ISSN 1608-4039 (Print)
ISSN 1680-9505 (Online)

For citation:

Yurina E. S., Varlamova T. M., Ovsyannikov V. M. Density and electrical conductivity of LiClO4, LiBF4 and LiPF6 solutions in mixes diethyl carbonate – propylene carbonate. Electrochemical Energetics, 2003, vol. 3, iss. 2, pp. 75-?.

This is an open access article distributed under the terms of Creative Commons Attribution 4.0 International License (CC-BY 4.0).
Language: 
Russian
Article type: 
Article

Density and electrical conductivity of LiClO4, LiBF4 and LiPF6 solutions in mixes diethyl carbonate – propylene carbonate

Autors: 
Yurina E. S., Ivanovo State Chemical and Technological University
Varlamova T. M., Saratov State University
Ovsyannikov V. M., Saratov State University
Abstract: 

The method of a densimetry and conductometry was study of physico-chemical properties of triple systems LiX–DEC – PC in an interval 10-50°C with salt concentrate 0,1-2,25 M (where X-ClO4, BF6, PF6; a ratio of weights of solvents changed 25:75, 50:50, 75:25 mas.% accordingly). In a double system diethyl carbonate (DEC) – propylene carbonate (PC) was found formation of an intermolecular associate of a structure 1:1. Density electrolyte of solutions linearly varies both with increase of concentration of salt, and with temperature rise. The concentration dependence of electrical conductivity (ae) has extreme nature. The maximum is in the field of salt content 0,75-1,25 M depending on a structure of a binary solvent. The temperature coefficient of electrical conductivity for all salts a little bit increases in process of increase of the contents of the PC. At any concentration and temperature, the salt can be arrange according to their conductivity: PF6, > ClO4 > > BF2.