COFの調整:ポリピロールによる層間編みによる非導電性2D層のCOFを導電性準3D構造に変換する
Chitvan Jain, Rinku Kushwaha, Deepak Rase
1Central NMR Facility and Physical/Materials Chemistry Division, CSIR-National Chemical Laboratory, Dr Homi Bhabha Road, Pune 411008, India.
Journal of the American Chemical Society
|December 29, 2023
まとめ
研究者らは,2D COF 層をポリピロール (Ppy) とクロスリンクすることで,3D 協和有機フレームワーク (COF) を作成した. これは電子伝導性を大幅に高め スーパーコンデンサーの性能を向上させました
科学分野:
- 材料科学
- 電気化学
- ナノテクノロジー
背景:
- 結合有機フレームワーク (COF) は,高度なアプリケーションの電子伝導性と構造的整合性を改善する必要があります.
- エネルギー貯蔵装置には 頑丈で伝導性のある材料の開発が不可欠です
研究 の 目的:
- 2D COFの電子伝導性と構造的頑丈性を高める.
- 超大容量器の適用のための共振的にクロスリンクされたCOFの可能性を調査する.
主な方法:
- 2D COFとポリピロール (Ppy) 鎖を共結合して,準3D COFを形成する.
- SAEDパターン,電子伝導度測定,およびEPRスペクトロスコーピーを用いた特徴付け.
- 開発された3D COFを使用したスーパーコンデンサの製造と試験.
主要な成果:
- 準3D COFは,明確に定義された結晶構造と著しく改善された電子伝導性 (10−9から10−2 S m−1) を示した.
- 電子帯構造の分析により,フェルミレベルに近い値帯の最大値と状態の密度が明らかになった.
- 3D COF (COF20-Ppy) で作られたスーパーコンデンサは,377.6 mF cm−2の高い面積容量を示した.
結論:
- ポリピロールとの共性クロスリンクは,2DのCOFを効率的に高度にオーダーされた導電性3D材料に変換します.
- ポリピロールは"結合ブリッジ"として作用し,帯域の隙間を小さくし,充電輸送の強化のためのポラロンを提供します.
- このアプローチは,次世代のCOFベースのエネルギー貯蔵装置を開発するための有望な戦略です.
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