US 12,394,794 B2
Positive electrode active material, high-temperature operation type lithium-ion polymer secondary battery, high-temperature operation type lithium ion inorganic all-solid-state secondary battery
Kouji Oono, Narashino (JP); Satoru Oshitari, Funabashi (JP); and Shinichi Tanaka, Sakura (JP)
Assigned to Sumitomo Metal Mining Co., Ltd., Tokyo (JP)
Filed by Sumitomo Metal Mining Co., Ltd., Tokyo (JP)
Filed on Mar. 28, 2022, as Appl. No. 17/706,231.
Claims priority of application No. 2021-140347 (JP), filed on Aug. 30, 2021.
Prior Publication US 2023/0077307 A1, Mar. 9, 2023
Int. Cl. H01M 4/38 (2006.01); H01M 4/02 (2006.01); H01M 4/48 (2010.01); H01M 4/50 (2010.01); H01M 4/52 (2010.01); H01M 4/62 (2006.01); H01M 10/0525 (2010.01); H01M 10/0562 (2010.01); H01M 10/0565 (2010.01)
CPC H01M 4/62 (2013.01) [H01M 4/382 (2013.01); H01M 4/483 (2013.01); H01M 4/502 (2013.01); H01M 4/523 (2013.01); H01M 10/0525 (2013.01); H01M 10/0562 (2013.01); H01M 10/0565 (2013.01); H01M 2004/021 (2013.01); H01M 2300/0068 (2013.01); H01M 2300/0077 (2013.01); H01M 2300/0082 (2013.01)] 6 Claims
 
1. A high-temperature operation type lithium-ion polymer secondary battery comprising:
a positive electrode containing a positive electrode mixture layer that is used in a high-temperature operation type lithium ion solid secondary battery,
wherein the positive electrode mixture layer comprises oxide particles; an ion conductive polymer electrolyte or an inorganic solid electrolyte; and a conductive auxiliary agent,
wherein the oxide particles are made of a compound represented by a general formula MyOz
wherein M is at least one selected from the group consisting of Sc, Ti, Mn, Fe, Co, Ni, and Cu, 1≤y≤3, and 1≤z≤4, wherein y is 3 and z is 4 when M is Mn, and
wherein an average particle diameter of the oxide particles is 14 μm to 50 μm;
a negative electrode containing lithium; and
an ion conductive polymer electrolyte located between the positive electrode and the negative electrode.
 
4. A high-temperature operation type lithium ion inorganic all-solid-state secondary battery comprising:
a positive electrode containing a positive electrode mixture layer that is used in a high-temperature operation type lithium ion solid secondary battery,
wherein the positive electrode mixture layer comprises oxide particles; an ion conductive polymer electrolyte or an inorganic solid electrolyte; and a conductive auxiliary agent,
wherein the oxide particles are made of a compound represented by a general formula MyOz
wherein M is at least one selected from the group consisting of Sc, Ti, Mn, Fe, Co, Ni, and Cu, 1≤y≤3, and 1≤z≤4, wherein y is 3 and z is 4 when M is Mn, and
wherein an average particle diameter of the oxide particles is 14 μm to 50 μm;
a negative electrode containing lithium; and
an inorganic solid electrolyte located between the positive electrode and the negative electrode.