# US 2019/0245207 A1 · Electrochemical device

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- Number: US 2019/0245207 A1
- Document ID: US20190245207A1
- Status: Published application
- Kind: A1
- Application number: 16/341,945
- Filed: 2017-10-26
- Published: 2019-08-08
- Earliest claimed: 2016-10-28
- Assignees: Panasonic Intellectual Property Management Co., Ltd.
- Applicants: Panasonic Intellectual Property Management Co., Ltd.
- Inventors: HIROKI HAYASHI; SUSUMU NOMOTO
- Web page: https://patentgrep.com/patent/US20190245207A1

## CPC

- H01M 4/608: {containing heterocyclic rings}
- C08G 73/0266: {Polyanilines or derivatives thereof}
- H01G 11/06: with one of the electrodes allowing ions to be reversibly doped thereinto, e.g. lithium ion capacitors [LIC]
- H01G 11/48: Conductive polymers
- H01G 11/50: specially adapted for lithium-ion capacitors, e.g. for lithium-doping or for intercalation
- H01G 11/60: characterised by the solvent
- H01G 11/62: characterised by the solute, e.g. salts, anions or cations therein
- H01M 4/60: of organic compounds
- H01M 4/606: {containing aromatic main chain polymers}
- H01M 10/05: Accumulators with non-aqueous electrolyte (H01M10/39 takes precedence)
- H01M 10/052: Li-accumulators
- H01M 10/0525: Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
- H01M 10/0568: characterised by the solutes
- H01M 10/0569: characterised by the solvents
- H01M 2004/028: {Positive electrodes}
- H01M 2300/0037: Mixture of solvents
- Y02E 60/10: Energy storage using batteries
- Y02E 60/13: Energy storage using capacitors
- H01M: PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- C08G: MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- 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

## Abstract

In an electrochemical device combining a positive electrode including a conductive polymer that is to be doped and dedoped with anions with a negative electrode including a negative electrode material that occludes and releases lithium ions, float characteristics in the electrochemical device can be maintained. The electrochemical device includes: a positive electrode including, as a positive electrode active material, a conductive polymer that is to be doped and dedoped with anions, a negative electrode including a negative electrode active material that occludes and releases lithium ions, and an electrolytic solution containing the anions and the lithium ions. 0<B/A<0.7 is satisfied, where A represents a total amount (mol) of monomer units that constitute the conductive polymer included in the positive electrode and B represents a total amount (mol) of the anions included in the electrochemical device.

## Claims

### Claim 1

An electrochemical device comprising:
a positive electrode including, as a positive electrode active material, a conductive polymer that is to be doped and dedoped with anions;
a negative electrode including a negative electrode active material that occludes and releases lithium ions; and
an electrolytic solution containing the anions and the lithium ions,
wherein 0<B/A<0.7 is satisfied,
where A represents a total amount (mol) of monomer units that constitute the conductive polymer included in the positive electrode and B represents a total amount (mol) of the anions included in the electrochemical device.

### Claim 2 (depends on 1)

The electrochemical device according to claim 1, wherein the conductive polymer includes at least one selected from the group consisting of polyaniline, polypyrrole, polythiophene, and a polymer derivative having a basic skeleton of polyaniline, polypyrrole, polythiophene.

### Claim 3 (depends on 1)

The electrochemical device according to claim 1, wherein the anions include at least one selected from the group consisting of BF4−, PF6−, ClO4−, FSO3−, and N(FSO2)2−.

### Claim 4 (depends on 1)

The electrochemical device according to claim 1, wherein the electrolytic solution contains dimethyl carbonate and propylene carbonate as solvents.