| 학회 |
한국화학공학회 |
| 학술대회 |
2019년 가을 (10/23 ~ 10/25, 대전컨벤션센터) |
| 권호 |
25권 2호, p.2226 |
| 발표분야 |
WISET 여대학(원)생 공학연구팀제 지원사업 심화과정 결과 발표대회 (여성위원회) |
| 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 onto one 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 hybrid membrane showed low area resistance of 0.166 Ω cm2 and very low vanadium permeability of 1.95×10-9 cm2 min-1. The Nafion layer protected the PBI from chemical degradation in an accelerated oxidizing condition of 1M VO2+/5M H2SO4, which was subsequently examined in spectroscopic analysis. In the VRFB single cell performance test, the cell with the hybrid membrane showed better energy efficiency than the Nafion cell with no delamination observed between the Nafion layer and the PBI layer after the test was completed. |
| 저자 |
안수민1, 김태호2, 김성곤3
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| 소속 |
1서울대, 2한국화학(연), 3전북대 |
| 키워드 |
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| E-Mail |
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| 원문파일 |
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