Ferroelectric‐Enhanced Polysulfide Trapping for Lithium–Sulfur Battery Improvement

A brand new polysulfide entrapping strategy based on the ferroelectric effect has been demonstrated for the first time. By simply adding the nano-ferroelectrics (BaTiO₃ nanoparticles) into the cathode, the heteropolar polysulfides can be anchored within the cathode due to the internal electric field originated from the spontaneous polarization BaTiO₃ nanoparticles, and thus significantly improving the cycle stability of Li-S batteries.