CPC H01M 4/8828 (2013.01) [H01M 4/8807 (2013.01); H01M 4/8867 (2013.01); H01M 4/8892 (2013.01); H01M 4/926 (2013.01); H01M 8/1004 (2013.01); H01M 2008/1095 (2013.01)] | 8 Claims |
1. A manufacturing process comprising:
depositing a catalyst support on a gas diffusion layer to form a catalyst support-coated gas diffusion layer;
depositing, by atomic layer deposition, a catalyst layer on the catalyst support-coated gas diffusion layer to form a catalyst-coated gas diffusion layer; and
depositing an ionomer on the catalyst-coated gas diffusion layer to form an ionomer-coated gas diffusion layer;
wherein:
depositing the catalyst support is decoupled from depositing the catalyst layer;
depositing the ionomer is decoupled from depositing the catalyst layer;
depositing the ionomer comprises at least partially impregnating the ionomer into the catalyst layer, and the ionomer is deposited according to a concentration gradient wherein a concentration of the ionomer descends in a direction toward the gas diffusion layer; and
the catalyst layer is substantially alcohol-free.
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