한국응용과학기술학회지 (Journal of the Korean Applied Science and Technology)

  • 제32권4호
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  • Pages.718-723
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  • 2015
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  • 1225-9098(pISSN)
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  • 2288-1069(eISSN)
한국응용과학기술학회 (The Korean Society of Applied Science and Technology)
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A cross-linking poly(urethane acrylate) binder for Si negative electrode in Li-ion batteries (LIBs)

  • Jang, Suk-Yong (Graduate School of Knowledge Based Technology and Energy, Korea Polytechnic University)
  • 투고 : 2015.11.12
  • 심사 : 2015.12.14
  • 발행 : 2015.12.30
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초록

For the fabrication of the Si negative electrode in Li-ion batteries (LIBs) containing the cross-linking polymer binder, in this work, the urethane acrylate (UA) oligomer was synthesized via a simple synthetic process. The cross-linked poly(urethane acrylate) (CPUA)/carbone black (CB)/Si composite (CPUA/CB/Si composite) was fabricated through reactions between their reactive vinyl segments in the UA oligomer. Interestingly, the CPUA/CB/Si composite showed better cycle performance than the poly(vinylidene fluoride) (PVdF)/CB/Si composite (PVdF/CB/Si composite) and the polyurethane (PU)/CB/Si composite (PU/CB/Si composite). The CPUA/CB/Si composite had the best lithiation of about $2586mAh\;g^{-1}$. The UA oligomer showed a good compatibility with the electrode materials and current collector after and before a curing process.

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