Chemistry: electrical current producing apparatus – product – and – Fuel cell – subcombination thereof – or method of making or... – Electrode structure or composition
Reexamination Certificate
2010-04-30
2011-11-15
Gilliam, Barbara (Department: 1727)
Chemistry: electrical current producing apparatus, product, and
Fuel cell, subcombination thereof, or method of making or...
Electrode structure or composition
C429S484000, C429S535000, C429S491000, C429S492000, C502S101000
Reexamination Certificate
active
08057960
ABSTRACT:
Provided is a method for manufacturing an electrode for fuel cells which can manufacture an electrode having superior electric power generation characteristics by enlarging the contact area of a polymer electrolyte with catalyst particles to increase the area of the three-phase interface, resulting in improvement of availability of the catalyst particle surface. According to the method for manufacturing an electrode for fuel cells of the present invention, an electrode for fuel cells is obtained by: binding catalyst particles and porous carbon particles to a base material to form a catalyst porous structure; preparing an electrolyte precursor mixture containing a polymerizable electrolyte precursor represented by (R1O)3Si—R2—SO3H (wherein, R1represents a hydrogen atom or an alkyl group having 1 to 4 carbon atoms; and R2represents an alkylene group having 1 to 15 carbon atoms), a polymerizable spacer precursor represented by (R3O)mSiR4n(wherein, R3represents a hydrogen atom or an alkyl group having 1 to 4 carbon atoms; and R4represents —(CH2)x—(CF2)y—CF3), and a solvent; impregnating the catalyst porous structure with the electrolyte precursor mixture to form a catalyst-electrolyte precursor complex; and performing a copolymerization reaction of the aforementioned compounds in the complex to form a water-insoluble polymer electrolyte layer containing a copolymer.
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Gilliam Barbara
Martin Angela
McDermott Will & Emery LLP
Panasonic Corporation
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