# US 12,113,175 B2 · Electrolyte for supercapacitor and high-power battery use

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- Number: US 12,113,175 B2
- Document ID: US12113175B2
- Status: Granted
- Kind: B2
- Application number: 16/494,879
- Filed: 2018-03-14
- Published: 2020-07-16
- Granted: 2024-10-08
- Earliest claimed: 2017-03-17
- Assignees: BroadBit Batteries Oy
- Applicants: BroadBit Batteries Oy
- Inventors: Andras Kovacs; Tapani Alasaarela; David Lloyd; David Brown
- Web page: https://patentgrep.com/patent/US12113175B2

## CPC

- H01G 11/58: Liquid electrolytes
- H01M 10/0569: characterised by the solvents
- H01G 11/60: characterised by the solvent
- H01G 11/62: characterised by the solute, e.g. salts, anions or cations therein
- H01M 10/0568: characterised by the solutes
- H01M 2220/10: Batteries in stationary systems, e.g. emergency power source in plant
- H01M 2220/20: Batteries in motive systems, e.g. vehicle, ship, plane
- H01M 2300/002: Inorganic electrolyte
- H01M 2300/0028: characterised by the solvent
- Y02E 60/10: Energy storage using batteries
- Y02E 60/13: Energy storage using capacitors
- Y02T 10/70: Energy storage systems for electromobility, e.g. batteries
- 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)
- H01M: PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION

## Abstract

The present application relates to an electrochemical cell comprising a nitrile-based solvent based electrolyte, wherein the electrochemical cell includes an electrolyte salt that comprises NaClO4, and the electrolyte salt has a maximum electrolyte conductivity at a discharge state Molar concentration greater than 1.

## Claims

### Claim 1

An electrochemical cell comprising:
a nitrile-based solvent based electrolyte, wherein
the electrochemical cell includes an electrolyte salt that comprises NaClO4, the electrolyte salt concentration in a discharge state is greater than 1.5,
the electrolyte salt has a maximum electrolyte conductivity at a discharge state Molar concentration greater than 1; wherein
i) the electrolyte salt further comprises a sodium containing co-salt having a co-salt ratio between 0.5:1 and 32:1; and/or
ii) the electrolyte salt concentration in the discharge state is less than 3.5.

### Claim 2 (depends on 1)

The electrochemical cell according to claim 1, wherein the nitrile-based solvent based electrolyte is acetonitrile.

### Claim 3 (depends on 2)

The electrochemical cell according to claim 2, wherein the co-salt is NaPF6, NaTriflate, NaDFOB, or any combination thereof.

### Claim 4 (depends on 2)

A device comprising the electrochemical cell according to claim 2.

### Claim 5 (depends on 1)

The electrochemical cell according to claim 1, wherein the co-salt is NaPF6, NaTriflate, NaDFOB, or any combination thereof.

### Claim 6 (depends on 5)

A device comprising the electrochemical cell according to claim 5.

### Claim 7 (depends on 1)

A device comprising the electrochemical cell according to claim 1.

### Claim 8 (depends on 7)

The device according to claim 7, wherein the device is a battery pack.

### Claim 9 (depends on 8)

The device according to claim 8, wherein the device is an electric vehicle, an uninterrupted power supply, a backup power supply, a personal, local, regional or grid storage or grid stabilization unit or an engine starter battery.

### Claim 10 (depends on 7)

The device according to claim 7, wherein the device is an electric vehicle, an uninterrupted power supply, a backup power supply, a personal, local, regional or grid storage or grid stabilization unit or an engine starter battery.

### Claim 11 (depends on 1)

The electrochemical cell according to claim 1, wherein the nitrile-based solvent based electrolyte is a liquid electrolyte.