# US 7,465,518 B2 · Cell with copper oxide cathode

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- Number: US 7,465,518 B2
- Document ID: US7465518B2
- Status: Granted
- Kind: B2
- Application number: 11/488,525
- Filed: 2006-07-18
- Published: 2006-11-16
- Granted: 2008-12-16
- Earliest claimed: 2003-05-09
- Assignees: Eveready Battery Company, Inc.
- Inventors: Michael F. Mansuetto; Andrew Webber
- Web page: https://patentgrep.com/patent/US7465518B2

## CPC

- H01M 4/5815: {Sulfides}
- C01G 3/02: Oxides; Hydroxides
- H01M 4/06: Electrodes for primary cells
- H01M 4/364: {as mixtures}
- H01M 4/48: of inorganic oxides or hydroxides
- H01M 6/08: with cup-shaped electrodes
- C01P 2004/51: Particles with a specific particle size distribution
- C01P 2004/53: bimodal size distribution
- C01P 2004/61: Micrometer sized, i.e. from 1-100 micrometer
- C01P 2006/10: Solid density
- C01P 2006/12: Surface area
- C01P 2006/40: Electric properties
- H01M 4/02: Electrodes composed of, or comprising, active material
- H01M 4/50: of manganese
- H01M 2004/028: {Positive electrodes}
- Y02E 60/10: Energy storage using batteries
- H01M: PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- C01G: COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F (metal hydrides {monoborane, diborane or addition complexes thereof} C01B6/00; salts of oxyacids of halogens C01B11/00; peroxides, salts or peroxyacids C01B15/00; thiosulfates, dithionites, polythionates C01B17/64; compounds containing selenium, or tellurium C01B19/00; binary compounds of nitrogen with metals C01B21/06; azides C01B21/08; {compounds containing nitrogen, other non-metals and metal C01B21/082}; metal amides C01B21/092; nitrites C01B21/50; {compounds of noble gases C01B23/0005}; phosphides C01B25/08; salts of oxyacids of phosphorus C01B25/16; carbides C01B32/90; compounds containing silicon C01B33/00; compounds containing boron C01B35/00; compounds having molecular sieve properties but not having base-exchange properties C01B37/00; compounds having molecular sieve and base-exchange properties, e.g. crystalline zeolites, C01B39/00; cyanides C01C3/08; salts of cyanamide C01C3/16; thiocyanates C01C3/20)
- C01P: INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION

## Abstract

An electrochemical battery cell with CuxO, where x is from 0.9 to 1.3, as a positive electrode active material. The specific surface area of the CuxO is from 1.0 to 4.0 m2/gram, preferably from 1.0 to 2.9 m2/g to provide an increase in the high voltage discharge capacity of the CuxO.

## Claims

### Claim 1

An electrochemical battery cell comprising:
a cell container;
a positive electrode comprising a positive electrode active material;
a negative electrode comprising a negative electrode active material comprising zinc;
a separator disposed between the positive and negative electrodes; and
an electrolyte;
wherein the positive electrode active material comprises copper oxide and one or more additional active materials, the one or more additional positive electrode active materials comprises manganese dioxide, the copper oxide has a formula CuxO, where x is from 0.9 to 1.3, and the copper oxide has a BET specific surface area from 1.0 to 2.9 m2 /gram.

### Claim 2 (depends on 1)

The cell defined in claim 1, wherein the CuxO comprises particles that have a D50 value less than 50 μm and a D10 value from 1.0 to 3.0 μm, as measured by laser diffraction analysis using a unified scatter technique.

### Claim 3 (depends on 1)

The cell defined in claim 1 wherein the electrolyte comprises an aqueous alkaline solution.

### Claim 4

An electrochemical battery cell comprising:
a cell container;
a positive electrode comprising a positive electrode active material;
a negative electrode comprising a negative electrode active material comprising zinc;
a separator disposed between the positive and negative electrodes; and
an aqueous alkaline electrolyte; wherein
the positive electrode active material comprises copper oxide having a formula CuxO, where x is from 0.9 to 1.3, a BET specific surface area from 1.0 to 2.9 m2 /gram, and a particle size distribution with a D50 value less than 50 μm as measured by laser diffraction analysis using a unified scatter technique, and the positive electrode active material further comprises manganese dioxide.

### Claim 5 (depends on 4)

The cell defined in claim 4, wherein the BET specific surface area is from 1.45 to 2.9 m2/gram.

### Claim 6 (depends on 5)

The cell defined in claim 5, wherein the BET specific surface area is from 1.7 to 2.9 m2/gram.

### Claim 7 (depends on 4)

The cell defined in claim 4, wherein the particle size distribution further has a D10 value from 1.0 to 2.0 μm.

### Claim 8 (depends on 7)

The cell defined in claim 7, wherein the D10 value is from 1.0 to 1.7 μm.

### Claim 9 (depends on 4)

The cell defined in claim 4, wherein the CuxO has an average primary particle size from 0.3 to 5.0 μm.

### Claim 10 (depends on 9)

The cell defined in claim 9, wherein the average primary particle size is from 0.3 to 1.0 μm.

### Claim 11 (depends on 1)

The cell defined in claim 1, wherein the positive electrode further comprises graphite, and the graphite consists essentially of a non-expanded graphite powder.

### Claim 12 (depends on 4)

The cell defined in claim 4, wherein the positive electrode further comprises graphite, and the graphite consists essentially of a non-expanded graphite powder.