A freestanding nitrogen-doped MXene/graphene cathode for high-performance Li-S batteries.

ABSTRACT: Lithium-sulfur batteries (LSBs) take a leading stand in developing next-generation secondary batteries with an exceptionally high theoretical energy density. However, the insulating nature and undesirable shuttle effect still need to be solved to improve the electrochemical performance. Herein, a freestanding graphene supported N-doped Ti₃C₂T _x MXene@S cathode is successfully synthesized via a straightforward no-slurry method. Due to its unique hierarchical microstructure, the MXene-C/S ternary hybrids with high capacity can effectively adsorb polysulfides and accelerate their conversion. Cooperatively, conductive rGO can ameliorate N-MXene nanosheet' restacking, making the lamellar N-Mxene coated sulfur particles disperse uniformly. The assem

SUBMITTER: Yuanzheng L 

PROVIDER: S-EPMC9419821 | biostudies-literature | 2022 May

REPOSITORIES: biostudies-literature