ELECTROCHEMICAL CELLS HAVING NOVEL CATHODE COMPOSITIONS

摘要

Electrochemical cells of the non-aqueous type have a cathode composition consisting of a solid complex of sulphur trioxide and a polymeric tertiary amine eg. polyvinyl pyridine or polymethyl pyrrole. High energy density is achieved by virtue of the high EMF generated in a cell which has an alkali or an alkaline earth metal as the anode. The compositions are especially suitable for secondary cells since the micro-structure of the polymeric complex is essentially maintained after the incorporation of metal ions. The utilisation of sulphur trioxide as a solid complex obviates the presence of the highly corrosive liquid material in contact with the alkali or alkaline earth metal anode and the cell container and results in a battery system having long storage and service life.