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Cross-Linked Poly(vinylidene fluoride-co-hexafluoropropene) (PVDF-co-HFP) Gel Polymer Electrolyte for Flexible Li-Ion Battery Integrated with Organic Light Emitting Diode (OLED)

1
School of Advanced Materials Science and Engineering, Sungkyunkwan University (SKKU), Suwon 16419, Korea
2
Department of Applied Nano Mechanics, Korea Institute of Machinery and Materials (KIMM), Daejeon 305-343, Korea
3
SKKU Advanced Institute of Nanotechnology (SAINT), Sungkyunkwan University (SKKU), Suwon 16419, Korea
4
School of Chemical Engineering, Sungkyunkwan University (SKKU), Suwon 16419, Korea
5
Center for Integrated Nanostructure Physics (CINAP), Institute for Basic Science (IBS), Suwon 16419, Korea
6
Department of Energy Science, Sungkyunkwan University (SKKU), Suwon 16419, Korea
*
Authors to whom correspondence should be addressed.
These co-first authors contributed equally to this work.
Materials 2018, 11(4), 543; https://doi.org/10.3390/ma11040543
Received: 6 March 2018 / Revised: 28 March 2018 / Accepted: 28 March 2018 / Published: 2 April 2018
(This article belongs to the Section Energy Materials)
Here, we fabricate poly(vinylidene fluoride-co-hexafluoropropene) (PVDF-co-HFP) by electrospinning for a gel polymer electrolyte (GPE) for use in flexible Li-ion batteries (LIBs). As a solvent, we use N-methyl-2-pyrrolidone (NMP), which helps produce the cross-linked morphology of PVDF-co-HFP separator, owing to its low volatility. The cross-linked PVDF-co-HFP separator shows an uptake rate higher than that of a commercialized polypropylene (PP) separator. Moreover, the PVDF-co-HFP separator shows an ionic conductivity of 2.3 × 10−3 S/cm at room temperature, comparable with previously reported values. An LIB full-cell assembled with the PVDF-co-HFP-based GPE shows capacities higher than its counterpart with the commercialized PP separator, confirming that the cross-linked PVDF-co-HFP separator provides highly efficient ionic conducting pathways. In addition, we integrate a flexible LIB cell using the PVDF-co-HFP GPE with a flexible organic light emitting diode (OLED), demonstrating a fully flexible unit of LIB and OLED. View Full-Text
Keywords: cross-linked poly(vinylidene fluoride-co-hexafluoropropene) (PVDF-co-HFP); gel polymer electrolyte (GPE); electrospinning; N-methyl-2-pyrrolidone (NMP); ionic conductivity; flexible Li-ion batteries; organic light emitting diode (OLED) cross-linked poly(vinylidene fluoride-co-hexafluoropropene) (PVDF-co-HFP); gel polymer electrolyte (GPE); electrospinning; N-methyl-2-pyrrolidone (NMP); ionic conductivity; flexible Li-ion batteries; organic light emitting diode (OLED)
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MDPI and ACS Style

Kim, I.; Kim, B.S.; Nam, S.; Lee, H.-J.; Chung, H.K.; Cho, S.M.; Luu, T.H.T.; Hyun, S.; Kang, C. Cross-Linked Poly(vinylidene fluoride-co-hexafluoropropene) (PVDF-co-HFP) Gel Polymer Electrolyte for Flexible Li-Ion Battery Integrated with Organic Light Emitting Diode (OLED). Materials 2018, 11, 543.

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