# US 10,320,041 B2 · Zinc-air battery surfactants

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- Number: US 10,320,041 B2
- Document ID: US10320041B2
- Status: Granted
- Kind: B2
- Application number: 15/518,751
- Filed: 2015-10-14
- Published: 2017-08-17
- Granted: 2019-06-11
- Earliest claimed: 2014-10-15
- Assignees: Energizer Brands, LLC
- Applicants: Spectrum Brands
- Inventors: Abhishek Guha; Marc Syvertsen; Tony M. Rubsam
- Web page: https://patentgrep.com/patent/US10320041B2

## CPC

- H01M 12/08: composed of a half-cell of a fuel-cell type and a half-cell of the secondary-cell type
- H01M 6/045: {characterised by aqueous electrolyte}
- H01M 10/4235: {Safety or regulating additives or arrangements in electrodes, separators or electrolyte (H01M10/4242 takes precedence)}
- H01M 12/06: with one metallic and one gaseous electrode
- H01M 2300/0014: Alkaline electrolytes
- H01M 2300/0025: Organic electrolyte
- Y02E 60/10: Energy storage using batteries
- 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

## Abstract

A zinc-air battery includes an air cathode, a zinc anode, and an electrolyte, wherein the electrolyte includes an amphoteric fluorosurfactant.

## Claims

### Claim 1

A zinc-air battery comprising an air cathode, a zinc anode, and an
electrolyte, wherein the electrolyte comprises an amphoteric fluorosurfactant of Formula (I):
wherein
R1, R2, R3, R4, R5, R6, R7, and R8 are each independently a hydrogen, alkyl, alkenyl, or cycloalkyl group;
X1 is —C(O)—, —SO2—, —C(O)NRa—, —SO2NRa—, —CO2—, or —SO2O—;
Ra is H or an alkyl group;
m and p are each independently 0, 1, 2, 3, 4, 5, or 6; and
n and r are each independently 1, 2, 3, 4, or 5.

### Claim 2 (depends on 1)

The zinc-air battery of claim 1, wherein
R1-R6 are H;
R7 and R8 are C1-C4 alkyl;
X1 is SO2or SO2NRa;
Ra is H;
n is 2 or 3;
p is 2, 3, 4, or 5;
m is from 3 to 6; and
r is 1.

### Claim 3 (depends on 1)

The zinc-air battery of claim 1, wherein the amphoteric fluorosurfactant is present in the electrolyte from about 200 ppm to about 20000 ppm.

### Claim 4 (depends on 1)

The zinc-air battery of claim 1, wherein the amphoteric fluorosurfactant is present in the electrolyte from about 4000 ppm to about 15000 ppm.

### Claim 5 (depends on 1)

The zinc-air battery of claim 1, wherein:
the electrolyte further comprises a surfactant that is hexyl diphenyl oxide disulfonic acid, diethylenetriamine, octylphenoxypolyethoxyethanol, a compound of Formula (III), or a combination of any two or more thereof, and
the compound represented as Formula (III) is:
R13, R14, R15, R16, R17, R18, R19, R20, and R21 are each independently a hydrogen, alkyl, alkenyl, or cycloalkyl group;
X2 is O or S;
X3 is OH or SH; and
w is 5-50.

### Claim 6 (depends on 5)

The zinc-air battery of claim 5, wherein the electrolyte comprises a compound of Formula (III), and wherein R13 is a C1-C12 alkyl group; R14, R15, R16, R17, R18, R19, R20, and R21 are each hydrogen; X2 is O; X3 is OH; w is 5-15.

### Claim 7 (depends on 5)

The zinc-air battery of claim 5, wherein the electrolyte comprises a compound of Formula (III), and wherein R13 is octyl or 1,1,3,3-tetramethylbutyl; R14, R15, R16, R17, R18, R19, R20, and R21 are each hydrogen; X2 is O; X3 is OH; w is 5-15.

### Claim 8 (depends on 1)

The zinc-air battery of claim 1, wherein the electrolyte further comprises a corrosion inhibitor, a gelling agent, zinc oxide, potassium hydroxide, sodium hydroxide, polyacrylate polymer, or a combination of any two or more thereof.

### Claim 9 (depends on 8)

The zinc-air battery of claim 8, wherein the electrolyte further comprises a corrosion inhibitor selected from a group consisting of indium hydroxide, lithium hydroxide, polyethylene glycol, polypropylene glycol, polyaniline, or a combination of any two or more thereof.

### Claim 10 (depends on 9)

The zinc-air battery of claim 9, wherein the corrosion inhibitor is lithium hydroxide.

### Claim 11 (depends on 1)

The zinc-air battery of claim 1 further comprising a separator between the air cathode and the zinc anode.

### Claim 12 (depends on 1)

The zinc-air battery of claim 1, wherein the electrolyte further comprises a corrosion inhibitor that is present in the electrolyte from about 100 ppm to about 25000 ppm.

### Claim 13 (depends on 1)

The zinc-air battery of claim 1, wherein the electrolyte further comprises a gas suppressing additive.

### Claim 14 (depends on 13)

The zinc-air battery of claim 13, wherein the gas suppressing additive is zinc oxide, lead acetate, bismuth oxide, aluminum hydroxide, calcium hydroxide, lithium hydroxide, or a combination of any two or more thereof.