| 학회 |
한국공업화학회 |
| 학술대회 |
2018년 가을 (10/31 ~ 11/02, 제주국제컨벤션센터(ICC JEJU)) |
| 권호 |
22권 2호 |
| 발표분야 |
전기화학_포스터 |
| 제목 |
Reinterpretation of ionomer binder: Effects of ionomer characteristics on performance of polymer electrolyte fuel cell |
| 초록 |
Interaction between the ionomer binder and catalyst nanoparticles in catalyst ink is well known to play an important role in the performance of proton exchange membrane fuel cells (PEMFCs) because it determines the final micro-morphology of the catalyst layer. Herein we investigated the 3M series of perfluorinated sulfonic acid (PFSA) ionomer binders, which have higher polymeric main-chain mobilities, increased solubilities, shorter side-chains, and lower equivalent weights than the Nafion 1100 series of ionomers. The 3M binder 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 conditions of low relative humidity. These insights help us 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, 오승현2, 안치영3, 김성준2, 김종관2, 김정석4, 양승란4, 최미화4, 조용훈2, 성영은3
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| 소속 |
1해군사관학교, 2강원대, 3서울대, 4한국전력 |
| 키워드 |
Catalyst Ink Dispersion; 19F NMR; Fuel Cell; Ionomer Binder; Membrane-Electrode Assembly (MEA); Molecular Chain Mobility; Perfluorinated Sulfonic Acid (PFSA)
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| E-Mail |
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