Accession Number:

AD0718109

Title:

Purification and Analysis of Organic Nonaqueous Solvents.

Descriptive Note:

Final rept. 1 Oct 67-30 Sep 70,

Corporate Author:

TYCO LABS INC WALTHAM MASS

Report Date:

1970-12-29

Pagination or Media Count:

247.0

Abstract:

In order to make possible a rigorous program of research and development of high energy battery systems based on aprotic organic electrolytes and lithium anodes, a literature survey and a number of experimental studies have been conducted on the purification and analysis of relevant solvents acetonitrile, butyrolactone, dimethyl sulfoxide, dimethyl formamide, formamide, hexamethyl phosphoramide, N-methyl pyrrolidone, propylene carbonate, and tetrahydrofuran. In all cases, methods have been developed where not already available for purification to a level of less than 10 ppm water or organic impurities, and for analysis of the solvents at that purity level. Stability of the pure solvents, particularly in contact with lithium electrodes, has been examined critically. For the solvents propylene carbonate, dimethyl sulfoxide, dimethyl formamide, and hexamethyl phosphoramide, the exchange current of a solid lithium electrode has been determined and the effect of added water on this kinetic parameter has been studied. Author

Subject Categories:

  • Organic Chemistry
  • Electrochemical Energy Storage

Distribution Statement:

APPROVED FOR PUBLIC RELEASE