Electrochemical Lithium Power Systems for Hydrospace.
Abstract
Electrochemical cells consuming lithium and water were constructed and operated safely. The effect of lithium hydroxide electrolyte concentration temperature and cell configuration on the voltage, efficiency, and power output were studied. Energies exceeding 1500 watt-hours per pound of lithium were obtained at powers of 160 watts per square foot, provided that the lithium hydroxide concentration and temperature were maintained at the optimized values. Coulombic efficiency increases as more power is drawn from the cell. Elevating temperatures above 25 C tended to lower efficiency by increasing the hydrogen self-discharge. However, higher temperature increases the amount of power available by increasing product solubility and decreasing activation losses. Studies of concentration effects indicate that maximum energy utilization of lithium can be achieved between 3.50 and 3.70 molar lithium hydroxide concentration at temperatures between 15 and 25 C. From the experimental data, a study was made of various multiple cell arrangements. Three configurations were studied, all having a square foot of single cell area and varying cell thickness.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 1974
- Accession Number
- ADA062949
Entities
People
- D. E. Icenhower
- David W Taylor
- H. B. Urbach
- M. C. Cervi