# US 5,700,363 A · Porous nickel electrode substrate

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- Number: US 5,700,363 A
- Document ID: US5700363A
- Status: Granted
- Kind: A
- Application number: 08/601,738
- Filed: 1996-02-15
- Granted: 1997-12-23
- Earliest claimed: 1996-02-15
- Assignees: Inco Limited
- Inventors: Victor Alexander Ettel; John Ambrose; Kirt Kenneth Cushnie; James Alexander E. Bell; Vladimir Paserin; Peter Joseph Kalal
- Web page: https://patentgrep.com/patent/US5700363A

## CPC

- H01M 4/745: {Expanded metal}
- H01M 4/667: {in the form of layers, e.g. coatings}
- H01M 4/70: characterised by shape or form
- H01M 4/80: Porous plates, e.g. sintered carriers
- H01M 4/806: {Nonwoven fibrous fabric containing only fibres}
- H01M 4/668: {Composites of electroconductive material and synthetic resins}
- H01M 4/808: {Foamed, spongy materials}
- H01M 2004/029: {Bipolar electrodes}
- Y02E 60/10: Energy storage using batteries
- Y10T 29/49114: including adhesively bonding
- Y10T 29/49115: including coating or impregnating
- 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
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

A porous nickel electrode substrate having a central high conductivity core sandwiched between two layers of porous conductive material such as nickel foam or nickel felt. The porous conductive material is plated with nickel and then sintered. By selectively controlling the plating of nickel on the porous material, variable conductivities may be designed into the substrate.

## Claims

### Claim 1

A process for varying the conductivity of an electrode substrate, the process comprising:
1) providing an electrically conductive core having opposing sides,
2) affixing at least one porous layer to each side of the core, the porous layer selected from the group consisting of foam and felt,
3) depositing nickel from the decomposition of nickel tetracarbonyl directly onto each porous layer,
4) causing the concentration of the nickel deposit from step 3) to vary along the substrate, and
5) sintering the nickel deposit.

### Claim 2 (depends on 1)

The process according to claim 1 wherein nickel powder is added to the substrate prior to sintering.

### Claim 3 (depends on 1)

The process according to claim 1 wherein a tab is formed from the core.

### Claim 4 (depends on 1)

The process according to claim 1 wherein the core is selected from the group consisting of plate, foil, mesh and expanded metal.