LAUSR

AbstractThe morphology of Co-based zeolitic imidazolate framework is affected by the molar ratio of 2-methylimidazole and Co2+ used during the synthesis. In this study, we found that by further controlling the molar ratio of 2-methylimidazole and Co2+, hexagonal Co(OH)2 nanosheets can by formed. By calcination of such Co(OH)2 nanosheets, the original two-dimensional morphology was maintained and hierarchical pores were formed with 2-methylimidazole as the porogen. Such porous Co3O4 nanosheets exhibited good electrochemical performance and delivered a high specific capacity of 850 mAh g−1 at current density of 300 mA g−1 after 100 cycles when used as anode of lithium-ion batteries. Graphical AbstractPorous Co3O4 nanosheets as high-performance anode materials were prepared from hexagonal Co(OH)2 nanosheets