Immobilized enzymes in biocathodes

Details Immobilized enzymes in biocathodes Immobilized enzymes in biocathodes

H - Electricity

01

M

H01M 8/16 (2006.01) H01M 4/90 (2006.01)

Patent

CA 2544971

Disclosed is an improved biofuel cell having a cathode comprising a dual function membrane, which contains an oxygen oxidoreductase enzyme immobilized within a buffered compartment of the membrane and an electron transport mediator which transfers electrons from an electron conducting electrode to the redox reaction catalyzed by the oxygen oxidoreductase enzyme. The improved biofuel cell also has an anode that contains an oxidoreductase enzyme that uses an organic fuel, such as alcohol, as a substrate. An electric current can flow between the anode and the cathode.

La présente invention concerne une cellule à biocombustible améliorée qui comprend une membrane à double fonction contenant une oxygène oxydoréductase immobilisée dans un compartiment tamponné de la membrane et un médiateur de transport d'électrons qui transfère les électrons d'une électrode conductrice d'électrons à la réaction d'oxydoréduction catalysée par l'oxygène oxydoréductase. La cellule à biocombustible améliorée comporte également une anode contenant une oxydoréductase qui utilise un combustible organique, tel que l'alcool, en tant que substrat. Un courant électrique peut s'écouler entre l'anode et la cathode.

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