高性能オスモティックエネルギー変換のための超薄およびイオン選択型ジャヌス膜

Zhen Zhang^1,2, Xin Sui³, Pei Li³

¹Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Green Printing, Institute of Chemistry, Chinese Academy of Sciences , Beijing 100190, PR China.

Journal of the American Chemical Society

|June 13, 2017

まとめ

研究者達は効率的なオスモティックエネルギー変換のために超薄のジャヌス膜を開発しましたこれらの膜は高電力密度で現在のブルーエネルギー技術の限界を克服します

科学分野:

材料科学
エネルギー収集
ナノテクノロジー

背景:

"青い"エネルギーの一種であるオスモティックエネルギーは,世界のエネルギー需要と汚染に対する持続可能な解決策を提示しています.
ナノ流体チャネルはエネルギー捕獲のための新しい輸送特性を提供しますが,膜抵抗とイオン選択性は重要な課題です.
より薄く,低抵抗で,高度にイオン選択性のある膜の開発は,オスモティックエネルギーアプリケーションの進歩に不可欠です.

研究の目的:

先進的なジャヌス膜を設計しオスモティックエネルギー変換を強化する
膜ベースのエネルギーシステムの高抵抗と低離子選択性の限界を克服する.
エネルギー集中のための高性能ナノチャネル膜の設計の指針を確立する.

主な方法:

ブロックコポリマー相分離を用いた超薄ジャヌス膜の製造.
海水と川水の混合物を用いてオスモティックエネルギー変換の実験.
膜の厚さとチャネル構造がイオン輸送に与える影響を明らかにするための連続体シミュレーション.

主要な成果:

海水と川水を混ぜて約2.04W/m2の電力密度を達成した.
膜の厚さとチャネル構造がイオン輸送とデバイスの性能に大きく影響することを実証した.
イオン選択的なジャヌス膜を成功裏に設計し,性能を向上させた.

結論:

超薄なジャヌス膜は高性能のオスモティックエネルギー変換に有効です.
膜構造とイオン輸送の相互作用を理解することはエネルギー収集の最適化に不可欠です
この研究は,効率的なブルーエネルギー技術のための次世代の膜の設計のための枠組みを提供します.

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