| 학회 |
한국공업화학회 |
| 학술대회 |
2022년 봄 (05/11 ~ 05/13, 제주국제컨벤션센터(ICC JEJU)) |
| 권호 |
26권 1호 |
| 발표분야 |
포스터-전기화학 |
| 제목 |
Electrochemical activity of Mn3O4-modified graphite felt for vanadium redox flow battery |
| 초록 |
Vanadium redox flow battery (VRFB) is a type of rechargeable flow battery. Electrode material is one of the key components of VRFB due to the redox reaction of V ions affecting the energy efficiency of VRFB. However, the widely used carbon-based materials for VRFB electrode have poor catalytic activity of V ion. In order to improve the electrode performance, nano-sized Mn3O4/thermal-treated graphite felt(TGF) composites are prepared as the electrode for VRFB. The Mn3O4/TGF prepared by two-step process, in which tetrabutylammonium(TBA) permanganate is reduced to amorphous MnO2 particles contained TBA ion on the TGF surface and subsequently converted to the Mn3O4/TGF by thermal treatment. The results show that the peak separation of the V ions redox reaction on the as-prepared electrode is significantly reduced and also peak current is increased. The VRFB with Mn3O4/TGF electrodes exhibits an higher energy and voltage efficiency than that of the VRFB assembled with TGF at 80mA/cm2. |
| 저자 |
박승화, 김영권, 유지상
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| 소속 |
한국전자기술(연) |
| 키워드 |
Vanadium redox flow battery; Electrocatalst; Manganese oxide; Kinetics
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| E-Mail |
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