Journal
JOURNAL OF MATERIALS CHEMISTRY A
Volume 7, Issue 43, Pages 25165-25171Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c9ta10286h
Keywords
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Funding
- NSFC [21622104, 21701085, 21871141, 21871142, 21901122]
- NSF of Jiangsu Province of China [BK20171032]
- Natural Science Research of Jiangsu Higher Education Institutions of China [17KJB150025, 19KJB150011]
- China Postdoctoral Science Foundation [2018M630572, 2019M651873]
- Priority Academic Program Development of Jiangsu Higher Education Institutions
- Foundation of Jiangsu Collaborative Innovation Center of Biomedical Functional Materials
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Identification of proton-exchange membranes (PEMs) with high proton conductivity and long-term durability is highly important for the development of fuel cells. Herein, an efficient and feasible strategy that features different proton sources and hopping site modifications on the stable UiO-66-NH2 framework for hierarchically improving the proton conductivity is demonstrated. As a result, IM-UiO-66-AS showed the highest superprotonic conductivity of 1.54 x 10(-1) S cm(-1) (80 degrees C, 98% RH) and outstanding long-term durability of at least 100 h, which surpass those of all the reported proton-conducting MOF materials without guest loading. Furthermore, the manufactured membrane could maintain a high proton conductivity of 1.19 x 10(-2) S cm(-1) even with continuous work for at least 40 h under the same conditions, suggesting its great potential for further application in devices.
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