High-Performance Lithium Sulfur Batteries Based on Multidimensional Graphene-CNT-Nanosulfur Hybrid Cathodes

Although lithium-sulfur (Li-S) batteries are one of the promising candidates for next-generation energy storage, their practical implementation is limited by rapid capacity fading due to lithium polysulfide (LiPSs) formation and low electronic conductivity sulfur. Herein, we report a high-performance battery based on multidimensional cathode architecture consisting nanosulfur, graphene nanoplatelets (2D) multiwalled carbon nanotubes (1D). The ultrasonic synthesis method results in generation sulfur nanoparticles intercalation into multilayered nanoplatelets. optimized graphene-sulfur-CNT hybrid (GNS58-CNT10) demonstrated high specific (1067 mAh g−1 @ 50 mA g−1), rate performance (539 1 A coulombic efficiency (~95%) cycling stability (726 after 100 cycles 200 g−1) compared reference cathode. Superior electrochemical performances credited encapsulation nanosulfur between individual layers with conductivity, effective trapping MWCNT bundles.