Method for regeneration of performance in a fuel cell
AssigneeE.I. du Pont de Nemours and Company
InventorsSridhar Makam P. Kumar, Tuyu Xie, Mohamed Abdou, Peter Andrin
Life of this patent
Estimating the term…
Abstract
A process for improved performance in at least one fuel cell, having a loss in power output of at least 5% of an initial power output, wherein the fuel cell comprises a cathode, an anode, an anode chamber, a cathode chamber, a fuel comprising an anolyte that flows through the cell, and a catholyte gas, wherein the fuel cell is connected to an external load, and wherein the process includes the steps of taking the load off the fuel cell; and applying an external electric field from an external power source to the fuel cell to reverse electrochemical reactions until at least 5% of the lost power output is regained. Purging the fuel cell further enhances regeneration of the cell.
Claims37
A process for improved performance in at least one fuel cell, having a loss in power output of at least 5% of an initial power output, wherein the fuel cell comprises a cathode, an anode, an anode chamber, a cathode chamber, a fuel comprising an anolyte that flows through the cell, and a catholyte gas, wherein the fuel cell is connected to an external load, and wherein the process comprises:
- (a1) taking the load off the fuel cell;
- and
- (a2) applying an external electric field from an external power source to the fuel cell to reverse electrochemical reactions until at least 5.0% of the lost power output is regained.
Dependencies are inferred from the claim text.