MoS2-Nanosheet-Decorated Carbon Nanofiber Composites Enable High-Performance Cathode Materials for Mg Batteries

In rechargeable Mg batteries, kinetically reasonable and electrolyte-compatible cathode materials are required to achieve high electrochemical performance. Here, we report a high-performance rechargeable Mg battery cathode material that is constructed from layered structural MoS2 nanosheets decorated on conductive nitrogen-doped carbon nanofibers (N-CNFs@MoS2). We demonstrate that N-CNFs@MoS2 exhibits good electrochemical compatibility in two types of dual-salt electrolytes including an all-phenyl complex with lithium chloride (LiCl-APC) and bis(trifluoromethane)sulfonimide lithium salt with magnesium chloride (MgCl2-LiTFSI). The fabricated N-CNFs@MoS2-Mg batteries based on both dual-salt electrolyte systems exhibit good cyclic stability and high rate performance.