Frontiers in Materials (Oct 2019)
The Effects of Pore Size on Electrical Performance in Lithium-Thionyl Chloride Batteries
Abstract
Lithium-thionyl chloride batteries possess the highest specific energies of the batteries that are commercially available. These batteries also have high operating voltages, stable outputs, wide operating temperature ranges, and long storage lives and are of low cost. The main limitation of lithium-thionyl chloride batteries is their low discharge capacity at high discharge rates, which limits their commercial uses. In this study, a porous cathode carbon support was prepared by introducing ammonia bicarbonate as a pore-forming agent. The porous cathode carbon support that formed was systematically characterized by BET, SEM, and XRD. The support was then assembled into an ER18505M battery system, and the electrochemical performance of the battery was characterized. The effect of pore structure on the electrochemical performance was determined and enabled the preparation of a high capacity lithium-thionyl chloride battery with a high discharge rate.
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