Onion-like carbon as dopant/modification-free electrocatalyst for [VO](2+)/[VO2](+) redox reaction: Performance-control mechanism
- Title
- Onion-like carbon as dopant/modification-free electrocatalyst for [VO](2+)/[VO2](+) redox reaction: Performance-control mechanism
- Author
- 정두석
- Keywords
- Onion-like carbon; Vacancy generation; Inherent tensile strain; Vanadium redox reaction; First-principles calculation
- Issue Date
- 2018-02
- Publisher
- PERGAMON-ELSEVIER SCIENCE LTD
- Citation
- CARBON, v. 127, page. 31-40
- Abstract
- We investigate the application of the onion-like carbon (OLC) as an electrocatalyst for [VO](2+)/[VO2](+) redox flow reaction; its performance (electrocatalytic activity and reversibility) strongly increases with the synthesis to peak at 1800 degrees C in 1000-2000 degrees C range. The dopant/modification-free, optimized redox performances of the OLC is comparable to some of the best data in the literature of various types of carbon materials with post-synthesis modifications or doping. Mechanism behind such performance optimization is investigated employing various physical/electrochemical analyses as well as the first-principles calculations. We demonstrate that the carbon dangling bonds or the crystalline defects, generated by an inherent mechanism unique to the OLC, played a pivotal role in determining the electrocatalytic performances.
- URI
- https://www.sciencedirect.com/science/article/pii/S0008622317310734?via%3Dihubhttps://repository.hanyang.ac.kr/handle/20.500.11754/117687
- ISSN
- 0008-6223; 1873-3891
- DOI
- 10.1016/j.carbon.2017.10.073
- Appears in Collections:
- COLLEGE OF ENGINEERING[S](공과대학) > MATERIALS SCIENCE AND ENGINEERING(신소재공학부) > Articles
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