Additive for non-aqueous electrolyte solution, non-aqueous electrolyte solution, and non-aqueous electrolyte solution battery

Patent metadata

Field	Value
Publication number	US-11757130-B2
Application number	US-201816645577-A
Country	US
Kind code	B2
Filing date	Sep 12, 2018
Priority date	Sep 12, 2017
Publication date	Sep 12, 2023
Grant date	Sep 12, 2023

Abstract

An additive for a non-aqueous electrolyte solution that can exhibit high-temperature cycle properties at 50° C. or more and low-temperature output properties at −20° C. or less in a well-balanced manner for a non-aqueous electrolyte solution battery. The additive for a non-aqueous electrolyte solution is represented by formula [1],wherein Z1, Z2, Z3, Z4, Mp+ and p are as defined in the specification.

First claim

What is claimed is:

1. An additive for a non-aqueous electrolyte solution represented by formula [1]:

wherein in formula [1], the anion is selected from the group consisting of:

M p+ is a proton, a metal cation, or an onium cation; and
p is a cation valence.

2. The additive for a non-aqueous electrolyte solution according to claim 1 , wherein M p+ is at least one cation selected from the group consisting of a proton, a lithium ion, a sodium ion, a potassium ion, a tetraalkylammonium ion, and a tetraalkylphosphonium ion.

3. A non-aqueous electrolyte solution comprising a non-aqueous solvent, a solute, and the additive for a non-aqueous electrolyte solution according to claim 1 .

4. The non-aqueous electrolyte solution according to claim 3 , wherein a content of the additive for a non-aqueous electrolyte solution is within a range of 0.005 to 5.0 mass % based on the total amount of the non-aqueous solvent, the solute, and the additive for a non-aqueous electrolyte solution.

5. The non-aqueous electrolyte solution according to claim 3 , wherein the solute is at least one selected from the group consisting of LiPF 6 , LiBF 4 , LiPF 2 (C 2 O 4 ) 2 , LiPF 4 (C 2 O 4 ) 2 , LiP(C 2 O 4 ) 3 , LiBF 2 (C 2 O 4 ), LiB(C 2 O 4 ) 2 , LiPO 2 F 2 , LiN(POF 2 ) 2 , LiN(FSO 2 )(POF 2 ), LiN(FSO 2 )(POF(OCH 2 C≡CH)), LiN(FSO 2 ) 2 , LiN(CF 3 SO 2 ) 2 , LiN(CF 3 SO 2 )(FSO 2 ), LiSO 3 F, NaPF 6 , NaBF 4 , NaPF 2 (C 2 O 4 ) 2 , NaPF 4 (C 2 O 4 ), NaP(C 2 O 4 ) 3 , NaBF 2 (C 2 O 4 ), NaB(C 2 O 4 ) 2 , NaPO 2 F 2 , NaN(POF 2 ) 2 , NaN(FSO 2 )(POF 2 ), NaN(FSO 2 )(POF(OCH 2 C≡CH)), NaN(FSO 2 ) 2 , NaN(FSO 2 )(FCO), NaN(CF 3 SO 2 ) 2 , NaN(CF 3 SO 2 )(FSO 2 ), and NaSO 3 F.

6. The non-aqueous electrolyte solution according to claim 3 , further comprising at least one selected from the group consisting of vinylene carbonate, fluoroethylene carbonate, 1,3,2-dioxathiolane 2,2-dioxide, tetravinylsilane, and 1,3-propanesultone.

7. The non-aqueous electrolyte solution according to claim 3 , wherein the non-aqueous solvent is at least one selected from the group consisting of a cyclic carbonate, a chain carbonate, a cyclic ester, a chain ester, a cyclic ether, a chain ether, a sulfone compound, a sulfoxide compound, and an ionic liquid.

8. A non-aqueous electrolyte solution battery at least comprising a positive electrode, a negative electrode, and the non-aqueous electrolyte solution according to claim 3 .

Assignees

• Central Glass Co Ltd

Inventors

• Morinaka Takayoshi
• Iwasaki Susumu
• Nakahara Keita
• Kubo Makoto
• Takahashi Mikihiro

Classifications

• H01M10/0525 Primary

  Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries · CPC title

• H01M10/0567 Primary

  characterised by the additives · CPC title

• H01M10/054

  Accumulators with insertion or intercalation of metals other than lithium, e.g. with magnesium or aluminium · CPC title

• H01M10/0568

  characterised by the solutes · CPC title

• H01M10/0569

  characterised by the solvents · CPC title