Fuel cell applied research: electrocatalysis and materials. Quarterly report, July 1-September 30, 1979

Technical Report · Sat Mar 01 04:00:00 EST 1980

DOI:https://doi.org/10.2172/6814753· OSTI ID:6814753

Srinivasan, S.; Isaacs, H. S.; McBreen, J.; O'Grady, W. E.; Olender, H.; Olmer, L. J.; Schouler, E. J.L.; Adzic, R. R.

The effect of underpotential deposited metal layers on the electrocatalysis of fuel cell reactions was studied. It was found that Bi, Ag and Pb form underpotential deposited metal adatom layers on gold in 85% H/sub 3/PO/sub 4/. Underpotential deposited Bi enhances oxygen reduction on gold with the formation of peroxide. Underpotential deposited Ag on the other hand inhibits oxygen reduction. Results indicate the potential for developing organic compound/air fuel cells using underpotential deposited Pb adatoms to enhance the electrocatalysis of the fuel electrode. The effects of adsorbed layers of Pb, Tl and Bi on formic acid and methanol oxidation on platinum in 85% H/sub 3/PO/sub 4/ were investigated. The effect of crystal orientation on formic acid oxidation on platinum in 1 M CHlO/sub 2/ was investigated. The kinetics of the oxygen reduction and evolution reactions at the electrode (metal or oxide)-solid electrolyte (yttria stabilized zirconia) interface were investigated using ac and dc techniques. Platinum point contact electrodes were also used in the preliminary studies of the fuel electrode reaction. dc, ac and potential sweep methods were used in this study. Results are reported. Progress on a survey of status studies of phosphoric acid and molten carbonate fuel cells is reported. (WHK)

• Research Organization: Brookhaven National Lab., Upton, NY (USA)
• DOE Contract Number: AC02-76CH00016
• OSTI ID: 6814753
• Report Number(s): BNL-51198
• Country of Publication: United States
• Language: English

Related Subjects

30 DIRECT ENERGY CONVERSION
300501 -- Fuel Cells-- Design & Development
300505* -- Fuel Cells-- Electrochemistry
Mass Transfer & Thermodynamics
ACID ELECTROLYTE FUEL CELLS
ALCOHOLS
CARBOXYLIC ACIDS
CATALYSTS
CHEMICAL REACTIONS
CHEMISTRY
DIRECT ENERGY CONVERTERS
ELECTROCHEMICAL CELLS
ELECTROCHEMISTRY
ELECTROLYTES
ELEMENTS
FORMIC ACID
FUEL CELLS
HIGH-TEMPERATURE FUEL CELLS
HYDROGEN COMPOUNDS
HYDROXY COMPOUNDS
INORGANIC ACIDS
KINETICS
METALS
METHANOL
MOLTEN CARBONATE FUEL CELLS
MONOCARBOXYLIC ACIDS
NONMETALS
ORGANIC ACIDS
ORGANIC COMPOUNDS
OXIDATION
OXYGEN
PLATINUM METALS
REACTION KINETICS
REDUCTION
RESEARCH PROGRAMS
TRANSITION ELEMENTS