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Tailoring Surface Properties of Polymeric Separators for Lithium-Ion Batteries by Cyclonic Atmospheric-Pressure Plasma

Authors

  • Chun Huang,

    1. Department of Chemical Engineering and Materials Science, Yuan Ze University, 135 Yuan-Tung Road, Chung-Li 32003, Taiwan
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  • Chi-Cheng Lin,

    1. Department of Chemical Engineering and Materials Science, Yuan Ze University, 135 Yuan-Tung Road, Chung-Li 32003, Taiwan
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  • Ching-Yuan Tsai,

    1. Department of Chemical Engineering and Materials Science, Yuan Ze University, 135 Yuan-Tung Road, Chung-Li 32003, Taiwan
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  • Ruey-Shin Juang

    Corresponding author
    1. Department of Chemical Engineering and Materials Science, Yuan Ze University, 135 Yuan-Tung Road, Chung-Li 32003, Taiwan
    • Department of Chemical Engineering and Materials Science, Yuan Ze University, 135 Yuan-Tung Road, Chung-Li 32003, Taiwan Fax: +886 3 4638822
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Abstract

This paper reported surface modification and characterization of polymeric separators by cyclonic atmospheric-pressure plasma for Li-ion battery use. Water contact angles of the plasma-modified polymeric separator decreased with increasing treatment time and plasma power. Variations in surface morphology and chemical structure of the plasma-modified polymeric separators were confirmed by FESEM and XPS. XPS analysis revealed that the surfaces of plasma-modified polymeric separators had significantly higher concentrations of oxygen functional groups. Moreover, the cyclonic atmospheric-pressure plasma-modified polymeric separators showed excellent performance in electrochemical measurements.

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