| 학회 |
한국공업화학회 |
| 학술대회 |
2017년 가을 (11/08 ~ 11/10, 부산 벡스코(BEXCO)) |
| 권호 |
21권 2호 |
| 발표분야 |
에너지저장변환_포스터 |
| 제목 |
Tuning the Ionomer Distribution in the Catalyst Layer with a Dipropylene Glycol/Water Based Ionomer Dispersion for a High Performance Polymer Electrolyte Membrane Fuel Cell |
| 초록 |
With the demands for better performance of polymer electrolyte membrane fuel cells (PEMFCs), studies on controlling the distribution of ionomers have recently gained interest. Here, we present a tunable ionomer distribution in the catalyst layer (CL) with dipropylene glycol (DPG) and water mixtures as an ionomer dispersion medium. Dynamic light scattering and molecular dynamics simulation demonstrate that, by increasing the DPG content in the dispersion, the size of the ionomer aggregates in the dispersion is exponentially reduced due to the higher affinity of DPG for Nafion ionomers. The ionomer distribution of the resulting CLs dictates the dimensional feature of the ionomer dispersion. At an intermediate DPG content, an optimal ionomer distribution is obtained in terms of power performance as a result of balanced proton and mass transports. |
| 저자 |
두기수, 육성민, 최선규, 이동현, 이동욱, 김현규, 김희탁
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| 소속 |
한국과학기술원 |
| 키워드 |
Ionomer distribution; catalyst layer; ionomer dispersion solvent; Nafion ionomer; polymer electrolyte membrane fuel cell
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| E-Mail |
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