STUDY OF THE COMPOSITION OF NONAQUEOUS SOLUTIONS OF POTENTIAL USE IN HIGH ENERGY DENSITY BATTERIES.
Final rept. 1 Sep 66-31 Aug 69,
TYCO LABS INC WALTHAM MASS
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Electrochemical studies have been made of the solution thermodynamics of potential high energy battery electrolytes and cathode materials in the aprotic organic solvents propylene carbonate PC, dimethyl formamide DMF, and dimethyl sulfoxide DMSO. These studies have included a comprehensive survey of reversible reference electrode systems, and a specific experimental review of chloride reversible electrodes based on silver, thallium, lead, and cadmium. Detailed measurements have been made of the activity coefficients and solution thermodynamics of lithium chloride in these solvents. The solubility and complex formation equilibria of silver halides have also been studied in detail, and their relation to solvation phenomena is discussed. The general conclusion reached from these studies is that solvents in which active metals are stable also promote the stability of anionic complexes of transition metals. Preliminary studies have been made of equilibria in chloroaluminate and complex fluoride electrolytes using electrochemical methods. Nuclear magnetic resonance nmr studies have been made of the solvation of lithium perchlorate in PC-water mixtures and of the association of water in PC. Author
- Physical Chemistry
- Electrochemical Energy Storage