US 12,136,703 B2
Lithium-ion secondary battery
Takumi Hiasa, Kyoto (JP); and Kazunari Motohashi, Kyoto (JP)
Assigned to Murata Manufacturing Co., Ltd., Kyoto (JP)
Filed by MURATA MANUFACTURING CO., LTD., Kyoto (JP)
Filed on Oct. 8, 2021, as Appl. No. 17/497,136.
Application 17/497,136 is a continuation of application No. PCT/JP2020/015608, filed on Apr. 7, 2020.
Claims priority of application No. 2019-074934 (JP), filed on Apr. 10, 2019.
Prior Publication US 2022/0029201 A1, Jan. 27, 2022
Int. Cl. H01M 10/0568 (2010.01); H01M 4/36 (2006.01); H01M 10/0525 (2010.01); H01M 10/0563 (2010.01); H01M 4/02 (2006.01)
CPC H01M 10/0568 (2013.01) [H01M 4/362 (2013.01); H01M 10/0525 (2013.01); H01M 10/0563 (2013.01); H01M 2004/028 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A lithium-ion secondary battery comprising:
a positive electrode that includes a positive electrode active material;
a negative electrode; and
an electrolytic solution that includes a cyclic sulfuric acid ester compound represented by Formula (1), a cyclic ether compound represented by Formula (2), and a chain alkyl dinitrile compound represented by Formula (3),
wherein a ratio of a weight in milligrams of the cyclic sulfuric acid ester compound to a weight in grams of the positive electrode active material is from 0.01 to 2,

OG Complex Work Unit Chemistry
wherein
each of R1 to R6 represents one of a hydrogen group and a monovalent hydrocarbon group, and
n1 is an integer of 0 or greater,

OG Complex Work Unit Chemistry
wherein
each of R7 to R12 represents one of a hydrogen group and a monovalent hydrocarbon group, and
each of n2 and n3 is an integer of 1 or greater, and

OG Complex Work Unit Chemistry
wherein
each of R13 to R16 represents one of a hydrogen group and a monovalent hydrocarbon group, and
n4 is an integer of 0 or greater.