Journal
NANO LETTERS
Volume 13, Issue 12, Pages 5954-5960Publisher
AMER CHEMICAL SOC
DOI: 10.1021/nl4031083
Keywords
Ionic liquid; highly ordered pyrolytic graphite; electrochemical double layer; atomic force microscopy; force-distance curve
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Funding
- Fluid Interface Reactions, Structures and Transport (FIRST), an Energy Frontier Research Center
- U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences
- Oak Ridge National Laboratory by the Scientific User Facilities Division, Office of Basic Energy Sciences, U.S. Department of Energy
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Here we report the bias-evolution of the electrical double layer structure of an ionic liquid on highly ordered pyrolytic graphite measured by atomic force microscopy. We observe reconfiguration under applied bias and the orientational transitions in the Stern layer. The synergy between molecular dynamics simulation and experiment provides a comprehensive picture of structural phenomena and long and short-range interactions, which improves our understanding of the mechanism of charge storage on a molecular level.
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