コンパクトな容量式エネルギー貯蔵のためのグラフェン材料の液体介質密集統合
Xiaowei Yang1, Chi Cheng, Yufei Wang
1Department of Materials Engineering, Monash University, Clayton, VIC 3800, Australia.
Science (New York, N.Y.)
|August 3, 2013
まとめ
化学的に変換されたグラフェンは,高密度の電気化学エネルギー貯蔵のための密度の高い炭素電極を形成します. この単純な方法により,電気化学コンデンサの体積エネルギー密度が高くなります.
科学分野:
- 材料科学 材料科学とは
- 電気化学 電気化学について
- ナノテクノロジー ナノテクノロジー
背景:
- 高密度電気化学エネルギー貯蔵には,イオンにアクセシブルな表面積が大きく,イオン輸送抵抗性が低い多孔性炭素電極が必要です.
- 制御されたナノ構造と電解質の統合でそのような電極を製造することは,依然として重要な課題です.
研究 の 目的:
- 電気化学電容器のための高性能炭素電極を製造するための簡単な方法を開発する.
- 化学的に変換されたグラフェンのユニークな性質を,先進的なエネルギー貯蔵材料に活用する.
主な方法:
- 化学的に変換されたグラフェンの固有の微波2D構造と自己組み立てを活用します.
- 非揮発性液体電解液中の適応グラフェンゲルフィルムの毛細血管圧縮を使用しています.
- サブナノメートルスケールの統合グラフェン-電解質構造を形成する.
主要な成果:
- 高いイオンアクセシブル表面積と低いイオン輸送抵抗を持つ密集した多孔性炭素電極を成功裏に製造しました.
- グラフェンシートと電解質のサブナノメートルスケールの統合を達成し,連続的なイオン輸送ネットワークを作成しました.
- 電気化学コンデンサは,リットルあたり60ワット時に近づく体積エネルギー密度を示した.
結論:
- 化学的に変換されたグラフェンを用いた単純なソフトアプローチにより,高度な炭素電極の容易な製造が可能になります.
- 開発された方法は,高密度のエネルギー貯蔵のための電極製造における課題を克服します.
- 結果的に得られる材料は,次世代の電気化学コンデンサータにとって有望なことを示しています.
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