NONAQUEOUS-ELECTROLYTE SECONDARY CELL

WIPO Patent Application WO/2017/212597

A1

[Problem] To provide, in a nonaqueous-electrolyte secondary cell having a capacity and size conceived for high energy density, a means that can minimize the incidence of internal short circuiting in a power generation element when the cell has been damaged from the exterior. [Solution] A nonaqueous-electrolyte secondary cell having a power generation element that includes: a positive electrode obtained by forming, on the surface of a positive-electrode current collector, a positive-electrode active-material layer including a positive-electrode active material; a negative electrode obtained by forming, on the surface of a negative-electrode current collector, a negative-electrode active-material layer that includes a negative-electrode active material; and a separator that includes a plastic film, the volume energy density of the nonaqueous-electrolyte secondary cell being 350 Wh/L or greater. Tensile yield strength at normal temperature is 14 MPa or less, tensile elongation at break at normal temperature is 100% or more, and at least one direction at which the heat shrinkage under heating at 150°C for one hour is 10% or less exists in the planar direction of the separator.

HIRAI TAMAKI (JP)
FUJII TAKAYUKI (JP)
ISHIMOTO SEIJI (JP)
KAWAMURA FUMIHIRO (JP)

PCT/JP2016/067139

December 14, 2017

June 08, 2016

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NISSAN MOTOR (JP)

H01M10/058; H01M50/119; H01M50/129; H01M50/417; H01M50/457; H01M50/489; H01M50/491; H01M50/494; H01M50/121; H01M50/133

WO2016031493A1

2016-03-03

JP2010202828A	2010-09-16
JP2015008124A	2015-01-15
JPH08138644A	1996-05-31
JP2015022893A	2015-02-02
JP2011105588A	2011-06-02
JP2013139652A	2013-07-18
JP2014240471A	2014-12-25

See also references of EP 3471169A4

HATTA & ASSOCIATES (JP)

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