US 11,791,499 B2
Non-aqueous electrolyte solution and non-aqueous electrolyte secondary battery employing the same
Shuhei Sawa, Inashiki-gun (JP); Minoru Kotato, Yokkaichi (JP); Kunihisa Shima, Yokkaichi (JP); Yasuyuki Shigematsu, Yokohama (JP); Masamichi Onuki, Yokohama (JP); and Kanako Takiguchi, Inashiki-gun (JP)
Assigned to MITSUBISHI CHEMICAL CORPORATION, Tokyo (JP); and MU IONIC SOLUTIONS CORPORATION, Tokyo (JP)
Filed by MITSUBISHI CHEMICAL CORPORATION, Tokyo (JP); and MU IONIC SOLUTIONS CORPORATION, Tokyo (JP)
Filed on Nov. 12, 2021, as Appl. No. 17/454,738.
Application 16/590,623 is a division of application No. 14/991,185, filed on Jan. 8, 2016, granted, now 10,476,106, issued on Nov. 12, 2019.
Application 14/991,185 is a division of application No. 13/964,195, filed on Aug. 12, 2013, granted, now 9,923,238, issued on Mar. 20, 2018.
Application 17/454,738 is a continuation of application No. 16/590,623, filed on Oct. 2, 2019, granted, now 11,205,802.
Application 13/964,195 is a continuation of application No. PCT/JP2012/051635, filed on Jan. 26, 2012.
Claims priority of application No. 2011-027671 (JP), filed on Feb. 10, 2011; application No. 2011-031074 (JP), filed on Feb. 16, 2011; application No. 2011-169549 (JP), filed on Aug. 2, 2011; and application No. 2011-192138 (JP), filed on Sep. 2, 2011.
Prior Publication US 2022/0069351 A1, Mar. 3, 2022
Int. Cl. H01M 10/0567 (2010.01); H01M 4/587 (2010.01); H01M 10/0525 (2010.01); H01M 10/42 (2006.01); H01M 10/0568 (2010.01); H01M 10/0569 (2010.01)
CPC H01M 10/0567 (2013.01) [H01M 4/587 (2013.01); H01M 10/0525 (2013.01); H01M 10/0568 (2013.01); H01M 10/0569 (2013.01); H01M 10/4235 (2013.01); H01M 2300/0025 (2013.01)] 14 Claims
 
1. A non-aqueous electrolyte secondary battery, comprising:
a positive electrode capable of the absorbing and releasing of a lithium ion;
a negative electrode capable of the absorbing and releasing of the lithium ion; and
a non-aqueous electrolyte solution containing a non-aqueous solvent and an electrolyte dissolved in the non-aqueous solvent, wherein
the negative electrode comprises a carbonaceous material,
the non-aqueous electrolyte solution further comprises, in addition to the electrolyte and the non-aqueous solvent:
(A) a compound having at least two isocyanate groups per molecule; and
(B) a monofluorophosphate salt or a difluorophosphate salt, at from 0.001 mass % or more to 5 mass % or less in the non-aqueous electrolyte solution, and
a weight ratio between the compound having at least two isocyanate groups per molecule and the monofluorophosphate salt or the difluorophosphate salt is in the range from 1:500 to 300:1.