Bias-dependent molecular-level structure of electrical double layer in ionic liquid on graphite.
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.
Center for Nanophase Materials Sciences, Oak Ridge National Laboratory , Oak Ridge, Tennessee 37831, United States.
Jennifer M
JM
Black
Deron
D
Walters
Aleksander
A
Labuda
Guang
G
Feng
Patrick C
PC
Hillesheim
Sheng
S
Dai
Peter T
PT
Cummings
Sergei V
SV
Kalinin
Roger
R
Proksch
Nina
N
Balke
D006108:Graphite / Q000737:chemistry*; D052578:Ionic Liquids / Q000737:chemistry*; D018625:Microscopy, Atomic Force / Q000379:methods*; D056004:Molecular Dynamics Simulation; D013499:Surface Properties
D052578:Ionic Liquids; D006108:Graphite