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Updated: Feb 11, 2026

Surface Properties of Synthesized Nanoporous Carbon and Silica Matrices
Published on: March 27, 2019
Effects of Electrolyte Concentration on Surface Film Formation on Graphite in Ethylene Carbonate-Based Solutions
Soon-Ki Jeong1, Dong-Gui Choi1
1Department of Chemical Engineering, Soonchunhyang University, Asan, 336-745, South Korea.
Abstract:
The physicochemical properties of a surface film generated on a graphite surface were greatly dependent on the concentration of the electrolyte solution. Cyclic voltammetry results obtained using four ethylene carbonate-based solutions of different electrolyte (i.e., LiN(SO2C2F5)2) concentrations showed that the amount of irreversible current used to generate the surface film between 0.8 and 0.1 V decreased upon increasing the electrolyte concentration. Transmission electron microscopy results revealed that the thickness and morphology of the surface film were greatly affected by the concentration of the electrolyte solution. In addition, electrochemical impedance spectroscopy revealed that the resistance of the surface film was also affected by the electrolyte concentration. These results therefore indicated that both the chemical and physical properties of the surface film were affected by the concentration of the electrolyte solution.
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