| 학회 |
한국고분자학회 |
| 학술대회 |
2018년 봄 (04/04 ~ 04/06, 대전컨벤션센터) |
| 권호 |
43권 1호 |
| 발표분야 |
대학원생 구두발표 (발표15분) |
| 제목 |
Graphitic nanofibrous electrodes for all-vanadium redox flow battery |
| 초록 |
Vanadium redox flow battery (VRFB) has been focused as a one of next-generation large-scale energy storage devices. However, the polarization during the redox reactions in the carbon felt-type electrodes is one of the problems to be overcome for the stable cell performance. In this study, we fabricated graphitic nanofibrous electrode (GNE) with a high specific surface area of 213 m2 g-1 and highly graphitic structure for acid stability for a high energy efficiency of VRFB. The electrocatalytic properties of GNE led to beneficial catalytic effects such as low anodic and cathodic peak potential separation (△Ep) values of ~73.4 mV (catholyte) in a cyclic voltammetry conducted at a sweep rate of 2 mV s-1. In addition, a full cell test based on the GNE as negative and positive electrode indicated considerably improved energy efficiency of 85.8%, which is 12.4% higher than that (73.4%) of the commercial carbon felt-based VRFBs. |
| 저자 |
이민의1, 곽효원1, 엄정주1, 홍연경1, 윤영수2, 진형준1
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| 소속 |
1인하대, 2강원대 |
| 키워드 |
nanofiber; graphitie; electrode; vanadium; redox flow battery
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| E-Mail |
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