Fabrication and testing of TAA bonded carbon electrodes. Final report, March 1978 - May 1979
The objective of this program is to evaluate metallated dihydrodibenzo tetraazannulene (TAA) as a primary fuel-cell cathode catalyst where the TAA is covalently bonded to the conductive cathode matrix. Under the program, cobalt TAA was demonstrated to be an active oxygen dissolution reaction catalyst; bonded cobalt TAA was also demonstrated to be stable in a primary fuel cell with performance data obtained for a one month full cell test. Details of some of the key results and achievements are presented. Cobalt TAA bonded to Vulcan XC-72 was shown to be stable in 150/sup 0/C concentrated phosphoric acid for periods of over one month. Cathodes fabricated from cobalt TAA bonded to Vulcan XC-72 were tested in primary fuel cells: preliminary tests showed that bonded-CoTAA has activity similar to platinum on a per weight metal basis; performance of 100 mA/cm/sup 2/ at 650 to 700 mV vs hydrogen was obtained at 110/sup 0/C with oxygen. Bonded-CoTAA catalyzed cathodes were tested in primary fuel cells for periods of up to one month and shown to provide stable performance at 110 to 130/sup 0/C. Bonding of TAA was shown to improve its catalytic performance.
- Research Organization:
- Eco-Control, Inc., Cambridge, MA (USA)
- DOE Contract Number:
- AC03-78ET11303
- OSTI ID:
- 7013551
- Report Number(s):
- DOE/ET/11303-T8
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
30 DIRECT ENERGY CONVERSION
300503* -- Fuel Cells-- Materials
Components
& Auxiliaries
ACID ELECTROLYTE FUEL CELLS
ANODES
AZINES
BONDING
CARBON
CATALYSTS
CATHODES
CHEMICAL PREPARATION
COBALT COMPLEXES
COMPLEXES
CURRENT DENSITY
DIRECT ENERGY CONVERTERS
ELECTROCATALYSTS
ELECTROCHEMICAL CELLS
ELECTRODES
ELEMENTS
FABRICATION
FUEL CELLS
HETEROCYCLIC COMPOUNDS
HYDROGEN
HYDROGEN COMPOUNDS
INORGANIC ACIDS
IRON COMPLEXES
JOINING
MANGANESE COMPLEXES
NICKEL COMPLEXES
NONMETALS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
OXYGEN
PERFORMANCE TESTING
PHOSPHORIC ACID
POISONING
SYNTHESIS
TESTING
TRANSITION ELEMENT COMPLEXES
300503* -- Fuel Cells-- Materials
Components
& Auxiliaries
ACID ELECTROLYTE FUEL CELLS
ANODES
AZINES
BONDING
CARBON
CATALYSTS
CATHODES
CHEMICAL PREPARATION
COBALT COMPLEXES
COMPLEXES
CURRENT DENSITY
DIRECT ENERGY CONVERTERS
ELECTROCATALYSTS
ELECTROCHEMICAL CELLS
ELECTRODES
ELEMENTS
FABRICATION
FUEL CELLS
HETEROCYCLIC COMPOUNDS
HYDROGEN
HYDROGEN COMPOUNDS
INORGANIC ACIDS
IRON COMPLEXES
JOINING
MANGANESE COMPLEXES
NICKEL COMPLEXES
NONMETALS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
OXYGEN
PERFORMANCE TESTING
PHOSPHORIC ACID
POISONING
SYNTHESIS
TESTING
TRANSITION ELEMENT COMPLEXES