Scalable Composites Benefiting from Transition?Metal Oxides as Cathode Materials for Efficient Lithium?Sulfur Batteries

Composite materials achieved by including transition-metal oxides with different structures and morphologies in sulfur are suggested as scalable cathodes for high-energy lithium-sulfur (Li-S) batteries. The composites contain 80 wt.% 20 of either MnO2 or TiO2, leading to a content the electrode 64 revealing reversible, fast, lowly polarized conversion process cell limited interphase resistance. S-TiO2 composite exhibits an excellent rate capability between C/10 2C, cycle life extended over 400 cycles at owing effects nanometric TiO2 additive boosting reaction kinetics. Instead, micrometric sized particles partially limit electrochemical activity S-MnO2 current 1C. Nevertheless, both withstand loading up values approaching 6 mgcm-2, deliver areal capacit ranging from about 4.5 5.5 mAhcm-2 C/5. performances metal oxide-sulfur electrodes, even high active material loading, possible scalability synthetic pathway adopted work suggest that viable next-generation Li-S batteries energy density efficient process.