| 학회 |
한국고분자학회 |
| 학술대회 |
2021년 가을 (10/20 ~ 10/22, 경주컨벤션센터) |
| 권호 |
46권 2호 |
| 발표분야 |
Virtual Lightning Session |
| 제목 |
Development of Proton Exchange Membrane Based on Trifluoromethanesulfonylimide-grafted Polybenzimidazole |
| 초록 |
Trifluoromethanesulfonylimide-grafted polybenzimidazole (PBI-TFSI) was synthesized for proton exchange membrane (PEM) applications. Its proton conductivity was a) less dependent on humidity and b) higher than that of conventional fluorine-based PEM (Nafion) and propanesulfonicacid-grafted PBI (PBI-PS) at a relative humidity of 40%. The chemical structure of PBI-TFSI was investigated using 1H and 19F nuclear magnetic resonance and Fourier transform infrared spectroscopy. The membranes yielded good transparency, flexibility, and thermal stability up to 350 °C. Membranes with different side-chain grafting ratios were prepared, and the water uptake and hydration number of the PBI-TFSI membranes were lower than those of the PBI-PS membranes most likely because of the hydrophobicity of the side chain. The higher proton concentration provided by TFSI with stronger acidity than PS might be the reason for the higher proton conductivities of PBI-TFSI. |
| 저자 |
Hiroto Miura, Yuki Motoishi, Naoki Tanaka, Tsuyohiko Fujigaya
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| 소속 |
Kyushu Univ. |
| 키워드 |
- |
| E-Mail |
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