標題: Flexible solid-like electrolytes with ultrahigh conductivity and their applications in all-solid-state supercapacitors
作者: Yang, Chih-Chieh
Lin, Hao-Yang
Kumar, Amit
Pattanayak, Bhaskar
Tsai, Hung-Yi
Winie, Tan
Tseng, Tseung-Yuen
電子工程學系及電子研究所
Department of Electronics Engineering and Institute of Electronics
公開日期: 1-一月-2018
摘要: All-solid-state supercapacitors (ASSS) with solid-state electrolytes (SSEs) can be used to overcome the liquid leakage problem in devices. However, ionic conduction in solid electrolytes is one of the barriers to further improvements in ASSS. This paper describes the fabrication of a flexible SSE composed of poly(vinylidene fluoride-co-hexafluoropropylene), 1-butyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide, and ethylene carbonate, which demonstrates an ultrahigh conductivity of 8.52 mS cm(-1) and a wide 5 V operation voltage window of -2 to +3 V. Electrodes composed of active carbon, multiwall carbon nanotubes, and polyvinylidene fluoride were used as both anode and cathode to assemble a symmetrical supercapacitor. The resultant supercapacitor exhibits a maximum power density of 3747 W kg(-1) at an energy density of 7.71 W h kg(-1) and a maximum energy density 17.1 W h kg(-1) at a power density of 630 W kg(-1). It displays excellent cycling stability with 91.3% of the initial specific capacitance after 3000 charging/discharging cycles. This flexible SSE in this study demonstrates a high potential for use in energy storage, conversion, and wearable device applications.
URI: http://dx.doi.org/10.1039/c8ra04674c
http://hdl.handle.net/11536/148125
ISSN: 2046-2069
DOI: 10.1039/c8ra04674c
期刊: RSC ADVANCES
Volume: 8
起始頁: 30239
結束頁: 30247
顯示於類別:期刊論文