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https://hdl.handle.net/10356/98076
Title: | High ionic conductivity P(VDF-TrFE)/PEO blended polymer electrolytes for solid electrochromic devices | Authors: | Nguyen, Chien A. Xiong, Shanxin Ma, Jan Lu, Xuehong Lee, Pooi See |
Issue Date: | 2011 | Source: | 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. | Series/Report no.: | Physical chemistry chemical physics | Abstract: | 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. | URI: | https://hdl.handle.net/10356/98076 http://hdl.handle.net/10220/10452 |
ISSN: | 1463-9076 | DOI: | 10.1039/c0cp01505a | Schools: | School of Materials Science & Engineering | Research Centres: | Temasek Laboratories | Rights: | © 2011 The Owner Societies. | Fulltext Permission: | none | Fulltext Availability: | No Fulltext |
Appears in Collections: | MSE Journal Articles TL Journal Articles |
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