The Two Electron Oxidation of Cobalt Phthalocyanines by Thionyl Chloride: Implications for Lithium/Thionyl Chloride Batteries
YORK UNIV DOWNSVIEW (ONTARIO) DEPT OF CHEMISTRY
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Cyclic voltammetry, DPV and electronic spectroscopy are used to study the reaction between thionyl chloride and cobalt phthalocyanine. SOC12 reacts with CoITn Pc2- and CoIITn Pc2- to give two-electron oxidized species. Implications for LiSOC12 batteries are discussed. Thionyl chloride also forms a mono SOC12 adduct with CoIITnPc2-. Driving forces Delta E values have been calculated for CoTnPc comproportionation and CoTnPc SOC12 reactions. Rest potential measurements of a LiSOC12 cells show that addition of A1C13 stabilizes the LiC1 product as LiA1C14. A catalytic two-electron mechanism is indicated for the reduction of thionyl chloride in a LiSOC12CoTnPc,C battery. Keywords Electric batteries Phthalocyanine Lithium battery, Thionyl chloride Two electron oxidation Aluminum Cobalt.
- Electrochemical Energy Storage