| 학회 |
한국공업화학회 |
| 학술대회 |
2019년 봄 (05/01 ~ 05/03, 부산 벡스코(BEXCO)) |
| 권호 |
23권 1호 |
| 발표분야 |
에너지저장·변환_포스터 |
| 제목 |
Polybenzimidazole/Nafion hybrid membrane with improved chemical stability for vanadium redox flow battery application |
| 초록 |
In order to increase the chemical stability of polybenzimidazole (PBI) membrane against the highly oxidizing environment of vanadium redox flow battery (VRFB), PBI/Nafion hybrid membrane was developed by spray coating Nafion ionomer on a single surface of the PBI membrane. The acid-base interaction between the sulfonic acid of the Nafion and the benzimidazole of the PBI created a stable interfacial adhesion between the Nafion layer and the PBI layer. The Nafion layer protected the PBI from chemical degradation under accelerated oxidizing condition of 1 M VO2+/5 M H2SO4, and the hybrid membrane was subsequently examined for spectroscopic analysis. In the VRFB single cell performance test, the cell with the hybrid membrane showed better energy efficiency than the Nafion cell with 92.66% at 40 mA cm-2 and 78.1% at 100 mA cm-2 with no delamination observed between the Nafion layer and the PBI layer after the test was completed. |
| 저자 |
안수민1, 정환엽2, 김태호2, 홍영택2
|
| 소속 |
1서울대, 2한국화학(연) |
| 키워드 |
VRFB; PBI; hybrid membrane
|
| E-Mail |
|
