C. Liebenow
Nov 2, 2000
Citations
0
Influential Citations
14
Citations
Journal
Solid State Ionics
Abstract
Abstract The electrolytic behaviour of ethylmagnesium bromide in poly(ethylene oxide) was investigated. Besides polymeric ether, the electrolyte solution contained a small amount of monomeric ether (THF or DEE). Best conductivities were obtained with an ethylene oxide to Mg ratio of 4. For the electrolyte system EtMgBr–P(EO) 4 –DEE, an electrical conductivity of 0.1 mS cm −1 at 40°C was found. Using these electrolytes, magnesium can be deposited by cathodic reduction as well as dissolved by anodic oxidation. For a magnesium electrode in contact with these electrolytes, an OCV of −1.9 V (vs. Ag–AgCl) was measured. The kind of monomer ether influences significantly the structure of the electrolyte systems. DSC and XRD measurements of the THF-containing electrolytes showed a decrease in content of the crystalline PEO phase with increasing content of EtMgBr, which is not the case for the DEE-containing systems.