Modified supramolecular carboxylated chitosan as hydrogel electrolyte for quasi-solid-state supercapacitors
Yang, Hezhen2; Ji, Xiwei2; Tan, Yongtao1,2; Liu, Ying1,2; Ran, Fen1,2
AbstractHydrogel-based electrolytes are becoming generally more preferred for electrolyte materials for quasi-solidstate/flexible supercapacitors due to their shape-controlled, high ionic conductivity, no liquid leakage, certain mechanical strength, and flexibility. Here, we develop a modified supramolecular carboxylated chitosan hydrogel electrolyte (CYCTS-g-PAM-Li2SO4) synthesized through a free radical graft copolymerization of acrylamide monomers and chemical crosslinking. Compared with PAM-based hydrogel electrolyte (PAM-Li2SO4), the modified hydrogel electrolyte of CYCTS-g-PAM-Li2SO4 exhibits better performance including higher ionic conductivity (1.74 x 10(-2) S cm(-1)), better electrolyte absorbability (280%) as well as improved mechanical properties (2.25 MPa). A symmetric quasi-solid-state EDLC (electronic double layer capacitor) by sandwiching activated carbon film electrodes with CYCTS-g-PAM-Li2SO4 as the electrolyte and carbon cloths as the current collectors. Notably, the device shows a wide potential window of 0-1.4 V and delivers a high energy density of 8.7 Wh kg(-1) at a power density of 350.3 W kg(-1). Interestingly, two devices connected in series can light an LED lamp. To our knowledge, this is the first time that reported the modified carboxylated chitosan hydrogel electrolyte for quasi-solid-state supercapacitors, which has application potentials for the modified carboxylated chitosan as hydrogel electrolyte for quasi-solid-state, flexible, and portable energy storage devices.
KeywordCarboxylated chitosan Hydrogel electrolyte Graft copolymerization Quasi-solid-state supercapacitors
Indexed BySCI ; SCIE
Funding ProjectNational Natural Science Foundation of China[51203071][51363014][51463012][51763014] ; China Postdoctoral Science Foundation[2014M552509][2015T81064] ; Natural Science Funds of the Gansu Province[1506RJZA098]
WOS Research AreaChemistry ; Electrochemistry ; Energy & Fuels ; Materials Science
WOS SubjectChemistry, Physical ; Electrochemistry ; Energy & Fuels ; Materials Science, Multidisciplinary
WOS IDWOS:000494885800031
EI Accession Number20193807460588
EI KeywordsElectrolytes
EI Classification Number701.1 Electricity: Basic Concepts and Phenomena - 704.1 Electric Components - 722.1 Data Storage, Equipment and Techniques - 801.4 Physical Chemistry - 802.2 Chemical Reactions - 804 Chemical Products Generally - 804.1 Organic Compounds - 813.2 Coating Materials - 815.2 Polymerization
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Cited Times:41[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Corresponding AuthorRan, Fen
Affiliation1.Lanzhou Univ Technol, State Key Lab Adv Proc & Recycling Nonferrous Met, Lanzhou 730050, Gansu, Peoples R China;
2.Lanzhou Univ Technol, Sch Mat Sci & Engn, Lanzhou 730050, Gansu, Peoples R China
First Author AffilicationColl Mat Sci & Engn
Corresponding Author AffilicationState Key Laboratory Of Gansu Advanced Non-Ferrous Metal Materials;  Coll Mat Sci & Engn
First Signature AffilicationColl Mat Sci & Engn
Recommended Citation
GB/T 7714
Yang, Hezhen,Ji, Xiwei,Tan, Yongtao,et al. Modified supramolecular carboxylated chitosan as hydrogel electrolyte for quasi-solid-state supercapacitors[J]. JOURNAL OF POWER SOURCES,2019,441.
APA Yang, Hezhen,Ji, Xiwei,Tan, Yongtao,Liu, Ying,&Ran, Fen.(2019).Modified supramolecular carboxylated chitosan as hydrogel electrolyte for quasi-solid-state supercapacitors.JOURNAL OF POWER SOURCES,441.
MLA Yang, Hezhen,et al."Modified supramolecular carboxylated chitosan as hydrogel electrolyte for quasi-solid-state supercapacitors".JOURNAL OF POWER SOURCES 441(2019).
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