Sulfur-containing active materials and carbon-sodium batteries
The theoretical energy density of Li–S battery (2600 W h kg −1) is almost 6 times higher than that of commercial LIBs (387 W h kg −1 for LiCoO 2 –graphite battery), so it has a great potential to satisfy a traveling distance of 500 km for EVs [3], [10].Furthermore, S is one of the most abundant elements in the Earth''s crust, and therefore the cost of S is much …