| 학회 |
한국공업화학회 |
| 학술대회 |
2020년 가을 (10/28 ~ 10/30, 광주 김대중컨벤션센터(Kimdaejung Convention Center)) |
| 권호 |
24권 1호 |
| 발표분야 |
포스터-전기화학 |
| 제목 |
Importance of ionomer binder in catalyst ink slurry for high performance of polymer electrolyte membrane fuel cell |
| 초록 |
It is well known that the interaction between solvents, ionomer binders and catalyst nanoparticles in catalyst ink plays an important role in the performance of PEMFCs as it determines the final micro-morphology of the catalyst layer. In this paper, 3M725 perfluorinated sulfonic-acid (PFSA) ionomer binders have been investigated which has higher polymeric main-chain mobility, increase solubility, shorter side-chains and lower equivalent weight than the conventional Nafion 1100 series of ionomer. These binders with high dispersibility exhibits more developed and connected secondary pore catalyst layer structures and fewer clustered agglomerates; thus, it shows higher performance in a single cell, particularly under low relative humidity conditions. These insights help to elucidate the reason for the difference in performance by different ionomers and provide the foundation for improving the fuel cell performance of Nafion-type ionomers. |
| 저자 |
김옥희1, 안치영2, 조용훈3
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| 소속 |
1해군사관학교, 2Center for Nanoparticle Research, 3Institute for Basic Science (IBS) |
| 키워드 |
Catalyst Ink Dispersion; 19F Nuclear Magnetic Resonance; Fuel Cell; Hydrogen; Ionomer Binder; Membrane-Electrode Assembly; Molecular Chain Mobility; Nafion; Perfluorinated Sulfonic Acid
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| E-Mail |
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