Method and device to improve operation of a fuel cell

Details Method and device to improve operation of a fuel cell Method and device to improve operation of a fuel cell

H - Electricity

01

M

H01M 8/00 (2006.01) H01M 8/10 (2006.01)

Patent

CA 2595222

A method of conditioning a fuel cell having an anode supplied with a fuel, and a cathode supplied with an oxidant comprising the steps of: (i) applying a first external load to said fuel cell to produce a first voltage which is less than open circuit voltage for a first period of time less than about 20 minutes; (ii) Removing the external load for a second period of time less than about 2 minutes; and (iii) Applying a second external load to said fuel cell to produce a second voltage which is less than open circuit voltage for a third period of time less than about 20 minutes.

L'invention concerne un procédé de conditionnement d'une pile à combustible comportant une anode alimentée en combustible, et une cathode alimentée en oxydant. Le procédé comporte les étapes consistant à: (1) appliquer une première charge externe sur la pile à combustible afin de produire une première tension, inférieure à la tension en circuit ouvert, pendant une première période de temps inférieure à environ 20 minutes; (2) retirer la charge externe pendant une deuxième période de temps inférieure à environ 2 minutes; et (3) appliquer une deuxième charge externe sur la pile à combustible afin de produire une deuxième tension, inférieure à la tension en circuit ouvert, pendant une troisième période de temps inférieure à environ 20 minutes.

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