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Anion receptor-coated separator for lithium-ion polymer battery

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Abstract

Anion receptor-coated separators were prepared by coating poly(ethylene glycol) borate ester (PEGB) as an anion receptor and poly(vinyl acetate) (PVAc) as a good adhesive material towards electrodes onto microporous polyethylene (PE) separators. Gel polymer electrolytes were fabricated by soaking them in an liquid electrolyte, 1 M LiPF6 in EC/DEC/PC (30/65/5, wt.%). As the weight ratio of PEGB to PVAc in a coating layer increased, gel polymer electrolytes showed higher cationic conductivity and electrochemical stability. The cationic conductivity and electrochemical stability of the gel polymer electrolyte based on coated separator with PVAc/PEGB (2/5, weight ratio) could reach 2.8 × 10–4 S cm–1 and 4.8 V, respectively. Lithium-ion polymer cells (LiCoO2/graphite) based on gel polymer electrolytes with and without PEGB were assembled, and their electrochemical performances were evaluated.

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Acknowledgments

This work was supported by the IT R&D program of MKE/IITA (Core Lithium Secondary Battery Anode Materials for Next Generation Mobile Power Module, 2008-F-019-01)

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Authors and Affiliations

  1. Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology, 373-1, Guseong-dong, Yuseong-gu, Daejeon, 305-701, Republic of Korea

    Je An Lee, Jun Young Lee, Myung Hyun Ryou, Gi-Beom Han, Je-Nam Lee, Dong-Jin Lee & Jung-Ki Park

  2. Department of Applied Chemistry, Hanbat National University, San 16-1, Deokmyeong-dong, Yuseong-gu, Daejeon, 305-719, Republic of Korea

    Yong Min Lee

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  1. Je An Lee
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  2. Jun Young Lee
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  3. Myung Hyun Ryou
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  5. Je-Nam Lee
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Correspondence to Jung-Ki Park or Yong Min Lee.

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Lee, J.A., Lee, J.Y., Ryou, M.H. et al. Anion receptor-coated separator for lithium-ion polymer battery. J Solid State Electrochem 15, 753–757 (2011). https://doi.org/10.1007/s10008-010-1149-y

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  • DOI: https://doi.org/10.1007/s10008-010-1149-y

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