RESEARCH ON COMPACT FUEL CELL POWER SUPPLIES
Technical Report,30 Nov 1960,30 Jan 1961
GENERAL ELECTRIC CO WEST LYNN MA WEST LYNN
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In this fuel cell development study, the contact resistance between the various current-collector materials and metallic-black electrodes is nearly inversely proportional to superficial contact area which is consistent with electrode-surface roughness controlling the contact. Advances have been made in the computer-integration of component geometry and specific resistance into cell internal-resistance, and some comarison between experimental and calculated values of internal cell resistance has been made. A correlation between ionic conductance of four different ion-exchange polymers and their other measured properties shows PKA values to be a better prediction-indicator of conductivity than ion-exchange capacity. When studying the amount of crosslinking versus the conductivity in a given polymer system, conductivity varies along with ion-exchange capacity. Seven new reinforcing materials for membranes were evaluated with no improvement over existing materials. Nine carbon-catalysts, impregnated with platinum, were used in cell assemblies as the oxygen electrode. Initial work on both the electrolysis and chemical methods of external hydrogen generation are reported.