https://scholars.lib.ntu.edu.tw/handle/123456789/598290
標題: | Proton-Conductive Cerium-Based Metal-Organic Frameworks | 作者: | Ho W.H Li S.-C Wang Y.-C Chang T.-E Chiang Y.-T Li Y.-P Kung C.-W. YI-PEI LI |
關鍵字: | bimetallic MOF;cerium-based MOF;fuel cell;mix-metal node;proton conduction;zirconium-based MOF;Cerium;Density functional theory;Fuel cells;Organometallics;Zirconium;Bimetallic metal-organic framework;Bimetallics;Cerium-based metal-organic framework;Metalorganic frameworks (MOFs);Mix-metal node;Proton conducting;Proton conduction;Zirconium-based metal-organic framework;Activation energy | 公開日期: | 2021 | 卷: | 13 | 期: | 46 | 起(迄)頁: | 55358-55366 | 來源出版物: | ACS Applied Materials and Interfaces | 摘要: | In this study, proton-conducting behaviors of a cerium-based metal-organic framework (MOF), Ce-MOF-808, its zirconium-based isostructural MOF, and bimetallic MOFs with various Zr-to-Ce ratios are investigated. The significantly increased proton conductivity (σ) and decreased activation energy (Ea) are obtained by substituting Zr with Ce in the nodes of MOF-808. Ce-MOF-808 achieves a σ of 4.4 × 10-3 S/cm at 25 °C under 99% relative humidity and an Ea of 0.14 eV; this value is among the lowest-reported Ea of proton-conductive MOFs. Density functional theory calculations are utilized to probe the proton affinities of these MOFs. As the first study reporting the proton conduction in cerium-based MOFs, the finding here suggests that cerium-based MOFs should be a better platform for the design of proton conductors compared to the commonly reported zirconium-based MOFs in future studies on energy-related applications. ? 2021 American Chemical Society. |
URI: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-85119438198&doi=10.1021%2facsami.1c17396&partnerID=40&md5=28b7f0586bc0716f196bee249c138bd6 https://scholars.lib.ntu.edu.tw/handle/123456789/598290 |
ISSN: | 19448244 | DOI: | 10.1021/acsami.1c17396 |
顯示於: | 化學工程學系 |
在 IR 系統中的文件,除了特別指名其著作權條款之外,均受到著作權保護,並且保留所有的權利。