Over the past two hundred years, human history has been closely linked to energy sources development. Coal, oil and other fossil fuels have made possible the evolution of society, as we know it today. However, the unbridled use of these non-renewable and highly polluting resources has prompted the scientific community to seek other solutions. Thus renewable energies (in particular, wind and solar power) have been introduced on the market, supported by the batteries development: essential devices capable of storing and moving energy even in periods and places where such resources are not available. The following thesis work deepens the state of the art of one of the most recent and promising classes of batteries, the Lithium-Sulfur ones.