Synergistic effects of confinement structure and expanded interlayer spacing on MoS2/C towards high-efficient rate and cycle performance

Transition-metal sulfides (TMSs) are promising cathode materials for all-solid-state lithium batteries (ASSLBs) but suffer from poor electronic conductivity and severe volume expansion. We developed MoS 2 /C nanospheres featuring expanded interlayer spacing (0.71 nm) through facile hydrothermal synthesis. The radially arranged nanosheet architecture maximizes electrochemically active edge sites, while the expanded interlayers enhance Li + diffusion kinetics. The in-situ formed carbon layer provides dual benefits: structural confinement to suppress volume changes and improved electronic conductivity. The MoS 2 /C nanospheres deliver exceptional capacity of 385.1 mAh g −1 after 250 cycles at 1C, substantially outperforming bulk MoS 2 and MoS 2 nanosheets. This synergistic design combining interlayer expansion, hierarchical morphology, and carbon confinement establishes an effective strategy for high-performance ASSLBs cathodes.