期刊
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
卷 162, 期 13, 页码 A7078-A7082出版社
ELECTROCHEMICAL SOC INC
DOI: 10.1149/2.0101513jes
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资金
- Office of Vehicle Technologies of the U.S. Department of Energy [DE-AC02-05CH11231]
The SEI layer on graphitic carbon electrodes is well known to protect effectively the electrode from further electrolyte reduction during long-term charge-discharge cycling process. Many different techniques have been applied to characterize the chemical and structural composition of this complex surface film. The standard vibrational optical spectroscopies, which offer molecular-level information are subject to the diffraction limit, which restricts their ability to probe at the nanoscale level of the SET building blocks. This work exploits infrared apertureless near-field microscopy that operates below the diffraction limit to characterize the SET layer on a model HOPG electrode. Variations in surface topography and chemical contrast are discussed in the context of SET composition and function. The promise of near-field techniques for characterization of electrochemical interfaces is briefly evaluated. (C) The Author(s) 2015. Published by ECS. All rights reserved.
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