Effect of succinic anhydride as an electrolyte additive on electrochemical characteristics of silicon thin-film electrode

The effect of an electrolyte additive, succinic anhydride (SA), on the electrochemical performances of a silicon thin-film electrode, which is prepared by radio-frequency magnetron sputtering, is investigated. The introduction of SA into a liquid electrolyte consisting of ethylene carbonate/diethyl...

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Bibliographic Details
Published in:Journal of power sources 2010-06, Vol.195 (11), p.3709-3714
Main Authors: Han, Gi-Beom, Ryou, Myung-Hyun, Cho, Kuk Young, Lee, Yong Min, Park, Jung-Ki
Format: Article
Language:English
Subjects:
Additives
Anhydrides
Applied sciences
Carbonates
Direct energy conversion and energy accumulation
Electrical engineering. Electrical power engineering
Electrical power engineering
Electrochemical conversion: primary and secondary batteries, fuel cells
Electrodes
Electrolyte additive
Electrolytes
Ethylene
Exact sciences and technology
Liquids
Lithium battery
Radio-frequency magnetron sputtering
Silicon
Silicon thin-film electrode
Solid/electrolyte interphase
Succinic anhydride
Thin films
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Summary:The effect of an electrolyte additive, succinic anhydride (SA), on the electrochemical performances of a silicon thin-film electrode, which is prepared by radio-frequency magnetron sputtering, is investigated. The introduction of SA into a liquid electrolyte consisting of ethylene carbonate/diethyl carbonate/1 M LiPF 6 significantly enhances the capacity retention and coulombic efficiency of the electrode. This improvement in the electrochemical performance of the electrode is attributed to modification of the solid/electrolyte interphase (SEI) layer by the introduction of SA. The differences in the characteristic properties of SEI layers, with or without SA, are explained by analysis with scanning electron microscopy, electrochemical impedance spectroscopy, and X-ray photoelectron spectroscopy.
ISSN:0378-7753
1873-2755
DOI:10.1016/j.jpowsour.2009.11.142