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Strategically Hierarchical Improvement of Superprotonic Conductivity in Stable Metal-Organic Framework System

Abstract

Seeking the proton-exchange membranes (PEMs) with high proton conductivity and long-term durability is highly important to the development of fuel cells. Herein, an efficient and feasible strategy that features different proton sources and hopping sites modifications on stable UiO-66-NH2 framework for hierarchically improving proton conductivity is demonstrated. As a result, IM-UiO-66-AS shows the highest superprotonic conductivity of 1.54 × 10-1 S cm-1 (80 °C, 98% RH) and outstanding long-term durability of at least 100 h, which have surpassed all the reported proton-conducting MOFs materials without guest loading. Furthermore, the manufactured membrane still can maintain high proton conductivity with 1.19 × 10-2 S cm-1 associated with continuous work of at least 40 h under the same conditions, suggesting the great potential for further device application.

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Publication details

The article was received on 18 Sep 2019, accepted on 10 Oct 2019 and first published on 10 Oct 2019


Article type: Paper
DOI: 10.1039/C9TA10286H
J. Mater. Chem. A, 2019, Accepted Manuscript

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    Strategically Hierarchical Improvement of Superprotonic Conductivity in Stable Metal-Organic Framework System

    Y. Lan, X. Li, J. Liu, C. Zhao, J. Zhou, L. Zhao and S. Li, J. Mater. Chem. A, 2019, Accepted Manuscript , DOI: 10.1039/C9TA10286H

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