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Title:
NONAQUEOUS ELECTROLYTE SECONDARY BATTERY
Document Type and Number:
WIPO Patent Application WO/2017/006480
Kind Code:
A1
Abstract:
A nonaqueous electrolyte secondary battery, wherein: an electrolyte is configured to contain an electrolyte salt, a nonaqueous solvent into which the electrolyte salt is able to be dissolved, a first additive selected from among specific oxalate compounds and disulfonic acid ester compounds, and a second additive that has a reduction potential lower than the reduction potential of the first additive and is selected from among vinylene carbonate, fluoroethylene carbonate, vinyl ethylene carbonate, 1, 3-propane sultone, 1, 4-butane sultone, 1, 3-propene sultone, succinonitrile and adiponitrile; and 0.21 ≤ A × L/SSA ≤ 0.69 and 0.51 ≤ B × L/SSA ≤ 1.5 are satisfied, where SSA (m2/g) is the BET specific area of the negative electrode active material, L is the ratio (liquid coefficient) of the electrolyte amount to the total void volume of the positive electrode, the negative electrode and the separator, A (mass%) is the ratio of the addition amount of the first additive to the total amount of the nonaqueous solvent and the electrolyte salt in the electrolyte, and B (mass%) is the ratio of the addition amount of the second additive to the total amount of the nonaqueous solvent and the electrolyte salt in the electrolyte.

Inventors:
OHARA KENJI (JP)
WAKI NORIHISA (JP)
NITTA YOSHIAKI (JP)
AOYAGI MASANORI (JP)
Application Number:
PCT/JP2015/069771
Publication Date:
January 12, 2017
Filing Date:
July 09, 2015
Export Citation:
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Assignee:
NISSAN MOTOR (JP)
International Classes:
H01M10/052; H01M10/0567; H01M50/105; H01M50/437; H01M50/463; H01M50/489
Domestic Patent References:
WO2013128679A12013-09-06
WO2013005502A12013-01-10
Foreign References:
JP2015069810A2015-04-13
JP2006324194A2006-11-30
Other References:
See also references of EP 3322023A4
Attorney, Agent or Firm:
HATTA & ASSOCIATES (JP)
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