Electrolyte salt and electrolyte for electricity storage device, and electricity storage device

Patent metadata

Field	Value
Publication number	US-9738666-B2
Application number	US-201314435834-A
Country	US
Kind code	B2
Filing date	Oct 7, 2013
Priority date	Oct 16, 2012
Publication date	Aug 22, 2017
Grant date	Aug 22, 2017

Abstract

Provided is an electrolyte salt comprising a quaternary ammonium cation indicated by formula (1) and a trimethylsilyl alkanesulfonate anion indicated by formula (2).

(In the formula, R 1 -R 4 each independently indicate a C1-4 alkyl group or an alkoxyalkyl group indicated by —(CH 2 ) n —OR. Any two among R 1 -R 4 can mutually bond and form a ring together with a nitrogen atom to which same have bonded. The remaining two can mutually bond and form a spiro ring having a nitrogen atom as the spiro atom therefor. R indicates a methyl group or an ethyl group. n indicates 1 or 2 and m indicates 2 or 3.)

First claim

The invention claimed is:

1. An electrolyte salt for electrical storage devices, comprising a quaternary ammonium cation of formula (1) below and a trimethylsilyl alkanesulfonate anion of formula (2) below

wherein R 1 to R 4 are each independently an alkyl group of 1 to 4 carbons or an alkoxyalkyl group of the formula —(CH 2 ) n —OR, with the proviso that at least one of R 1 to R 4 is an alkoxyalkyl group of the formula —(CH 2 ) n —OR; R is a methyl group or an ethyl group; n is 1 or 2; and m is 2 or 3.

2. The electrolyte salt for electrical storage devices of claim 1 , wherein n is 2.

3. An electrolyte salt for electrical storage devices, comprising a quaternary ammonium cation of formula (1) below and a trimethylsilyl alkanesulfonate anion of formula (2 ) below

wherein R 1 to R 4 are each independently an alkyl group of 1 to 4 carbons or an alkoxyalkyl group of the formula —(CH 2 ) n —OR, with the proviso that any two of R 1 to R 4 are bonded to each other and form a ring together with the nitrogen atom to which they are bonded and optionally the remaining two are bonded to each other and form a spiro ring with the nitrogen group serving as the spiro atom; R is a methyl group or an ethyl group; n is 1 or 2; and m is 2 or 3.

4. The electrolyte salt for electrical storage devices of claim 3 , wherein the ring is a pyrrolidine ring or the spiro ring is a 1,1′-spirobipyrrolidine ring.

5. An electrolyte salt for electrical storage devices, comprising a quaternary ammonium cation selected from the group consisting of formulas (4) to (6) below and a trimethylsilyl alkanesulfonate anion of formula (2) below

wherein R 11 to R 13 are each independently alkyl groups of 1 to 4 carbons; R 15 and R 16 are each independently alkyl groups of 1 to 4 carbons, with the proviso that R 15 and R 16 may be bonded to each other and may form a ring together with the nitrogen atom to which they are bonded; R is a methyl group or an ethyl group; n is 1 or 2; and m is 2 or 3.

6. An electrolyte containing the electrolyte salt for electrical storage devices of claim 1 .

7. An electrical storage device containing the electrolyte of claim 6 .

8. The electrical storage device of claim 7 which is an electrical double-layer capacitor.

9. The electrical storage device of claim 7 which is an electrolytic capacitor.

10. An electrolyte containing the electrolyte salt for electrical storage devices of claim 2 .

11. An electrolyte containing the electrolyte salt for electrical storage devices of claim 3 .

12. An electrolyte containing the electrolyte salt for electrical storage devices of claim 4 .

13. An electrolyte containing the electrolyte salt for electrical storage devices of claim 5 .

Assignees

• Nisshinbo Holdings Inc
• Nisshinbo Holdings Inc

Inventors

• Masuda Gen

Classifications

• C07F7/081 Primary

  comprising at least one atom selected from the elements N, O, halogen, S, Se or Te · CPC title

• H01G11/62 Primary

  characterised by the solute, e.g. salts, anions or cations therein · CPC title

• C07D207/06

  with radicals, containing only hydrogen and carbon atoms, attached to ring carbon atoms · CPC title

• C07C217/08

  the oxygen atom of the etherified hydroxy group being further bound to an acyclic carbon atom · CPC title

• C07C211/63

  having quaternised nitrogen atoms bound to acyclic carbon atoms · CPC title