In‐Situ Grafting Strategy Enables Functional Separator for Advanced Lithium‐Sulfur Batteries

A functional separator is developed by in-situ grafting nickel tetraaminophthalocyanine (NiTAPc) onto the surface of polypropylene (PP). It is applied to inhibit the shuttle effect of polysulfides (PSs) in lithium-sulfur(Li-S) batteries. The characterization results showed that NiTAPc is highly dispersed and uniformly grafted onto PP separator. In-situ grafting strategy effectively mitigates the self-agglomeration issue associated with NiTAPc and enhances the exposure of catalytically active Ni-N