Composition of Nonaqueous Solutions of Potential Use in High Energy Density Batteries.
Final rept. 15 Nov 69-14 Nov 72,
TYCO LABS INC WALTHAM MASS
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Rational development of high energy density batteries based on aprotic organic electrolytes requires considerable physiochemical knowledge of these electrolytes and their interaction with electrodes used in batteries. In many cases, the solubility and reactivity of the cathode material have proven to be the most important factor in determining the shelf life of prototype batteries. These parameters may depend critically on small amount of impurities, such as water or other organic solvents, which may be present in the electrolyte used to prepare an actual cell. The scope of the report includes studies of the solubility equilbria of such potential cathode materials as CuF2, NiF2, ZnF2, CdF2, and AgF2 in aprotic solvents such as dimethyl sulfoxide DMSO, dimethyl formamide DMF, and PC. The program also encompasses studies of the coordination of ions by the solvent and by common impurities e.g., water. Techniques used in these studies include potentiometry, absorption spectroscopy, and NMR techniques.
- Physical Chemistry
- Electrochemical Energy Storage