2016 Fiscal Year Annual Research Report
ＭＯＦを出発原料として用いたキャパシタ用多孔質電極の合成
| Project/Area Number |
16F16722
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| Research Institution | National Institute for Materials Science |
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Principal Investigator |
山内 悠輔 国立研究開発法人物質・材料研究機構, 国際ナノアーキテクトニクス研究拠点, MANA主任研究員 (10455272)
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| Co-Investigator(Kenkyū-buntansha) |
KANETI YUSUF VALENTINO 国立研究開発法人物質・材料研究機構, 国際ナノアーキテクトニクス研究拠点, 外国人特別研究員
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| Project Period (FY) |
2016-10-07 – 2019-03-31
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| Keywords | Metal-organic frameworks |
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| Outline of Annual Research Achievements |
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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| Current Status of Research Progress |
Current Status of Research Progress
1: Research has progressed more than it was originally planned.
Reason
We show generalized strategy for creating highly nanoporous MOx/C composites based on MOFs. This MOF-driven strategy can be expanded to other nanoporous monometallic and multi-metallic oxides with a multitude of potential applications. Our study is really going well.
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| Strategy for Future Research Activity |
We will focus on electrode fabrication and electrochemical measurements. A two-electrode cell assemblies will be used for the electrochemical tests. The working electrodes will be prepared by mixing the active material (MOx/C composite) (80 wt%) and poly(vinylidene fluoride) (20 wt %) dissolved in N-methylpyrrolidinone as a binder. The cyclic voltammograms and charge/discharge curves will be collected using an electrochemical workstation. Finally, DFT simulations (collaboration with SIMPAS) will be used to study the charge storage mechanism of the MOx/C composites.
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