fig4
Figure 4. (A) Working mechanism of modified separator in Li-S battery. Reproduced with permission from Ref.[38] (Copyright 2021, Elsevier). (B) LiX zeolite membrane-coated Celgard is used as the design principle of the separator. Reproduced with permission from Ref.[39] (Copyright 2020, Elsevier). (C) Schematic diagram of the synthesis of the CoFe@NC. Reproduced with permission from Ref.[40] (Copyright 2021, Elsevier). (D) Comparison of thermal stability of pp and NiFe2O4 QDs@g-C3N4/PP. Reproduced with permission from Ref.[42] (Copyright 2022, The Royal Society of Chemistry).
