Статья

Achieving High Intrinsic Proton Conductivity via Functionalization of MOF-808 by Ionic Liquid

Junchao JiaSchool of Materials Science and Engineering, Institute of Functional Porous Materials, Zhejiang Sci-Tech University, Hangzhou 310018, P. R. ChinaXiaomin LiSchool of Materials Science and Engineering, Institute of Functional Porous Materials, Zhejiang Sci-Tech University, Hangzhou 310018, P. R. ChinaHuan WuSchool of Materials Science and Engineering, Institute of Functional Porous Materials, Zhejiang Sci-Tech University, Hangzhou 310018, P. R. ChinaQing HuangCollege of Materials Science and Engineering, Nanjing Forestry University, Nanjing 210037, P. R. ChinaJunkuo GaoSchool of Materials Science and Engineering, Institute of Functional Porous Materials, Zhejiang Sci-Tech University, Hangzhou 310018, P. R. China

2023en

ABI

Аннотация

Achieving high intrinsic proton conductivity is essential for the development of stable proton conductors in proton exchange membrane fuel cells. Herein, an ionic liquid (IL) with a hydrosulfate anion, an imidazole ring, and a sulfonate group beneficial to proton transfer was used to functionalize a metal–organic framework (MOF-808) by replacing the formates coordinated with Zr. The obtained MOF-808-IL exhibits high intrinsic proton conductivity of 1.28 × 10–1 S cm–1 at 60 °C and 100% relative humidity (RH), which exceeds those of most of the MOF-based proton conductors. Moreover, the proton transfer mechanism has been elucidated by the combination of the crystal structure and variable temperature Fourier transform infrared spectra. This study provides a strategy for achieving ultrahigh proton conductivity and a model for analyzing the proton conducting mechanism.

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Идентификаторы

DOI: 10.1021/acssuschemeng.3c04465

Цитирования и источники

Цитирований: 2Использованных источников: 0

Показатели — AkademScholar