Electrode and electrochemical cell
OwnerPer HJALMARSSON, Chandra MACAULEY +1inventors
InventorsPer HJALMARSSON, Chandra MACAULEY, Robert LEAH
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Abstract
An electrochemical cell is disclosed having a porous metal support, a gas transport layer on the porous metal support, and an electrode layer on the gas transport layer. The gas transport layer is electrically conductive and has an open pore structure comprising a pore volume fraction of 20% by volume or higher and wherein the electrode layer has a pore volume fraction lower than the pore volume fraction of the gas transport layer. Also disclosed is a stack of such electrochemical cells and a method of producing such an electrochemical cell.
Claims24
An electrochemical cell comprising:
- a porous metal support, a gas transport layer on the porous metal support, and an electrode layer on the gas transport layer,
- wherein the gas transport layer is electrically conductive and has an open pore structure comprising a pore volume fraction of 20% by volume or higher and wherein the electrode layer has a pore volume fraction lower than the pore volume fraction of the gas transport layer.
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A method of producing an electrochemical cell, the method comprising
- providing a porous metal support,
- providing a precursor composition comprising at least one precursor for a porous and electrically conductive gas transport layer,
- applying the precursor composition to the porous substrate, optionally drying, and optionally sintering, thereby forming an electrically conductive gas transport layer having a pore volume fraction of 20% by volume or higher;
- providing an electrode precursor composition comprising at least one precursor for an electrode layer, and
- applying the electrode precursor composition on the gas transport layer, optionally drying, and optionally sintering, thereby forming an electrode layer on the gas transport layer, the electrode layer having a pore volume fraction lower than the pore volume fraction of the gas transport layer.
Dependencies are inferred from the claim text.