US 11,749,806 B2
Positive electrode for nonaqueous electrolyte secondary battery and nonaqueous electrolyte secondary battery
Toshiki Shimada, Hyogo (JP)
Assigned to PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD., Osaka (JP)
Appl. No. 16/638,385
Filed by Panasonic Intellectual Property Management Co., Ltd., Osaka (JP)
PCT Filed Jan. 10, 2019, PCT No. PCT/JP2019/000475
§ 371(c)(1), (2) Date Feb. 11, 2020,
PCT Pub. No. WO2019/146413, PCT Pub. Date Aug. 1, 2019.
Claims priority of application No. 2018-009036 (JP), filed on Jan. 23, 2018.
Prior Publication US 2020/0365908 A1, Nov. 19, 2020
Int. Cl. H01M 4/66 (2006.01); H01M 4/133 (2010.01); H01M 4/505 (2010.01); H01M 4/525 (2010.01); H01M 10/0525 (2010.01); H01M 4/13 (2010.01); H01M 4/02 (2006.01)
CPC H01M 4/666 (2013.01) [H01M 4/13 (2013.01); H01M 4/133 (2013.01); H01M 4/505 (2013.01); H01M 4/525 (2013.01); H01M 4/667 (2013.01); H01M 10/0525 (2013.01); H01M 2004/028 (2013.01)] 4 Claims
OG exemplary drawing
 
1. A positive electrode for a nonaqueous electrolyte secondary battery comprising:
a positive electrode current collector;
a positive electrode mixture layer which is disposed on at least one surface side of the positive electrode current collector; and
an intermediate layer which is interposed between the positive electrode current collector and the positive electrode mixture layer,
wherein the intermediate layer contains insulating inorganic particles having a thermal conductivity of less than 50 W/mK, highly thermal conductive particles having a thermal conductivity of 50 W/mK or more, a thermoplastic resin, and polyvinylidene fluoride;
the content of the inorganic particles is in a range of from 50% to 67% by mass relative to the mass of the intermediate layer;
the content of the highly thermal conductive particles is 10 to 30% by mass relative to the mass of the intermediate layer;
the content of the thermoplastic resin is 5 to 20% by mass relative to the mass of the intermediate layer;
the highly thermal conductive particles are metal particles containing Al; and
the inorganic particles are aluminum oxide.