A highly proton conductive membrane based on hydrolyzed NbCl5 and phytic acid |
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| Affiliation: | 1. Leibniz Institut für Polymerforschung Dresden, Germany;2. Institut für Werkstoffwissenschaft, Technische Universität Dresden, Germany;1. Department of Advanced Fibro-science, Kyoto Institute of Technology, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan;2. Processing Technology Department, Osaka Municipal Technical Research Institute, 1-6-50, Morinomiya, Joto-ku, Osaka 536-8553, Japan;3. Center for Fiber and Textile Science, Kyoto Institute of Technology, Sakyoku, Kyoto 606-8585, Japan;4. Kaneka US Material Research Center, Kaneka Americas Holding, Inc., 800 Raymond Stotzer Pkwy, College Station, TX 77843, USA;1. College of Material Science and Engineering, Zhengzhou University, Zhengzhou, Henan 450001, People''s Republic of China;2. CAS Key Laboratory of Soft Matter Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, People''s Republic of China;3. Dan F Smith Department of Chemical Engineering, Lamar University, Beaumont, TX 77710, USA;4. Integrated Composites Laboratory (ICL), Chemical and Biomolecular Engineering Department, University of Tennessee, Knoxville, TN 37996, USA;1. National Synchrotron Radiation Lab, CAS Key Laboratory of Soft Matter Chemistry, University of Science and Technology of China, Hefei, China;2. MOE Key Laboratory of Space Applied Physics and Chemistry, Shaanxi Key Laboratory of Macromolecular Science and Technology, School of Science, Northwestern Polytechnical University, Xi''an, 710072, China |
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| Abstract: | It is vital to choose economical and environmentally friendly proton conductive materials to improve the performance of proton exchange membranes, which occupies a unique position in proton exchange membrane fuel cells. This paper reports a new proton conductive nanocomposite, that was named NbO2(OH)-PA prepared from phytic acid (PA) and NbCl5. NbO2(OH)-PA showed an excellent proton conductivity of 135 mS cm?1 at 85 °C and 97% relative humidity. In addition, NbO2(OH)-PA was combined with sulfonated poly (ether ketone) (SPEEK) in different proportions to form proton conductive membranes, that are labeled SPEEK-x NbO2(OH)-PA. SPEEK-0.9% NbO2(OH)-PA exhibited the best proton conductivity of 0.17 S cm?1 at 80 °C in water. This work may provide new ideas for improving proton conductivity of membranes through simple methods. |
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| Keywords: | Sol-gel method Phytic acid Proton conductive membrane |
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