NON-AQUEOUS ELECTROLYTE SECONDARY CELL

Title:

NON-AQUEOUS ELECTROLYTE SECONDARY CELL

Document Type and Number:

WIPO Patent Application WO/2019/239652

Kind Code:

A1

Abstract:

A non-aqueous electrolyte secondary cell comprising a negative electrode (12) having a negative electrode collector (40) and a negative electrode active material layer (42) provided on the negative electrode collector (40). The negative electrode active material layer (42) contains graphite particles A and graphite particles B as negative electrode active materials. The graphite particles A have an internal void rate of 5% or less. The graphite particles B have an internal void rate of 8 to 20%. When the negative electrode active material layer 42 is halved in the thickness direction, a region 42b on the half closer to the outer surface contains more graphite particles A than a region 42a on the half closer to the negative electrode collector.

Inventors:

SUGAYA JUNICHI
SHINOMIYA TAKUYA
TASHITA TAKAMITSU
MIZUKOSHI FUMIKAZU
GEJO TSUKASA

Application Number:

PCT/JP2019/009257

Publication Date:

December 19, 2019

Filing Date:

March 08, 2019

Export Citation:

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Assignee:

SANYO ELECTRIC CO (JP)
PANASONIC CORP (JP)

International Classes:

H01M4/133; H01M4/36; H01M4/587

Domestic Patent References:

WO2017111542A1

2017-06-29

Foreign References:

JP2018055952A	2018-04-05
JP2011009203A	2011-01-13
JP2012216537A	2012-11-08
JP2011181427A	2011-09-15
JPH09320600A	1997-12-12
JP2014067638A	2014-04-17

Other References: