NONAQUEOUS ELECTROLYTE SECONDARY BATTERY

Title:

NONAQUEOUS ELECTROLYTE SECONDARY BATTERY

Document Type and Number:

WIPO Patent Application WO/2023/234099

Kind Code:

A1

Abstract:

The present invention provides a nonaqueous electrolyte secondary battery which has high capacity and excellent durability. A nonaqueous electrolyte secondary battery according to one embodiment of the present disclosure is provided with: an electrode body that comprises a first electrode and a second electrode, which have different polarities from each other; an electrolyte solution; and an outer package which contains the electrode body and the electrolyte solution. The first electrode has a rectangular shape, and comprises a collector and a mixture layer that is formed on the surface of the collector; the mixture layer has a first region, a second region and a third region sequentially from one end toward the other end in the short-side direction of the first electrode; the respective widths of the first region and the third region in the short-side direction of the first electrode are 1% to 20% of the length of the first electrode in the short-side direction; the mixture layer contains an electrolyte salt; and the respective contents of the electrolyte salt in the first region and the third region are higher than the content of the electrolyte salt in the second region.

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Inventors:

ICHIKAWA YUTA
MAEKAWA MASANORI
SHINOMIYA TAKUYA
FUJIMOTO HIROYUKI

Application Number:

PCT/JP2023/018933

Publication Date:

December 07, 2023

Filing Date:

May 22, 2023

Export Citation:

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Assignee:

PANASONIC ENERGY CO LTD (JP)

International Classes:

H01M10/0566; H01M4/13; H01M4/62; H01M10/052; H01M10/0587

Domestic Patent References:

WO2018025469A1

2018-02-08

Foreign References:

JP2013235795A	2013-11-21
JP2015128052A	2015-07-09
JP2011100750A	2011-05-19
JP2019029184A	2019-02-21
JP2011192561A	2011-09-29
JP2005050756A	2005-02-24

Attorney, Agent or Firm:

YKI INTELLECTUAL PROPERTY ATTORNEYS (JP)

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