| 研究実績の概要 |
MOF-derived materials have rarely been investigated as anode materials for sodium-ion batteries. In the first year, we report the fabrication of Ni, N co-doped Co/Co3O4/carbon hybrid using bimetallic Ni-Co-ZIF as templates. The synthesized Ni, N co-doped Co/Co3O4/carbon hybrid are highly microporous, giving rise to a high specific surface area of 552 m2/g. When employed as anode for sodium-ion batteries, the Ni, N co-doped Co/Co3O4/C hybrid exhibited both good rate performance, showing a high specific capacity of 218 mAh g－1 at a high current density of 500 mA g－1 as well as good cycling stability, as a high charge capacity of 187.9 mAh g－1 can be retained after 100 cycles at a 500 mA g－1 with a high capacity retention of 87.5%.
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