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The development of sulfonated polyether ether ketone (sPEEK) and titanium silicon oxide (TiSiO4) composite membranes for DMFC applications |
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| Affiliation: | 1. College of Mechanical Engineering, Hunan Institute of Science and Technology, Yueyang, 414006, China;2. State Key Laboratory of Multiphase Flow in Power Engineering, Xi''an Jiaotong University, Xi''an 710049, China;3. Shenzhen Gas Corporation Ltd., Shenzhen 518040, China;1. Department of Mechanical Engineering, Faculty of Engineering, Chiang Mai University, Chiang Mai 50200, Thailand;2. Energy Harvesting and Storage Laboratory, Mechanical Engineering, Chiang Mai University, Chiang Mai 50200, Thailand;3. Department of Physics, Mepco Schlenk Engineering College, Sivakasi, Virudhunagar, Tamilnadu 626005, India;4. Key Laboratory of Low-grade Energy Utilization Technologies and System, MOE, Chongqing University, 400030, China;5. Department of Physics, Alagappa University, Karaikudi 630003, Tamilnadu, India;1. Conductivity and Electroactive Polymer Research Unit, The Petroleum and Petrochemical College, Chulalongkorn University, Bangkok 10330, Thailand;2. College of Industrial Technology, King Mongkut’s University of Technology North Bangkok, Bangkok 10800, Thailand;3. Department of Chemistry, Faculty of Science, King Mongkut’s University of Technology Thonburi, Bangkok 10140, Thailand |
| Abstract: | This work aims to develop composite membranes based sPEEK polymer matrix with TiSiO4 for direct methanol fuel cell (DMFC) applications. The sPEEK having 53% of degree of sulfonation (DS) was preferred to avoid dissolution and high-swelling problems of the polymer matrix at the operating conditions. The various content of TiSiO4, prepared by the calcination reaction of TiO2 and SiO2 nano-powders, was placed into the sPEEK matrix using the solution-casting method. The thermal and physicochemical properties of the composite membranes were characterized. AC impedance spectroscopy and methanol diffusivity measurements were conducted to determine the fuel cell characteristics of the membranes. The composite sPEEK membrane with 2.5 wt% TiSiO4 performed the highest single-cell DMFC test performance compared with sPEEK and Nafion? 117 membranes. It can be concluded that the composite sPEEK membranes with TiSiO4 can be promising and low-cost alternative membranes for DMFC applications. |
| Keywords: | Polyether ether ketone (PEEK) Titanium silicon oxide Composite membranes Direct methanol fuel cell (DMFC) |
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