INSIGHTS INTO THE ABSORPTION MECHANISM OF CARBON NANOTUBE PAPER-TITANIUM DIOXIDE AS A MULTIFUNCTIONAL BARRIER FOR LITHIUM-SULFUR BATTERIES

摘要

Lithium-sulfur (Li-S) batteries are considered to be one of thernmost promising energy storage devices in next generation highrnenergy power system, owing to their high specific capacity (1675rnmAh g~(-1)) and energy density (2600 Wh kg~(-1)). However, therninsulation of sulfur and high solubility of lithium polysulfides in thernorganic electrolyte lead to the low utilization of active materials andrnthe poor cycling performance, which seriously impede the rapidrndevelopment of Li-S batteries.