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A separator modified by barium titanate with macroscopic polarization electric field for high-performance lithium-sulfur batteries.
Nanoscale
March 2023
State Key Laboratory of Powder Metallurgy, Central South University, Changsha, Hunan 410083, People's Republic of China.
The detrimental "shuttling effect" of lithium polysulfides and the sluggish kinetics of the sulfur redox reaction in lithium-sulfur batteries (LSBs) impede the practical application. Considering the high polar chemistry facilitates the anchoring of polysulfides, ferroelectric materials have gradually been employed as functionalized separators to suppress the "shuttling effect". Herein, a functional separator coated with BaTiO with a macroscopic polarization electric field (poled-BaTiO) is designed for retarding the problematic shuttle effect and accelerating redox kinetics.
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