Applications of porous electrodes to metal-ion removal and the design of battery systems
Use of porous electrodes as electrochemical reactors for removal of dilute metal ions is first treated. Second, a methodology for the scale-up of porous electrodes used in battery applications is given. The removal of 4 ..mu..g Pb/cc in 1 M sulfuric acid feed streams was investigated in atmospheric and high-pressure, flow-through porous reactors. Of primary concern is the ability of the reactor to remove lead in the presence of a competing hydrogen side reaction. The atmospheric reactor used a reticulated vitreous carbon porous bed coated in situ with a mercury film. Best results show a 98% removal of lead for the feed stream. Experimental data of one-dimensional porous battery electrodes are combined with a model for the current collector and cell connectors to predict ultimate specific energy and maximum specific power for complete battery systems. Discharge behavior of the plate as a whole, including the effects of the electrochemical resistance and grid (current-collector) resistance, is first presented as a function of depth of discharge. Results are combined with the voltage and weight penalties of the interconnecting bus and post, positive and negative active material, cell container, etc. to give specific results for the lithium-aluminum/iron sulfide high-temperature battery. Subject of variation are the number of positive electrodes, grid conductivity, minimum current-collector weight, and total delivered capacity. The battery can be optimized for maximum energy or power, or a compromise design may be selected.
- OSTI ID:
- 6374723
- Resource Relation:
- Other Information: Thesis (Ph. D.)
- Country of Publication:
- United States
- Language:
- English
Similar Records
Power versus energy trade-off studies for lithium-alloy/iron sulfide cells
Rechargeable high-voltage low-temperature molten-salt cell Na/. beta. ''-alumina/SCl/sub 3//sup +/ in AlCl/sub 3/-NaCl. Final report
Related Subjects
30 DIRECT ENERGY CONVERSION
ELECTRIC BATTERIES
ION-SELECTIVE ELECTRODES
HIGH-TEMPERATURE FUEL CELLS
PERFORMANCE
EXPERIMENTAL DATA
POROSITY
DATA
DIRECT ENERGY CONVERTERS
ELECTROCHEMICAL CELLS
ELECTRODES
FUEL CELLS
INFORMATION
NUMERICAL DATA
250901* - Energy Storage- Batteries- Design & Development
300503 - Fuel Cells- Materials
Components
& Auxiliaries