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.: US14729457Application Date: 2015-06-03
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Publication No.: US09508979B2Publication Date: 2016-11-29
- 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: Chip Law Group
- Priority: JP2012-082195 20120330
- Main IPC: H01M4/133
- IPC: H01M4/133 ; H01M4/64 ; H01M4/02 ; H01M4/70 ; H01M10/44 ; B60L11/18 ; H01M4/583 ; H01M4/62

Abstract:
A battery comprising a positive electrode; a negative electrode including a negative electrode active material layer that is formed on at least one surface of a negative electrode collector; and an electrolyte, wherein in the negative electrode active material layer from the negative electrode collector up to ½ of a layer thickness in a surface direction of the negative electrode active material layer, a pore volume ratio expressed as (pore volume B/pore volume A) that is a ratio of a pore volume A (ml/g) in a range of 0.001 μm or more and 0.4 μm or less of a pore diameter measured by a mercury porosimeter and a pore volume B (ml/g) in a range of 0.4 μm or more and 10 μm or less of the pore diameter is 1.4 or more and 3.4 or less.
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