2019年8月
Superionic Conduction over a Wide Temperature Range in a Metal-Organic Framework Impregnated with Ionic Liquids
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
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- 巻
- 58
- 号
- 32
- 開始ページ
- 10909
- 終了ページ
- 10913
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1002/anie.201903980
- 出版者・発行元
- WILEY-V C H VERLAG GMBH
Most molecules in confined spaces show markedly different behaviors from those in the bulk. Large pores are composed of two regions: an interface region in which liquids interact with the pore surface, and a core region in which liquids behave as bulk. The realization of a highly mobile ionic liquid (IL) in a mesoporous metal-organic framework (MOF) is now reported. The hybrid shows a high room-temperature conductivity (4.4x10(-3) S cm(-1)) and low activation energy (0.20 eV); both not only are among the best values reported for IL-incorporated MOFs but also are classified as a superionic conductor. The conductivity reaches over 10(-2) S cm(-1) above 343 K and follows the Vogel-Fulcher-Tammann equation up to ca. 400 K. In particular, the hybrid is advantageous at low temperatures (<263 K), where the ionic conduction is superior to that of bulk IL, making it useful as solid-state electrolytes for electrochemical devices operating over a wide temperature range.
- リンク情報
- ID情報
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- DOI : 10.1002/anie.201903980
- ISSN : 1433-7851
- eISSN : 1521-3773
- PubMed ID : 31140203
- Web of Science ID : WOS:000473709500001