In Situ-Doped Superacid in the Covalent Triazine Framework Membrane for Anhydrous Proton Conduction in a Wide Temperature Range from Subzero to Elevated Temperature
Source abstract
Abstract
Synthesis of solid-state proton-conducting membranes with low activation energy and high proton conductivity under anhydrous conditions is a great challenge. Here, we show a simple and convenient way to prepare covalent triazine framework membranes (CTF-Mx) with acid in situ doping for anhydrous proton conduction in a wide temperature range from subzero to elevated temperature (160 °C). The low proton dissociation energy and continuous hydrogen bond network in CTF-Mx make the membrane achieve high proton conductivity from 1.21×10-3 S cm-1 (−40 °C) to 2.08×10-2 S cm-1 (160 °C) under anhydrous conditions. Molecular dynamics and proton relaxation time analyses reveal proton hopping at low activation energies with greatly enhanced mobility in the CTF membranes.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Covalent Organic Framework Applications · Fuel Cells and Related Materials · Metal-Organic Frameworks: Synthesis and Applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
State Key Laboratory of Luminescence and Applications, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, P. R. China
University of Chinese Academy of Sciences, Beijing 100049, P. R. China
School of Chemical Engineering and Technology, Shaanxi Key Laboratory of Energy Chemical Process Intensification, Xi’an Jiaotong University, Xi’an 710049, China
Funding
Xi?an Jiaotong University · Ministry of Education of the People's Republic of China · Department of Science and Technology of Jilin Province · National Natural Science Foundation of China · Shaanxi Provincial Science and Technology Department · Shaanxi Province
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