ハイパワーナトリウム貯蔵のための2D導電性金属有機フレームワークにおけるヘクサアミノベンゼンの安定化
Jihye Park, Minah Lee, Dawei Feng
1Berzelii Centre EXSELENT on Porous Materials, Department of Materials and Environmental Chemistry , Stockholm University , Stockholm SE-106 91 , Sweden.
Journal of the American Chemical Society
|July 26, 2018
まとめ
新しいコバルト基の金属有機フレーム (MOF) は,充電電池の伝導性と安定性を向上させます. この材料は3電子リドックス反応を可能にし,高電力ナトリウムイオン貯蔵アプリケーションに希望を示しています.
科学分野:
- 材料科学
- 電気化学
- ナノテクノロジー
背景:
- レドックス活性有機材料は充電電池には有望ですが,伝導性と安定性が悪いです.
- 高電子伝導性の安定した電極材料の開発は,先進的なエネルギー貯蔵に不可欠です.
研究 の 目的:
- コバルトベースの2D導電性金属有機フレームワーク (MOF) の報告,Co-HAB.
- ナトリウムイオン貯蔵のための高性能電極材料としての可能性を調査する.
主な方法:
- ヘクサアミノベンゼン (HAB) とCo (II) を用いたコバルトベースの2D導電性金属有機フレームワーク (MOF) の合成.
- 酸化還元作用,伝導性,速度能力を評価するための電気化学的特性.
- 材料の性質を合成で調整する
主要な成果:
- 合成されたCo-HABで1.57 S cm−1の総電気伝導性を達成した.
- このリンク器では初めて,HAB毎の可逆3電子還酸化反応が実証された.
- 7分で214 mAh g−1と,高質量負荷で2.6 mAh cm−2の面積容量を示した.
結論:
- Co-HABは特殊な安定性とエネルギー貯蔵のためのアクセス可能なアクティブサイトを示しています.
- この材料は,高性能のナトリウムイオン電池のための有望な新型電極です.
- 合成チューナビリティは,伝導性と性能の最適化を可能にします.
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