▎ 摘　　要

Developing scalable and facile techniques to design and construct unique structures of cathodes with high performance is challenging for the practical Li-S batteries. In this work, highly effective and scalable cathodes based on curved graphene/MXene bi-nanosheets-constituted fibers is demonstrated for long-lifetime Li-S batteries. Wet-spinning is introduced to design and fabricate sulfur cathodes based on graphene/MXene hybrid fibers, in which sulfur is uniformly distributed and intimately enveloped between graphene and MXene nanosheets. The high chemical affinity towards polysulfides enabled by MXene is demonstrated by experiments and density functional theory (DFT) calculations. The assembled cells show high sulfur utilization (the discharge capacity of 1483.1 mAh g(-1) at 0.1 C), high rate performance (733.3 mAh g(-1) at 2 C) and excellent long cycle stability (0.043% per cycle decay at 1 C over 10 0 0 cycles). Moreover, a reversible areal capacity of 5 mAh cm(-2) is achieved under a high sulfur loading of 5.6 mg cm(-2), revealing its great potential for practical applications. This study gives a valuable guidance to design advanced sulfur cathodes for high-performance Li-S batteries. (C) 2021 Elsevier Ltd. All rights reserved.