2020 Fiscal Year Research-status Report
カーバイド前駆体を用いた低温ナノポーラスグラフェン合成法の開発
| Project/Area Number |
19K15389
|
|---|
| Research Institution | Tohoku University |
|---|
Principal Investigator |
韓 久慧 東北大学, 学際科学フロンティア研究所, 助教 (40823092)
|
|---|
| Project Period (FY) |
2019-04-01 – 2023-03-31
|
| Keywords | Porous carbon / Sodium ion battery / Composite |
|---|
| Outline of Annual Research Achievements |
Our carbide-mediated synthetic approach has enabled the development of 3D nanoporous graphene/carbon materials with tuneable microstructures and surface chemistry. We explored the application of 3D nanoporous amorphous carbon for sodium-ion batteries. Based on its versatilely designable atomic structures and chemical features, we investigated the effect of both local atomic order and chemical doping on the sodium ion storage mechanisms in amorphous carbon. The results not only clarify the long-disputed interpretations of the structure-capacity-potential correlation but also provide new insights into the intrinsic role of chemical dopants in carbon structures for sodium-ion storage. In addition, we also developed the nanoporous graphene/amorphous carbon composite materials.
|
| Current Status of Research Progress |
Current Status of Research Progress
2: Research has progressed on the whole more than it was originally planned.
Reason
By our carbide-mediation technique, we succeeded in fabricating two materials, 3D nanoporous graphene and 3D nanoporous amorphous carbon, and realized the precise control of their microstructures and feature sizes. We then moved forward to explore the functional applications of these new materials. In this fiscal year, we focused on sodium-ion batteries. We not only demonstrated the promise of nanoporous amorphous carbon for sodium-ion battery anodes but also used it as a model system for fundamental studies.
|
| Strategy for Future Research Activity |
We will explore other applications of our new materials, such as electrocatalytic water splitting and electrochemical supercapacitors.
|
