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AssigneesJsr Corporation, Honda Giken Kogyo Kabushiki Kaisha
InventorsMakoto Higami, Kohei Goto, Yoichi Asano, Ryoichiro Takahashi, Osamu Kakutani, Gen Okiyama
Estimating the term…
The method for the production of multilayers comprises: applying a coating solution (I) which comprises a dissolved or dispersed proton-conductive polymer and a solvent (Is) containing water in amounts from 25 to 60 wt % and an organic solvent in amounts from 75 down to 40 wt %, on an electrode, applying a coating solution (II) which comprises a dissolved or dispersed proton-conductive polymer and a solvent (IIs) containing water in amounts from 0 to less than 25 wt % and an organic solvent in amounts above 75 wt %, on the wet first coating without any drying of the first coating; and drying the coatings to form an electrolyte membrane. The methods can provide multilayers capable of satisfactory power generation properties as an electrode structure by forming an electrolyte membrane on an electrode without causing any penetration of electrolyte into the electrode.
A method for the production of a multilayer comprising an electrode and an electrolyte membrane, said method comprising:
Dependencies are inferred from the claim text.
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Fuel cells with solid electrolytes: characterised by membrane-electrode assemblies [MEA]
Characterised by the chemical structure of the main chain of the ion-conducting polymer: having only carbon and oxygen, e.g. polyethers,…
Characterised by the chemical structure of the main chain of the ion-conducting polymer: having carbon, oxygen and other atoms, e.g. sulfonated…
Characterised by the chemical structure of the main chain of the ion-conducting polymer: having sulfur, e.g. sulfonated-polyethersulfones [S-PES]
Term ended 29 May 2023 (estimated)
The present invention relates to a method for the production of a multilayer of an electrode and an electrolyte membrane suitable for use in fuel cells.
In general, fuel cells include a unit of an electrode and an electrolyte membrane.
It is a conventional practice in producing the electrode-electrolyte units that a hydrogen reduction catalyst carried on carbon is mixed with an electrolyte, the resultant electrode paste is applied on carbon paper and heated to form an electrode, and an electrolyte filmy membrane is sandwiched between two electrodes so that a three-layered anode/electrolyte/cathode unit is obtained by hot pressing the superposed membranes.
The present invention is further described with reference to the following Examples, but it should be construed that the invention is in no way limited to those Examples.
1. Preparation of Coating Solutions (I)
(1) Preparation of the Coating Solution A