Improved performance and durability of sulfonated polyether ether ketone/cerium phosphate composite membrane for proton exchange membrane fuel cells
| Autor: | H. Mehmet Tasdemir, Alpay Sahin, İrfan Ar |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Materials science
Ion exchange Scanning electron microscope General Chemical Engineering General Engineering General Physics and Astronomy Proton exchange membrane fuel cell 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Electrochemistry 01 natural sciences 0104 chemical sciences Dielectric spectroscopy Polyether ether ketone chemistry.chemical_compound Membrane chemistry Chemical engineering General Materials Science Fourier transform infrared spectroscopy 0210 nano-technology |
| Popis: | In this study, a new cerium phosphate (CePO4)-doped sulfonated polyether ether ketone (SPEEK) composite membranes were synthesized by using solution casting method with different CePO4 loading. Their performance and durability were investigated for proton exchange membranes fuel cells. Different techniques, namely Fourier transform infrared spectroscopy (FT-IR), X-ray powder diffraction (XRD), scanning electron microscopy (SEM), dynamic mechanical tests (DMA), and electrochemical impedance spectroscopy (EIS) analyses were used to characterize the synthesized membranes. Water uptake (WU) and swelling properties as well as ion exchange capacities (IEC) of synthesized membranes were also determined. Fuel cell performance, durability, and Fenton tests for oxidative stability of the synthesized membranes were also investigated. Experimental results showed that addition of CePO4 up to 10% by weight improved the membrane properties. 10 wt% CePO4-doped membrane possessed a good proton conductivity of 0.242 S/cm at 80 degrees C. Current and power densities of this membrane were obtained as 790 mA/cm(2) and 474 mW/cm(2), respectively, at 0.6 V cell potential and 80 degrees C fuel cell temperature. OCV decrement value of this membrane was 5.93%. When the performance and durability properties of 10% CePO4-doped membrane is compared to commercial Nafion membrane, it could be a good alternative for proton exchange membrane fuel cells. |
| Databáze: | OpenAIRE |
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