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XPS Analysis of Lithium Surface and Modification of Surface State for Uniform Deposition of Lithium

Published online by Cambridge University Press:  15 February 2011

K. Kanamura ,
S. Shiraishi  and
Z. Takehara
K. Kanamura
Affiliation:
Division of Energy and Hydrocarbon Chemistry, Graduate School of Engineering, Kyoto University, Yoshida-honmachi, Sakyo-ku, Kyoto 606-01, Japan
S. Shiraishi
Affiliation:
Division of Energy and Hydrocarbon Chemistry, Graduate School of Engineering, Kyoto University, Yoshida-honmachi, Sakyo-ku, Kyoto 606-01, Japan
Z. Takehara
Affiliation:
Division of Energy and Hydrocarbon Chemistry, Graduate School of Engineering, Kyoto University, Yoshida-honmachi, Sakyo-ku, Kyoto 606-01, Japan
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Abstract

The surface modification of lithium deposited at various current densities in propylene carbonate containing 1.0 ml dm−3 LiCIO4 was performed by addition of various amount of HF into the electrolyte, in order to investigate the effect of the HF addition on the surface reaction of lithium. XPS and SEM analyses showed that the surface state of lithium was influenced by the concentration of HF and the electrodeposition current. These two parameters are related to the chemical reaction rate of the lithium surface with HF and the electrodeposition rate of lithium, respectively. The surface modification was highly effective in suppressing lithium dendrite formation when the chemical reaction rate with HF was greater than the electrochemical deposition rate of lithium.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 393: Symposium W – Materials for Electrochemical Energy Storage and Conversion , 1995 , 229
Copyright
Copyright © Materials Research Society 1995

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References

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