Button prim. cell with high energy density - uses light metal negative electrode and lead selenite positive electrode in non aq. electrolyte

摘要

Electrolyte is pref. a 1 molar solb. of lithium-perchlorate, hexaflurooarsenate, or -trifluoromethanesulphonate, in a solvent which is propylene carbonate and/or dimethyl ether. The positive electrode mass is pref. mixed with 5 wt% graphite and 1 wt% PTFE; and electrode is pref. Li. The lead selenite is made for SeO2 and lead acetate in 75% acetic acid, so the selenite is pptd. washed with alcohol and ether, then dried at 90 degrees C. without decompsn. to obtain a 97% yield. The low solubility of the selenite provides long battery life. The cell has high energy density w.r.t. the vol. of the battery, and good shelf life.