SECONDARY BATTERY

WIPO Patent Application WO/2018/163294

A1

[Problem] To provide a secondary battery capable of suppressing the occurrence of wrinkles in a negative electrode, said wrinkles having, as a start point, the boundary between a non-active material region and an active material region. [Solution] This secondary battery is provided with a negative electrode having a negative electrode collector 32, in which a negative electrode active material layer having a silicon-containing negative electrode active material is disposed. The negative electrode collector 32 has: an active material region 40, in which the negative electrode active material layer is disposed; a non-active material region 46, in which the negative electrode active material layer is not disposed; and a slit 36 extending from the non-active material region 46 to the active material region 40.

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MUROYA YUJI (JP)
NARUOKA YOSHINORI (JP)

PCT/JP2017/009063

September 13, 2018

March 07, 2017

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NISSAN MOTOR (JP)
RENAULT SAS (FR)

H01M4/70; H01M10/0585; H01M10/04

WO2011125325A1	2011-10-13
WO2001029918A1	2001-04-26

JP2015222633A	2015-12-10
JP2014167890A	2014-09-11
JP2013157283A	2013-08-15

See also references of EP 3595075A4

HATTA & ASSOCIATES (JP)

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