2019 Fiscal Year Annual Research Report
高度エネルギーデバイスに向けたメソ細孔有する層状ナノ物質の創製
| Project/Area Number |
18F18038
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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主任研究者 (10455272)
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| Co-Investigator(Kenkyū-buntansha) |
WANG JIE 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) |
2018-07-25 – 2020-03-31
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| Keywords | 多孔体 |
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| Outline of Annual Research Achievements |
In the last year of this JSPS, we focused on sandwich-structured ordered mesoporous polydopamine/MXene hybrids. Organic polymers have attracted significant interest as electrodes for energy storage devices because of their advantages, including molecular flexibility, cost-effectiveness, and environmentally friendly nature. Nevertheless, the real implementation of polymer-based electrodes is restricted by their poor stability, low capacity, and slow electron-transfer/ion diffusion kinetics. Herein, a sandwich-structured composite of ordered mesoporous polydopamine (OMPDA)/Ti3C2Tx was fabricated by in situ polymerization of dopamine on the surface of Ti3C2Tx via employing the PS-b-PEO block polymer as a soft template. The OMPDA layers with vertically oriented, accessible nanopores (around 20 nm) provided a continuous pore channel for ion diffusion, while the Ti3C2Tx layers guaranteed a fast electron-transfer path. As one of the potential applications, the OMPDA/Ti3C2Tx composite anode exhibited high reversible capacity, good rate performance, and excellent cyclability for lithium-ion batteries. The in situ transmission electron microscopy analysis revealed that the OMPDA in the composite only showed a small volume expansion and almost preserved the initial morphology during lithiation.
This finding will provide valuable knowledge to tackle the challenges of the restacking of 2D materials, help to identify the most promising architecture and further improve the electrochemical performance of 2D materials.
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| Research Progress Status |
令和元年度が最終年度であるため、記入しない。
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| Strategy for Future Research Activity |
令和元年度が最終年度であるため、記入しない。
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