# US 5,705,288 A · Process for generating electrical energy in a high temperature fuel cell

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- Number: US 5,705,288 A
- Document ID: US5705288A
- Status: Granted
- Kind: A
- Application number: 08/619,833
- Filed: 1996-03-19
- Granted: 1998-01-06
- Earliest claimed: 1995-03-20
- Assignees: Haldor Topsoe A/S
- Inventors: Christian Olsen; Jens Rostrup Nielsen; Kim Aasberg-Petersen
- Web page: https://patentgrep.com/patent/US5705288A

## CPC

- H01M 8/0625: {in a modular combined reactor/fuel cell structure}
- H01M 2008/147: {Fuel cells with molten carbonates}
- H01M 2300/0051: Carbonates
- Y02E 60/50: Fuel cells
- 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

Process for the generation of electrical energy in an internal reforming high temperature fuel cell, comprising steam and/or carbon dioxide reforming of a hydrocarbon feed gas in contact with a catalyst having activity in the steam reforming of the carbonaceous gas to fuel cell fuel gas and being arranged within the fuel cell in heat conducting relationship with electrochemical reactions proceeding in the cell; and electrochemically reacting the fuel gas in an anode compartment of the cell for the generation of electric energy, wherein the steam reforming activity of the catalyst has been reduced by including one or more salts of metals selected from Group IA, IB, IIA, IVA and VA of the Periodic Table in the catalyst.

## Claims

### Claim 1

Process for the generation of electrical energy in an internal reforming high temperature fuel cell, comprising steam or carbon dioxide reforming of a hydrocarbon feed gas in contact with a catalyst having activity in the steam reforming of the carbonaceous gas to fuel cell fuel gas and being arranged within the fuel cell in heat conducting relationship with electrochemical reactions proceeding the cell; and
electrochemically reacting the fuel gas in an anode compartment of the cell for the generation of electric energy, wherein the steam reforming activity of the catalyst has been reduced by including in the catalyst one or more salts of metals selected from the group consisting of Na.sub.2 CO.sub.3, Li.sub.2 CO.sub.3, K.sub.2 CO.sub.3, Cu(NO.sub.3).sub.2, BaCO.sub.3 and salts of the metals of Groups IVA and VA of the Periodic Table.

### Claim 2 (depends on 1)

The process of claim 1, wherein the high temperature fuel cell is a molten carbonate fuel cell.

### Claim 3 (depends on 1)

The process of claim 1 in which said salt is a carbonate or nitrate.

### Claim 4 (depends on 1)

The process of claim 1, wherein the steam reforming activity of the catalyst has been reduced by including one or more Group IA salt in the catalyst.

### Claim 5 (depends on 3)

The process of claim 3, wherein the Group IA metal salt is a carbonate.

### Claim 6 (depends on 4)

The process of claim 4, wherein the high temperature fuel cell is a molten carbonate fuel cell.