Development of Cathode Materials for Room Temperature Lithium/Sulfur Batteries

The demand for high energy batteries is increasing day by day due to recent advances in portable electronic devices, which require high energy and power to run. Current Li-ion technology that has been predominant for the last 20 years has reached its limit and can hardly deliver a specific capacity of 170 mA h g-1. Moreover, recent electric vehicle (EV) and hybrid electric vehicle (HEV) technology demands high gravimetric and volumetric energy density batteries so that the vehicle can run for 400 to 500 km with a single charge. Considering all these facts, there is a crying need to find an alternative material that has high theoretical energy density along with low cost and environmental benignity.