Title:
非水系電解液及び非水系二次電池
Document Type and Number:
Japanese Patent JP6767151
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a nonaqueous electrolyte superior in cycle performance, which includes acetonitrile superior in the balance between a viscosity and a relative dielectric constant, and a fluorine-containing inorganic lithium salt, which is allowed to exhibit a superior load characteristic by suppressing the production of a complex cation including a transition metal and the acetonitrile, and which is arranged so as to be able to suppress the increase in internal resistance in the case of repeating charge and discharge cycles.SOLUTION: A nonaqueous electrolyte comprises: a nonaqueous solvent including 20-100 vol.% of acetonitrile; a fluorine-containing inorganic lithium salt; and a compound having a structure which satisfies the requirements described in the items #1-6 below. Item #1, the compound has a 5-membered ring. Item #2, the compound has two or more N atoms in the 5-membered ring. Item #3, the compound has two or more double bonds in the 5-membered ring. Item #4, of the two or more double bonds, one or more double bonds are one with an N atom. Item #5, in the 5-membered ring, no H atom is bonded to the N atom. Item #6, the compound does not have a cyclic structure that binds to two or more atoms in the 5-membered ring.SELECTED DRAWING: None
Inventors:
Naoki Matsuoka
Sawako Nishina
Sawako Nishina
Application Number:
JP2016079588A
Publication Date:
October 14, 2020
Filing Date:
April 12, 2016
Export Citation:
Assignee:
ASAHI KASEI KABUSHIKI KAISHA
International Classes:
H01M10/0569; H01M4/131; H01M10/052; H01M10/0567; H01M10/0568
Domestic Patent References:
| JP2014241198A | ||||
| JP2004207451A | ||||
| JP2007109698A | ||||
| JP2003257476A |
Foreign References:
| WO2015178364A1 | ||||
| WO2012057311A1 | ||||
| WO2013062056A1 |
Attorney, Agent or Firm:
Atsushi Aoki
Shinji Mitsuhashi
Kazuhiro Nakamura
Toko Saito
Shunsuke Mima
Shinji Mitsuhashi
Kazuhiro Nakamura
Toko Saito
Shunsuke Mima