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Corrugated flow field plates for use in fuel cells typically comprise a plurality of parallel open-faced fluid flow channels for the fuel cell reactants. Complex flow paths, such as serpentine flow paths, may be created in such corrugated flow field plates by incorporating channel couplings within t

Corrugated flow field plates for use in fuel cells typically comprise a plurality of parallel open-faced fluid flow channels for the fuel cell reactants. Complex flow paths, such as serpentine flow paths, may be created in such corrugated flow field plates by incorporating channel couplings within the plate or by attaching coupling subassemblies to the plate. The plates are particularly suitable for use in solid polymer electrolyte fuel cells.

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Corrugated flow field plates for use in fuel cells typically comprise a plurality of parallel open-faced fluid flow channels for the fuel cell reactants. Complex flow paths, such as serpentine flow paths, may be created in such corrugated flow field plates by incorporating channel couplings within t

Corrugated flow field plates for use in fuel cells typically comprise a plurality of parallel open-faced fluid flow channels for the fuel cell reactants. Complex flow paths, such as serpentine flow paths, may be created in such corrugated flow field plates by incorporating channel couplings within the plate or by attaching coupling subassemblies to the plate. The plates are particularly suitable for use in solid polymer electrolyte fuel cells. rogen atom, an alkyl group having 1 to 20 carbon atoms, or an aryl group having 6 to 30 carbon atoms; and Ar18represents an aryl group having 6 to 30 carbon atoms: wherein Ar19and Ar21independently represent an arylene group having 6 to 30 carbon atoms, an aromatic amine group represented by the above general formula (6) or an arylene ethenylene group represented by the above general formula (7); Ar20represents an aryl group having 6 to 30 carbon atoms, an aromatic amine group represented by the above general formula (8) or an arylene ethenylene group represented by the above general formula (9); and a ring may be formed between Ar19and Ar20,or Ar19and Ar21,or Ar20and Ar21; R19and R20independently represent a hydroxy group, an alkyl or alkoxy group having 1 to 20 carbon atoms, an aryl group having 6 to 30 carbon atoms, or divalent oxygen atom which is bonded to an intramolecular silicon atom by crosslinking or to an intermolecular silicon atom by crosslinking; R21represents hydrogen atom or a group represented by the following general formula (11): wherein R22,R23and R24independently represent a hydroxy group, an alkyl group or alkoxy group having 1 to 20 carbon atoms, or an aryl group having 6 to 30 carbon atoms: wherein R25,R26and R27,independently represent an alkyl group having 1 to 20 carbon atoms, an aryl group having 6 to 30 carbon atoms, or an arylene ethenylene group represented by the above general formula (9) or an aromatic amine group represented by the following general formula (13): wherein Ar22represents an arylene group having 6 to 30 carbon atoms, an aromatic amine group represented by the above general formula (6) or an arylene ethenylene group represented by the above general formula (7); Ar23and Ar24independently represent an aryl group having 6 to 30 carbon atoms, an aromatic amine group represented by the above general formula (8) or an arylene ethenylene group represented by the above general formula (9). 2. The hole transporting polymer according to claim 1, wherein the compound group represented by the above general formula (12) in claim 1 is in an amount of from 10% by mole to 150% by mole based on the total silicon atoms belonging to said hole transporting polymer but exclusive of the silicon atoms in said compound group; and the hydroxy group bonded to a silicon atom is in an amount of less than 10% by mole based on the total silicon atoms belonging to said hole transporting polymer but exclusive of the silicon atoms in said compound group. 3. The method of producing a hole transporting polymer of claim 1, wherein at least one silane compound represented by the following general formula (15), or a mixture of at least one silane compound represented by the following general formula (15) and at least one silane compound represented by the following general formula (16) is hydrolyzed and condensed: wherein R30,R31,R32and R33independently represent a halogen atom, an alkyl group or alkoxy group having 1 to 20 carbon atoms or an aryl group having 6 to 30 carbon atoms; R28and R29independently represent a hydroxy group or an alkoxy group having 1 to 20 carbon atoms; Ar25and Ar27are the same as Ar9and Ar11as defined in the general formula (5) of claim 1; Ar26is the same as Ar10as defined in the general formula (5) of claim 1; and a ring may be formed between Ar25and Ar26,or Ar25and Ar27,or Ar26and Ar27: wherein R35and R36independently represent a halogen atom, an alkyl group or alkoxy group having 1 to 20 carbon atoms or an aryl group having 6 to 30 car