Membrane electrode assembly with improved performance using two component fluorinated blended electrolyte additives
AssigneeHyzon Motors Inc.
InventorsRajesh Bashyam, Zhai Jun
Life of this patent
Estimating the term…
Abstract
An electrode layer can have an electrically conductive material, a catalyst, an ionomer binder, and a perfluorocarbon compound. The ionomer binder forms hydrophilic regions on the electrically conductive material to support proton and water transport. The perfluorocarbon compound forms hydrophobic regions on the electrically conductive material to support oxygen solubility and transport. The electrode can be used in making a membrane electrode assembly and can be configured as a cathode thereof. Fuel cells and fuel stacks can include such membrane electrode assemblies.
Claims20
An electrode for a membrane electrode assembly of a fuel cell, comprising:
- a catalyst loaded material including an electrically conductive material and a catalyst disposed on the electrically conductive material;
- an ionomer binder;
- and
- a perfluorocarbon compound;
- wherein the ionomer binder and the perfluorocarbon compound are disposed on the catalyst loaded material by simultaneously mixing a composition including the catalyst loaded material, the ionomer binder, and the perfluorocarbon compound, the composition formed by independently combining the catalyst loaded material, the ionomer binder, and the perfluorocarbon compound.
A method for manufacturing an electrode for a membrane electrode assembly of a fuel cell, the method comprising:
- disposing a catalyst on an electrically conductive material to form a catalyst loaded material;
- and
- disposing an ionomer binder and a perfluorocarbon compound on the catalyst loaded material by simultaneously mixing a composition including the catalyst loaded material, the ionomer binder, and the perfluorocarbon compound, the composition formed by independently combining the catalyst loaded material, the ionomer binder, and the perfluorocarbon compound.
Dependencies are inferred from the claim text.