Accession Number:

AD0435878

Title:

FUEL CELLS.

Descriptive Note:

Quarterly progress rept., 1 Apr-30 June 63,

Corporate Author:

FLORIDA UNIV GAINESVILLE ENGINEERING AND INDUSTRIAL EXPERIMENT STATION

Personal Author(s):

• Walker,Robert D. ,Jr.

Report Date:

1963-08-12

Pagination or Media Count:

24.0

Abstract:

Mass transfer in solid metal electrodes was studied intensively with a view to defining the total transfer process so as to permit a reasonably accurate calculation of the resistances to mass transfer of the several steps. A model for the transfer process is presented and the several steps discussed. It appears that mass transfer from the bulk gas cannot be calculated until more is known about the absorption processes occurring at the gas-metal interface. Methods of measuring gas solubility and diffusivity in fuel cell electrolytes are dascussed and the results of preliminary measurements presented. A polarographic method appears satisfactory for measuring the diffusivity of oxygen in KOH solutions, and a chromatographic method appears suitable for determining gas solubility. Author

Descriptors:

• *DIFFUSION
• ELECTRODES
• FUEL CELLS
• ELECTRODES
• SORPTION
• DISSOCIATION
• IONIZATION
• GASES
• ELECTROLYTES
• OXYGEN
• SOLUBILITY
• TRANSPORT PROPERTIES
• MATHEMATICAL MODELS
• METALS
• SURFACES
• HYDROGEN
• PALLADIUM

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE