High ionic conductivity P(VDF-TrFE)/PEO blended polymer electrolytes for solid electrochromic devices
Solid polymer electrolytes with excellent ionic conductivity (above 10−4 S cm−1), which result in high optical modulation for solid electrochromic (EC) devices are presented. The combination of a polar host matrix poly(vinylidene fluoride-trifluoroethylene) P(VDF-TrFE) and a solid plasticized of a l...
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sg-ntu-dr.10356-980762020-06-01T10:13:40Z High ionic conductivity P(VDF-TrFE)/PEO blended polymer electrolytes for solid electrochromic devices Nguyen, Chien A. Xiong, Shanxin Ma, Jan Lu, Xuehong Lee, Pooi See School of Materials Science & Engineering Temasek Laboratories Solid polymer electrolytes with excellent ionic conductivity (above 10−4 S cm−1), which result in high optical modulation for solid electrochromic (EC) devices are presented. The combination of a polar host matrix poly(vinylidene fluoride-trifluoroethylene) P(VDF-TrFE) and a solid plasticized of a low molecular weight poly(ethylene oxide) (PEO) (Mw ≤ 20000) blended polymer electrolyte serves to enhance both the dissolution of lithium salt and the ionic transport. Calorimetric measurement shows a reduced crystallization due to a better intermixing of the polymers with small molecular weight PEO. Vibrational spectroscopy identifies the presence of free ions and ion pairs in the electrolytes with PEO of Mw ≤ 8000. The ionic dissolution is improved using PEO as a plasticizer when compared to liquid propylene carbonate, evidently shown in the transference number analysis. Ionic transport follows the Arrhenius equation with a low activation energy (0.16–0.2 eV), leading to high ionic conductivities. Solid electrochromic devices fabricated with the blended P(VDF-TrFE)/PEO electrolytes and polyaniline show good spectroelectrochemical performance in the visible (300–800 nm) and near-infrared (0.9–2.4 μm) regions with a modulation up to 60% and fast switching speed of below 20 seconds. The successful introduction of the solid polymer electrolytes with its best harnessed qualities helps to expedite the application of various electrochemical devices. 2013-06-17T06:55:56Z 2019-12-06T19:50:18Z 2013-06-17T06:55:56Z 2019-12-06T19:50:18Z 2011 2011 Journal Article Nguyen, C. A., Xiong, S., Ma, J., Lu, X., & Lee, P. S. (2011). High ionic conductivity P(VDF-TrFE)/PEO blended polymer electrolytes for solid electrochromic devices. Physical Chemistry Chemical Physics, 13(29), 13319-13326. 1463-9076 https://hdl.handle.net/10356/98076 http://hdl.handle.net/10220/10452 10.1039/c0cp01505a en Physical chemistry chemical physics © 2011 The Owner Societies. |
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Solid polymer electrolytes with excellent ionic conductivity (above 10−4 S cm−1), which result in high optical modulation for solid electrochromic (EC) devices are presented. The combination of a polar host matrix poly(vinylidene fluoride-trifluoroethylene) P(VDF-TrFE) and a solid plasticized of a low molecular weight poly(ethylene oxide) (PEO) (Mw ≤ 20000) blended polymer electrolyte serves to enhance both the dissolution of lithium salt and the ionic transport. Calorimetric measurement shows a reduced crystallization due to a better intermixing of the polymers with small molecular weight PEO. Vibrational spectroscopy identifies the presence of free ions and ion pairs in the electrolytes with PEO of Mw ≤ 8000. The ionic dissolution is improved using PEO as a plasticizer when compared to liquid propylene carbonate, evidently shown in the transference number analysis. Ionic transport follows the Arrhenius equation with a low activation energy (0.16–0.2 eV), leading to high ionic conductivities. Solid electrochromic devices fabricated with the blended P(VDF-TrFE)/PEO electrolytes and polyaniline show good spectroelectrochemical performance in the visible (300–800 nm) and near-infrared (0.9–2.4 μm) regions with a modulation up to 60% and fast switching speed of below 20 seconds. The successful introduction of the solid polymer electrolytes with its best harnessed qualities helps to expedite the application of various electrochemical devices. |
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School of Materials Science & Engineering |
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School of Materials Science & Engineering Nguyen, Chien A. Xiong, Shanxin Ma, Jan Lu, Xuehong Lee, Pooi See |
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Nguyen, Chien A. Xiong, Shanxin Ma, Jan Lu, Xuehong Lee, Pooi See |
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Nguyen, Chien A. Xiong, Shanxin Ma, Jan Lu, Xuehong Lee, Pooi See High ionic conductivity P(VDF-TrFE)/PEO blended polymer electrolytes for solid electrochromic devices |
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Nguyen, Chien A. |
title |
High ionic conductivity P(VDF-TrFE)/PEO blended polymer electrolytes for solid electrochromic devices |
title_short |
High ionic conductivity P(VDF-TrFE)/PEO blended polymer electrolytes for solid electrochromic devices |
title_full |
High ionic conductivity P(VDF-TrFE)/PEO blended polymer electrolytes for solid electrochromic devices |
title_fullStr |
High ionic conductivity P(VDF-TrFE)/PEO blended polymer electrolytes for solid electrochromic devices |
title_full_unstemmed |
High ionic conductivity P(VDF-TrFE)/PEO blended polymer electrolytes for solid electrochromic devices |
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high ionic conductivity p(vdf-trfe)/peo blended polymer electrolytes for solid electrochromic devices |
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2013 |
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https://hdl.handle.net/10356/98076 http://hdl.handle.net/10220/10452 |
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