Abstract：
The confinement and high utilization of sulfur in the cathodes is critical for improved cycling performance of lithium-sulfur batteries. In this case one-pot hydrothermal strategy is developed to produce rGO/MXene/sulfur composite aerogels where sulfur is in situ trapped in the 3D rGO/MXene conductive skeleton. The optimized composite aerogels as free-standing cathodes delivery a specific capacity of 951 mAhg-1 after 100 cycles at 0.2 C with a low fading rate of 0.062% per cycle. The excellent cycling performance is correlated with highly oxidized MXene and in situ formed sulfate/thiosulfate complex layer in the long-term cycles.
摘要：
阴极中硫的限制和高利用率对于改善锂-硫电池的循环性能至关重要。在这种情况下，开发了一锅法水热策略来生产rGO/MXene/硫复合气凝胶，其中硫就地捕获在3DrGO/MXene导电骨架中。优化的复合气凝胶作为独立式阴极，在0.2C下进行100次循环后可提供951mAhg-1的比容量，每个循环的褪色率为0.062％。优异的循环性能与长期循环中高度氧化的MXene和原位形成的硫酸盐/硫代硫酸盐复合物层相关。
