US 12,269,832 B2
Lithium borate compound, additive for lithium secondary battery, non-aqueous electrolyte solution for lithium secondary battery, lithium secondary battery precursor, and lithium secondary battery and method of producing the same
Han Zhang, Funabashi (JP); Yusuke Shimizu, Ichihara (JP); Satoko Fujiyama, Kisarazu (JP); Kenichi Goto, Tokyo (JP); and Shigeru Mio, Chiba (JP)
Assigned to MITSUI CHEMICALS, INC., Tokyo (JP)
Appl. No. 17/262,297
Filed by MITSUI CHEMICALS, INC., Tokyo (JP)
PCT Filed Jul. 17, 2019, PCT No. PCT/JP2019/028087
§ 371(c)(1), (2) Date Jan. 22, 2021,
PCT Pub. No. WO2020/022142, PCT Pub. Date Jan. 30, 2020.
Claims priority of application No. 2018-140561 (JP), filed on Jul. 26, 2018; application No. 2019-030029 (JP), filed on Feb. 22, 2019; application No. 2019-030031 (JP), filed on Feb. 22, 2019; and application No. 2019-030033 (JP), filed on Feb. 22, 2019.
Prior Publication US 2021/0253602 A1, Aug. 19, 2021
Int. Cl. C07F 1/02 (2006.01); C07F 5/04 (2006.01); H01M 4/505 (2010.01); H01M 4/525 (2010.01); H01M 10/0525 (2010.01); H01M 10/0567 (2010.01); H01M 4/02 (2006.01)
CPC C07F 1/02 (2013.01) [C07F 5/04 (2013.01); H01M 4/505 (2013.01); H01M 4/525 (2013.01); H01M 10/0525 (2013.01); H01M 10/0567 (2013.01); H01M 2004/028 (2013.01); H01M 2300/0025 (2013.01)] 14 Claims
OG exemplary drawing
 
13. A lithium secondary battery, comprising:
a casing, and
a positive electrode, a negative electrode, a separator, and an electrolyte solution housed in the casing, wherein:
the positive electrode is a positive electrode capable of absorbing and releasing lithium ions,
the negative electrode is a negative electrode capable of absorbing and releasing lithium ions,
the electrolyte solution is a non-aqueous electrolyte solution containing an electrolyte that is a lithium salt containing fluorine and a non-aqueous solvent,
a negative electrode film containing an organic component and an inorganic component, derived from a lithium borate compound represented by the following Formula (I) and the electrolyte, is formed on at least a portion of a surface of the negative electrode, and
a positive electrode film containing an inorganic component, derived from a lithium borate compound represented by the following Formula (I) and the electrolyte, is formed on at least a portion of a surface of the positive electrode:

OG Complex Work Unit Chemistry
wherein, in Formula (I), R represents a single bond or an alkylene group having from 1 to 4 carbon atoms.