Design of porous Co3O4 nanosheets via one-step synthesis as high-performance anode materials for lithium-ion batteries
The morphology of Co-based zeolitic imidazolate framework is affected by the molar ratio of
2-methylimidazole and Co 2+ used during the synthesis. In this study, we found that by
further controlling the molar ratio of 2-methylimidazole and Co 2+, 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 Co 3 O 4 nanosheets exhibited good …
2-methylimidazole and Co 2+ used during the synthesis. In this study, we found that by
further controlling the molar ratio of 2-methylimidazole and Co 2+, 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 Co 3 O 4 nanosheets exhibited good …
Abstract
The 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 Abstract
Porous Co3O4 nanosheets as high-performance anode materials were prepared from hexagonal Co(OH)2 nanosheets
Springer
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