# US 11,444,325 B2 · Electrolytic solution and electrochemical device

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- Number: US 11,444,325 B2
- Document ID: US11444325B2
- Status: Granted
- Kind: B2
- Application number: 16/615,640
- Filed: 2018-05-31
- Published: 2020-05-28
- Granted: 2022-09-13
- Earliest claimed: 2017-06-01
- Assignees: Showa Denko Materials Co., Ltd.
- Applicants: Showa Denko Materials Co., Ltd.
- Inventors: Kaoru Konno; Kumpei Yamada; Ryuichiro Fukuta
- Web page: https://patentgrep.com/patent/US11444325B2

## CPC

- H01M 10/0567: characterised by the additives
- C07F 7/12: Organo silicon halides
- H01G 11/64: characterised by additives
- H01M 4/382: {Lithium (H01M4/405 takes precedence)}
- H01M 4/386: {Silicon or alloys based on silicon}
- H01M 4/387: {Tin or alloys based on tin}
- H01M 4/5835: {Comprising fluorine or fluoride salts}
- H01M 4/587: for inserting or intercalating light metals
- H01M 10/0525: Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
- H01G 11/06: with one of the electrodes allowing ions to be reversibly doped thereinto, e.g. lithium ion capacitors [LIC]
- H01M 2300/0025: Organic electrolyte
- Y02E 60/10: Energy storage using batteries
- Y02T 10/70: Energy storage systems for electromobility, e.g. batteries
- H01M: PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- C07F: ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM (metal-containing porphyrins C07D487/22)
- H01G: CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE (selection of specified materials as dielectric H01B3/00; capacitors having potential barriers H10D1/62, H10K10/10)
- Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION

## Abstract

One aspect of the present invention provides an electrolytic solution comprising a compound represented by the following formula (1), wherein a content of the compound is 10% by mass or less based on the total amount of the electrolytic solution, wherein R1 to R3 each independently represent an alkyl group or a fluorine atom, R4 represents an alkylene group, and R5 represents an organic group containing a nitrogen atom.

## Claims

### Claim 1

An electrolytic solution comprising a compound represented by the following formula (1), wherein a content of the compound is 0.0001% by mass or more and 10% by mass or less based on a total amount of the electrolytic solution,
wherein R1 to R3 each independently represent an alkyl group or a fluorine atom, at least one of R1 to R3 is a fluorine atom, R4 represents an alkylene group, and R5 represents a group represented by the following formula (2):
wherein R6 and R7 each independently represent a hydrogen atom or an alkyl group, and * represents a bond.

### Claim 2 (depends on 1)

An electrochemical device comprising:
a positive electrode;
a negative electrode; and
the electrolytic solution according to claim 1.

### Claim 3 (depends on 2)

The electrochemical device according to claim 2, wherein the negative electrode comprises a carbon material.

### Claim 4 (depends on 3)

The electrochemical device according to claim 3, wherein the carbon material comprises graphite.

### Claim 5 (depends on 3)

The electrochemical device according to claim 3, wherein the negative electrode further comprises a material comprising at least one element of the group consisting of silicon and tin.

### Claim 6 (depends on 2)

The electrochemical device according to claim 2, wherein the electrochemical device is a non-aqueous electrolytic solution secondary battery or a capacitor.