Method for membrane electrode assembly fabrication and membrane electrode assembly
AssigneeGM Global Technology Operations LLC
InventorsJunliang Zhang, Matthew Dioguardi, Frederick T. Wagner
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Abstract
A method of coating carbon based electrodes and thick electrodes without mud-cracking is described. The electrode ink is deposited on a decal substrate, and transferred to a hot press before the electrode ink is completely dried. The partially dried electrode ink is hot pressed to the membrane to form a membrane electrode assembly. A membrane electrode assembly including a polymer membrane; and a pair of crack-free electrode layers on opposite sides of the polymer membrane, each of the pair of electrode layers having a thickness of at least about 50 μm is also described.
Claims20
A method of fabricating a membrane electrode assembly comprising:
- depositing a layer of electrode ink on a decal substrate;
- partially drying the electrode ink to form an electrode layer;
- and
- hot pressing the partially dried electrode layer to a membrane to form the membrane electrode assembly.
A method of fabricating a membrane electrode assembly comprising:
- depositing a layer of electrode ink on a decal substrate, the electrode ink containing a non-noble metal catalyst;
- partially drying the electrode ink to form an electrode layer;
- applying a vacuum to the electrode ink;
- hot pressing the partially dried electrode layer to a membrane to form the membrane electrode assembly.
A membrane electrode assembly comprising:
- a polymer membrane;
- a pair of crack-free electrode layers on opposite sides of the polymer membrane, each of the pair of electrode layers having a thickness of at least about 50 μm.
Dependencies are inferred from the claim text.