Figure 1: Concept of a sulphur-impregnated carbon composite flow cathode.
From: Sulphur-impregnated flow cathode to enable high-energy-density lithium flow batteries

(a) Schematic representation of a nonaqueous lithium flow battery using (b) a polysulphide flow cathode12,22,23; (c) mechanically mixed intercalation flow cathode13,24; and (d) a new flow-cathode structure employing sulphur-impregnated Ketjen black composite suspended in the nonaqueous electrolyte described in this study.