@article{0ff708aaa2e94dffa3579bc87346bd04,
title = "Proton-Conductive Cerium-Based Metal-Organic Frameworks",
abstract = "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. ",
author = "Ho, {Wei Huan} and Li, {Shih Cheng} and Wang, {Yi Ching} and Chang, {Tzu En} and Chiang, {Yi Ting} and Li, {Yi Pei} and Kung, {Chung Wei}",
note = "Funding Information: This project was sponsored by the Ministry of Science and Technology (MOST) of Taiwan under project 110-2221-E-006-017-MY3 and the Young Scholar Fellowship Einstein Program (110-2636-E-002-014). The authors thank the support from the Yushan Young Scholar Program of the Ministry of Education (MOE), Taiwan. This work was also supported in part by the Higher Education Sprout Project, MOE, Taiwan to the Headquarters of University Advancement at the National Cheng Kung University (NCKU). The authors are grateful to the National Center for High-performance Computing and the Computer and Information Networking Center at NTU for support of computing facilities. The authors thank Prof. Hong-Ping Lin of NCKU for TGA experiments and also Kun-Hsu Lee at the Instrument Center of NCKU for XRD measurements. Publisher Copyright: {\textcopyright} 2021 American Chemical Society.",
year = "2021",
month = nov,
day = "24",
doi = "10.1021/acsami.1c17396",
language = "English",
volume = "13",
pages = "55358--55366",
journal = "ACS applied materials & interfaces",
issn = "1944-8244",
publisher = "American Chemical Society",
number = "46",
}