Porous sulfur/carbon composite role in solving the limitations of Li-S batteries: A Case Study

In recent years, Li-ion batteries have become the most widespread among rechargeable battery systems as they possess the highest energy density and specific energy. Among green energy storage devices, lithium-sulfur battery is an important type of Li-ion batteries and is expected to play a leading role in the development of such devices. However, the efficiency of lithium-sulfur batteries has been restricted by the dissolution of polysulfides in the electrolyte and also the poor electrical conductivity of sulfur. The use of porous sulfur/carbon composite in Li-S batteries, has restricted these drawbacks and improved the overall electrochemical and cycling performance of these batteries via enhancing the electrical conductivity of sulfur electrode, trapping the dissolved sulfides and suppressing its migration in the electrolyte, increasing electrolyte and Li+ ions transport as well as raising sulfur loading. Hence, this study case focused on the drawbacks of Li-S batteries and their respective solutions suggested in the previous works via utilization of porous carbon/sulfur cathode.