Accession Number : AD0857191

Title :   Nonaqueous Electrolyte Systems. Transport Behavior in Dimethyl Sulfoxide. I. Conductance Studies.

Descriptive Note : Interim technical rept. no. 3,

Corporate Author : CALIFORNIA UNIV LOS ANGELES SCHOOL OF ENGINEERING AND APPLIED SCIENCE

Personal Author(s) : Yao, Neng-Ping ; Bennion, Douglas N.

Report Date : JUN 1969

Pagination or Media Count : 189

Abstract : Density, viscosity, and conductance of the salts NaClO4, NaSCN, CF3SO3Na, CH3SO3Na, NaB(Ph)4, and (i-amyl)3BuNB(Ph)4 in dimethyl sulfoxide (DMSO) were determined over a concentration range 0.0001 mole/1 to near saturation and a temperature range 25 to 55C. Conductance data were analyzed by the Fuoss-Onsager conductance equation. Limiting ionic mobilities for the ions at infinite dilution were obtained as a function of temperature assuming equal limiting mobilities for (i-amyl)3BuN(+) and B(Ph)4(-) ions in DMSO. Comparison of the effective ionic radii with crystallographic radii shows that the Na(+) ion is solvated with two DMSO molecules while the (i-amyl)3BuN(+) ion and the anions are relatively unsolvated. The effective ionic radii in DMSO are insensitive to temperature over the temperature range studied. Activation energies for ionic conductance in dilute solutions of (i-amyl)3BuNB(Ph)4, NaB(Ph)4, NaClO4, CF3SO3Na, and NaSCN are reported. Ionic transport in DMSO appears to be limited principally by viscous drag. (Author)

Descriptors :   *BATTERY COMPONENTS, *SULFOXIDES, *ELECTROLYTES, *ORGANIC SOLVENTS, ELECTRICAL CONDUCTIVITY, SOLUTIONS(MIXTURES), PERCHLORATES, THIOCYANATES, SULFONATES, BORATES, AMMONIUM COMPOUNDS, IONS, HEAT OF ACTIVATION, TRANSPORT PROPERTIES, VISCOSITY, SODIUM COMPOUNDS.

Subject Categories : Physical Chemistry
      Electrochemical Energy Storage

Distribution Statement : APPROVED FOR PUBLIC RELEASE