Lithium Sulfur batteries are thought to be the next generation energy storage device, because of their high theoretical capacity and energy density. At the moment, their practical application is hindered by several issues, for example fast degradation, low Sulfur (S) utilization or the often too low S loadings to give high areal capacities. Here, a Sulfur/Carbon-composite (S/C-composite) is introduced, which can be synthesised by an easy bottom-up approach with a high S-content in the resulting powder. The existence and appearance of S on the carbon support was investigated by XRD and SEM/EDX and the S amount was measured by TGA. The influence of two different synthesis routes, cell storage before cycling, S loading on the cathode, different carbon supports, use of a polysulfide enriched electrolyte as well as novel electrolyte solvent and additive on the cycling behavior of the S/C-composite cathode were examined by galvanostatic cycling of test cells.
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Lithium Sulfur batteries are thought to be the next generation energy storage device, because of their high theoretical capacity and energy density. At the moment, their practical application is hindered by several issues, for example fast degradation, low Sulfur (S) utilization or the often too low S loadings to give high areal capacities. Here, a Sulfur/Carbon-composite (S/C-composite) is introduced, which can be synthesised by an easy bottom-up approach with a high S-content in the resulting...
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