lithium electrode

The effect of lithium polysulphides on the cyclic deposition/and dissolution of lithium metal on an inert stainless steel electrode and on a lithium metal electrode in sulfolane solutions has been studied. It has been shown that the addition of lithium polysulphides to sulfolane solutions leads to a significant increase in the cycle life (2 or more times) and cycling efficiency of a lithium metal electrode and a lithium metal on inert stainless steel electrode. It also results in the reduction of the corrosion rate of the lithium cathodic deposits.

The analysis of electrochemical impedance of lithium-sulfur cells is complicated by the complexity of the processes occurring inside them. Both electrochemical processes and mass transport processes simultaneously occur on the lithium and sulfur electrodes of the cells, as well as in the bulk electrolyte. A comparative analysis of the distribution functions of relaxation times of symmetric Li||Li, S||Sand and the full lithium-sulfur cell has been conducted.