NONAQUEOUS ELECTROLYTE SECONDARY BATTERY

WIPO Patent Application WO/2015/156155

A1

The purpose of the present invention is to provide a means that enables a nonaqueous electrolyte secondary battery, which contains a lithium-nickel-manganese-cobalt composite oxide as a positive electrode active material, to exhibit sufficient cycle characteristics. A nonaqueous electrolyte secondary battery according to the present invention comprises a power generation element that is obtained by laminating a positive electrode, which is obtained by forming a positive electrode active material layer containing a lithium-nickel-manganese-cobalt composite oxide on the surface of a collector, an electrolyte layer and a negative electrode. This nonaqueous electrolyte secondary battery satisfies at least one of the following requirements (1)-(4). (1) The value obtained by dividing the direct-current resistance [Ω] of the battery by the thermal resistance [(m·K)/W] in the plane direction of the battery is 0.05 or more. (2) The value obtained by dividing the series resistance [Ω] of the battery by the battery heat capacity [J/K] is 0.080 × 10-6 or more. (3) The value obtained by dividing the capacity [Ah] of the battery by the thermal resistance [(m·K)/W] in the plane direction of the battery is 880 or more. (4) The value obtained by dividing the capacity [Ah] of the battery by the battery heat capacity [J/K] is 0.05000 or more.

SUZUKI YOSUKE (JP)
SAKAMOTO KAZUYUKI (JP)

PCT/JP2015/059729

October 15, 2015

March 27, 2015

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NISSAN MOTOR (JP)

H01M10/052; H01M4/13; H01M4/505; H01M4/525

JP2011238416A	2011-11-24
JP2012109124A	2012-06-07
JP2013054973A	2013-03-21
JP2012109125A	2012-06-07
JP2014007034A	2014-01-16
JP2010198899A	2010-09-09
US20070212609A1	2007-09-13

See also references of EP 3131150A4

HATTA & ASSOCIATES (JP)
Hatta international patent business corporation (JP)

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