| POLYMERS AND POLYMER MATRIX COMPOSITES |
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| Study on the Influence of Graphene Oxide on Ion Transport in Polyurethane Gel |
| ZHANG Yulin1, XIAO Ying3, JIN Li1, HE Yonglyu1, CHEN Chen2, ZHOU Xingui2, ZHANG Jianwei1,*
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1 College of Aerospace Science and Engineering, National University of Defense Technology, Changsha 410073, China
2 Science and Technology on Advanced Ceramic Fibers and Composites Laboratory, College of Aerospace Science and Engineering, National University of Defense Technology, Changsha 410073, China
3 Hubei Institute of Aerospace Chemotechnology, Xiangyang 441003, Hubei, China |
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Abstract Polymer-based gel electrolytes for thermoelectric materials also have problems such as low ionic conductivity and poor mechanical properties. Graphene oxide (GO) with excellent thermoelectric properties was introduced as an additive to improve the comprehensive performance of the gel, and the changes of conductivity and Seebeck coefficient of different ratios of GO/polymer matrix polyurethane/ionic liquid EMIM DCA composite gels were studied, and the structure and morphology of the composite gels were observed. Variable emissivity devices were prepared, and infrared cameras were used to measure the regulation of infrared emissivity by composite gels. The simulation software was used to simulate and demonstrate the relevant parameters. The results shows that different proportions of GO and polyurethane ionogels have the effect of improving the electrical properties of composite gels, and the conductivity of the gel was 1.6×10-4 S/cm when the GO doping concentration was 0.3wt%, and the Seebeck coefficient value was 9.31 mV/K. The glass transition temperature of gels with GO is higher than that of pure polyurethane ion gels. The gel electrolyte device doped with 0.3% GO content dropped by about 50 ℃ on the surface of the carbon film within 20 s, showing stable and reliable properties. The parameter analysis results of the simulation software MS are generally consistent with the experimental results.
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Published: 10 October 2025
Online: 2025-09-24
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