Ion-solvent interaction for lithium-ion transfer at the interface between carbonaceous thin-film electrode and electrolyte

Tomokazu Fukutsuka; Fumihiro Sagane; Kohei Miyazaki; Takeshi Abe; Tomoyuki Toda; Yoshiaki Matsuo; Yosohiro Sugie; Zempachi Ogumi

doi:10.7209/tanso.2010.188

Research Papers

Ion-solvent interaction for lithium-ion transfer at the interface between carbonaceous thin-film electrode and electrolyte

Tomokazu Fukutsuka, Fumihiro Sagane, Kohei Miyazaki, Takeshi Abe, Tomoyuki Toda, Yoshiaki Matsuo, Yosohiro Sugie, Zempachi Ogumi

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Keywords: Carbon film, Chemical vapor deposition, Electrochemical analysis, Electrochemical properties, Battery

JOURNAL FREE ACCESS

2010 Volume 2010 Issue 245 Pages 188-191

DOI https://doi.org/10.7209/tanso.2010.188

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Abstract

A carbonaceous thin-film electrode was prepared by plasma-assisted chemical vapor deposition, and used as a model carbon electrode to study the interfacial reactions between a electrode and electrolyte. Lithium-ion transfer at the interface between carbonaceous thin-film electrode and electrolyte was studied by electrochemical impedance spectroscopy. In the Nyquist plots, semi-circles assigned to charge-transfer resistance were observed in high frequency region. Activation energies for lithium-ion transfer at the interface between carbonaceous thin-film electrode and electrolyte were evaluated, and the values were found to be dependent on the electrolyte solutions. The effects of ion-solvent interaction on the activation energies for the interfacial lithium-ion transfer are discussed based on theoretical calculations.

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