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The rGO/sulfur composite cathode prepared on a lab scale, using supercritical CO2 assisted impregnation, showed an initial discharge capacity of 1024 mAh/g at 0.1C rate.T he developed cells showed excellent performance (929 mAh/g at 1 C rate) with an ultralow decay of 0.04% per cycle even after 200 charge-discharge cycles. 

© BME, Research Group on Supercritical Fluids, 2015