative electrode collector, and an electrolyte. A thickness of the negative electrode active material layer per one surface of the negative electrode collector is 50 μm or more and 100 μm or less, and in the negative electrode active material layer from the negative electrode collector up to ½ of the thickness of the layer in a surface direction of the negative electrode active material layer, an orientation degree A expressed as (peak intensity of carbon 002 face/peak intensity of carbon 110 face) that is a peak intensity ratio of a carbon 002 face and a carbon 110 face measured by an X-ray diffraction is 100 or more and 500 or less.
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