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Cross-linking of polymer and ionic liquid as high-performance gel electrolyte for flexible solid-state supercapacitors
Zhong, Xiongwei1,2; Tang, Jun1; Cao, Lujie1,2; Kong, Weiguang1; Sun, Zheng1; Cheng, Hua1; Lu, Zhouguang1; Pan, Hui2; Xu, Baomin1
2017-08
Source PublicationELECTROCHIMICA ACTA
ISSN0013-4686
Volume244Pages:112-118
Abstract

It is highly desirable to develop flexible solid-state electrochemical double-layer capacitors (EDLCs) with non-liquid electrolyte. However, it is still a great challenge to prepare gel polymer electrolyte (GPE) possessing high ionic conductivity and good mechanical property. In this work, a simple and novel method to improve the conductivity and mechanical properties of GPE film for their applications as electrolyte and separator in EDLC is presented. The GPE film is prepared by cross-linking ionic liquid (IL) with poly (ethylene oxide) (PEO) and benzophenone (Bp) followed by ultraviolet (UV) irradiation. Then, a non-woven cellulose separator (FPC) is used to absorb the GPE. By tuning the mass ratio (n) between IL and PEO, the flexible EDLC cooperated with low-cost active carbon and the electrolyte film with n = 10 has a high capacitance of 70.84 F.g(-1), a wide and stable electrochemical window of 3.5 V, an energy density of 30.13 Wh.kg(-1) and a power density of 874.8 W.kg(-1) at a current density of 1 A.g(-1), which can drive a 3.0 V light-emitting diode (LED). Importantly, the excellent performance of the flexible and low-cost EDLC can be maintained at a bending angle up to 180, indicating the ultra-flexibility. It is expected that the IL-PEO-FPC electrolyte film is a promising candidate of GPE for flexible devices and energy storage systems. (C) 2017 Elsevier Ltd. All rights reserved.

KeywordElectric Double-layer Capacitor Gel Polymer Electrolyte Flexible Ionic Liquid
DOI10.1016/j.electacta.2017.05.110
URLView the original
Indexed BySCI
Language英语
WOS Research AreaElectrochemistry
WOS SubjectElectrochemistry
WOS IDWOS:000404314100014
PublisherPERGAMON-ELSEVIER SCIENCE LTD
The Source to ArticleWOS
Fulltext Access
Citation statistics
Cited Times [WOS]:20   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionInstitute of Applied Physics and Materials Engineering
Affiliation1.Southern Univ Sci & Technol, Dept Mat Sci & Engn, Shenzhen 518055, Guangdong, Peoples R China
2.Univ Macau, Inst Appl Phys & Mat Engn, Macau, Peoples R China
First Author AffilicationUniversity of Macau
Recommended Citation
GB/T 7714
Zhong, Xiongwei,Tang, Jun,Cao, Lujie,et al. Cross-linking of polymer and ionic liquid as high-performance gel electrolyte for flexible solid-state supercapacitors[J]. ELECTROCHIMICA ACTA,2017,244:112-118.
APA Zhong, Xiongwei.,Tang, Jun.,Cao, Lujie.,Kong, Weiguang.,Sun, Zheng.,...&Xu, Baomin.(2017).Cross-linking of polymer and ionic liquid as high-performance gel electrolyte for flexible solid-state supercapacitors.ELECTROCHIMICA ACTA,244,112-118.
MLA Zhong, Xiongwei,et al."Cross-linking of polymer and ionic liquid as high-performance gel electrolyte for flexible solid-state supercapacitors".ELECTROCHIMICA ACTA 244(2017):112-118.
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