세가지 다른 형태의 탄소촉매 적용에 따른 바나듐레독스흐름전지 성능 변화에 관한 연구

추천호; 정상현; 정주영; 천승규; 이진우; 권용재

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자료유형: 학술저널

저자정보: 추천호 정상현 정주영 천승규 이진우 권용재

저널정보: 한국수소및신에너지학회 한국수소및신에너지학회논문집 한국수소 및 신에너지학회 논문집 제26권 제2호

발행연도: 2015.4

수록면: 170 - 178 (9page)

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In this study, we carry out a study on how to improve performance of vanadium redox flow battery (VRFB) through promoting reaction rate of rate determining vanadium reaction ([VO]2+/[VO₂]+). In order to do that, three different carbons like Vulcan (XC-72), CMK3 and MSU-F-C are adopted as the catalysts, while their catalytic activity and reaction reversibility are evaluated using half-cell tests. Their topological images are also measured by TEM. For estimation of the VRFB performance, multiple charge-discharge curves of VRFBs including the catalysts are measured by single cell tests. As a result of that, MSU-F-C shows relatively excellent catalytic activity and reaction reversibility as well as large surface area compared to those of Vulcan (XC-72) and CMK3. Also, in terms of the performance of VRFBs including the catalysts, VRFB including MSU-F-C indicates (i) low charging/discharging over potentials and low internal resistance, (ii) high charge/discharge capacities and (iii) high energy efficiency. These VRFB performance data are well agreed with results on catalytic activity and reaction reversibility. The reason that MSU-F-C induces superior VRFB performances is attributed to (i) its large surface area and (ii) its hydrophilic surface functional groups that mainly consist of hydroxyl bonds that are supposed to play active surface site role for facilitaing [VO]2+/[VO₂]+ redox reaction. Based on the above results, it is found that adoption of MSU-F-C as catalyst for VRFB results in improvement in VRFB performance by promoting the languid [VO]2+/[VO₂]+ redox reaction.

#[VO]< #sup> #2+< #/sup> #/[VO₂]< #sup> #+< #/sup> # redox reaction #다공성 탄소 촉매 #바나듐 4가 및 5가 레독스반응 #바나듐레독스흐름전지 #에너지 효율 #충/방전 커브 #Charge-discharge curve #Energy efficiency #MSU-F-C catalyst #Vanadium redox flow battery

참고문헌 (10)

참고문헌 신청

R.H. Huang / 2012 / Investigation of active electrodes modified with platinum/multiwalled carbon nanotube for vanadium redox flow battery / Journal of the Electrochemical Society 159:A1579

N.H. Choi / 2013 / Analysis of the oxidation of the V(II) by dissolved oxygen using UV-visible spectrophotometry in a vanadium redox flow battery / Journal of the Electrochemical Society 160:A973

K.J. Kim / 2012 / Novel catalytic effects of Mn3O4 for all vanadium redox flow batteries / Chemical Communications 48:5455

C. Ponce de León / 2006 / Redox flow cells for energy conversion / Journal of Power Sources 160:716

S. Jeong / 2013 / Performance enhancement in vanadium redox flow battery using platinum-based electrocatalyst synthesized by polyol process / Electrochimica Acta 114:439

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