A Flexible Metal-Organic Framework with High Density of Sulfonic Acid Sites for Proton Conduction

Published

November 10, 2017

Author(s)

Fan Yang, Gang Xu, Yibo Dou, Bin Wang, Heng Zhang, Hui Wu, Wei Zhou, Jian-Rong Li, Banglin Chen

Abstract

The design of stable electrolyte materials of high proton conductivity for fuel cell is still a great challenge to date. Herein we report a chemically stable and structurally flexible MOF, BUT-8(Cr)_a, with high-density of -SO₃H sites on its pore surfaces for the proton conduction. The flexible nature together with its high density of -SO₃H sites has enabled BUT-8(Cr)_a to self-adapt its framework under different humid environments to ensure smooth proton conduction pathways mediated by the water molecules, BUT-8(Cr)_a thus has not only the highest proton conductivity of 1.27 x 10^-1S cm^u-1 at 100% RH and 80 °C among the MOF materials but also maintains the moderately high proton conductivity at wide ranges of relative humidity (RH) and temperature.

Citation

Nature Energy

Volume

2

Pub Type

Journals

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Keywords

Metal-Organic Framework, Proton Conductivition

Citation

Yang, F. , Xu, G. , Dou, Y. , Wang, B. , Zhang, H. , Wu, H. , Zhou, W. , Li, J. and Chen, B. (2017), A Flexible Metal-Organic Framework with High Density of Sulfonic Acid Sites for Proton Conduction, Nature Energy, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=923789 (Accessed October 12, 2025)