LiSi and LiB as Anodes in Chloroaluminate Thermal Batteries.
Abstract
Lithium silicon (40 weight percent Li) and lithium boron were studied as anode materials in chloroaluminate thermal cells and were compared with lithium aluminum. Lithium boron anodes were tested only at a single temperature (200 C) because of low availability whereas lithium silicon was studied over the temperature range 175 to 275 C. The current density range was 15 to 150 mA/sq cm. The results showed that lithium silicon behaved like lithium aluminum, with linear polarization over over the current densities studied. The internal resistances were the same at all temperatures. On the other hand, lithium boron displayed an activation overpotential at current densities less than 50 mA/sq cm. At higher current densities, an internal resistance of less than 0.19 omega was indicated for the lithium boron-anode cells. This study shows that LiSi offers no advantage over lithium aluminum as an anode for chloroaluminate thermal cells. However, LiB promises to be a superior anode material at high current densities. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 1980
- Accession Number
- ADA081300
Entities
People
- Robert L. Vaughn
Organizations
- Air Force Research Laboratory