Facile synthesis of porous peanut-like ZnCo2O4 decorated with rGO/CNTs toward high-performance lithium ion batteries

In this work, we develop an effective strategy to synthesize porous peanut-like ZnCo 2 O 4 (ZCO) decorated with graphene/Carbon nanotubes (CNTs) as an effective anode material for long cycling life lithium storage via a facile solvothermal process and rapid cold-quenching method. SEM and TEM characterizations show that graphene and CNTs serving as the elastic support and superior conductive network wrap the porous peanut-like ZCO, which can enhance electrochemical performance. The as-prepared ZnCo 2 O 4 /reduce graphene oxide/carbon nanotubes (ZCO/rGO/CNTs) delivers an initial discharge capacity of 1214.1 mAh g −1 at a current density of 500 mA g −1 and exhibits a high discharge capacity (1026.6 mAh g −1 after 200 cycles) when evaluated as anode materials of LIBs. More interestingly, the reversible capacity of the ZCO/rGO/CNTs even retains 728.6 mAh g −1 after 300 cycles even at a high current density of 1000 mA g −1 . The good cycling capability, high rate performance and reliable electrode adaptability suggest that the ZCO/rGO/CNTs will be an attractive material for lithium ion batteries.