화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Journal of Industrial and Engineering Chemistry, Vol.59, 79-89, March, 2018
DOI10.1016/j.jiec.2017.10.009  Export Citation
Development and supercapacitor application of ionic liquid-incorporated gel polymer electrolyte films
Ravi Muchakayala, Shenhua Song†, Jingwei Wang, Youhua Fan, Manjunatha Bengeppagari1, Jianjun Chen2, and Manlin Tan2, †
  • Shenzhen Key Laboratory of Advanced Materials, Shenzhen Graduate School, Harbin Institute of Technology, Shenzhen 518055, China
  • 1Center for Biofluid and Biomimic Research, Pohang University of Science and Technology (POSTECH), Pohang 790-784, South Korea
  • 2Research Institute of Tsinghua University in Shenzhen, Shenzhen 518055, China
E-mail:,
A new gel polymer electrolyte based on 1-methyl-1-propylpyrrolidinium bis(trifluoromethyl sulfonyl) imide ([PMpyr][NTf2]) entrapped in poly(vinylidene fluoride-hexafluoropropylene) (PVdF-HFP) is prepared and optimized for flexible solid state supercapacitor applications. The structural, thermal, electrical and electrochemical properties of the ionic liquid gel polymer electrolyte membranes are studied by different characterization techniques. The transparent gel polymer electrolyte membranes exhibit high amorphicity and excellent thermal stability. The 20PVdF-HFP:80[PMpyr][NTf2] gel polymer electrolyte membrane possesses a high ionic conductivity (1.596 x 10-3 S cm-1) and wide electrochemi- cal stability window (4.7 V) at room temperature. It is used as the electrolyte material for the fabrication of flexible electric double layer supercapacitors (EDLCs) with multiwalled carbon nanotube (MWCNT)- added and unadded activated carbon (AC) electrodes. The performances of flexible EDLCs are evaluated using cyclic voltammetry and galvanostatic charge.discharge measurements. The EDLC with MWCNT- added AC electrodes exhibits apparently higher specific capacitance of electrode (156.64 F g-1), specific energy (30.69 Wh kg-1) and specific power (4.13 kW kg-1) than that with AC electrodes. The cyclic stability of the former is still in a good condition at the 2000th charge.discharge cycle and much better than the latter. The present comparative study indicates that the 20PVdF-HFP:80[PMpyr][NTf2] gel polymer electrolyte is a good candidate for the development of flexible solid-state supercapacitors.
Keywords:Gel polymer electrolyte films;Thermal stability;Electrical properties;Supercapacitors
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