Co decoration of molybdenum sulfide and carbon for improving lithium ion capacity of large monolayer MXene cathodes

•The hierarchical sandwich-like M-Ti3C2Tx@MoS2@C nanohybrids were synthesized by in-situ growth method.•The uniform vertical growth of MoS2 nanosheets ensured M-Ti3C2Tx-based electrodes a large specific area and high capacity.•The amorphous carbon layer stabilized the structure of the final nanohybrids during the cycle.•The sandwich-like M-Ti3C2Tx@MoS2@C nanohybrids delivered high reversible capacity and excellent cycling performance.