2021 roadmap on lithium sulfur batteries
The rapid developments in portable electronic devices, electric vehicles and smart grids are driving the need for high-energy (>500 W h kg −1) secondary (i.e. rechargeable) batteries.Although the performance of LIBs continues to improve [], they are approaching their theoretical specific energy (∼387 Wh kg −1) using LiCoO 2 [3, …