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  • 05월 20일 18시 이후 : 초록수정 불가능, 일정확인 및 검색만 가능

제125회 대한화학회 학술발표회 및 총회 Extended ion conducting site of composite membrane via incorporating functionalized TiO2 for anion exchange membrane fuel cell

2020년 5월 20일 15시 27분 20초
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Environmental Energy
저자 및
Dong Jin Yoo
Life Science, Jeonbuk National University, Korea
In this study, we prepared quaternized poly(arylene ether ketone) (QN-PAEK)/TiO2-PTMA composite membrane containing functionalized TiO2, and investigated the physical properties, electrochemical performance, and chemical stability of AEM according to the TiO2-PTMA content (1, 3, 5, 7, and 9 wt%) for AEMFC application in details. At first, PAEK random copolymer were successfully synthesized with fluorenylidene, ketone, and perfluorinated units for AEM with superb ion conductivity and alkaline stability. The random copolymer were chloromethylated and quaternized selectively and intensively at specific positions, and chemical structure of synthesized PAEK, chloromethylated PAEK (CM-PAEK) were confirmed by 1H-NMR. The composite membranes based on PAEK with TiO2-PTMA were prepared by solution casting method according to TiO2-PTMA content. The composite membranes demonstrated thermal and dimensional stabilities, and showed increased hydroxide conductivity than the pristine membrane due to hydrophilicity of inorganic nanofillers and quaternary ammonium group of TiO2-PTMA. Consequently, the QN-PAEK/TiO2-PTMA composite membranes showed excellent electrochemical properties and alkaline stabilities, which proved to be very useful as an AEM for AFC.