Creating a new electrode material of supercapacitors from the waste multi-walled carbon nanotubes
Chen, Yong; Xu, Cheng; Zhao, Jiang; Huang, Jiandi; Xu, Hui; Gou, Guojun
AbstractMany adsorbents are discarded after removing pollutants, which always re-contaminateenvironment due to a release of pollutants again. The purpose of this study is to reuse the waste multi-walled carbon nanotubes (MWCNTs) who remove methylene blue (MB) from waste water as electrode material of supercapacitor. Herein, with a combination of polypyrrole (PPy), MWCNTs/MB/PPy composites are synthesized via chemical in-situ polymerization. The structure tests of the composites indicate that the surface property of MWCNTs, after adsorbing MB, is changed from hydrophobic to hydrophilic. Additionally, cyclic voltammetry (CV), galvanostatic charge-discharge (GCD), and electrochemical impedance spectrum (EIS) tests in three-electrode system demonstrate that at a current density of 5 mA cm(-2), the specific capacitance of MWCNTs/MB/PPy composites is 446 F g(-1). This result is higher than that of PPy and MWCNTs/PPy composites due to an extra pseudo-capacitance provided by MB. Moreover, a symmetric supercapacitor of MWCNTs/MB/PPy composites is assembled to successfully light a light emitting diodes (LED), which powerfully reveals the potential application of MWCNTs/MB/PPy composites. Obviously, the waste MWCNTs can be reused, meaning the dyes adsorbed on MWCNTs have no chance to pollute the environment again. (C) 2019 Elsevier Ltd. All rights reserved.
KeywordAdsorption Waste MWCNTs MWCNTs/MB/PPy composites Specific capacitance Symmetric supercapacitor
Indexed BySCI ; SCIE
Funding ProjectNational Natural Science Foundations of China[51663014][51503092][51763015] ; Natural Science Foundation of Gansu Province[2017GS10857]
WOS Research AreaElectrochemistry
WOS SubjectElectrochemistry
WOS IDWOS:000501468400018
EI Accession Number20194907788255
EI KeywordsMultiwalled carbon nanotubes (MWCN)
EI Classification Number444 Water Resources - 452.4 Industrial Wastes Treatment and Disposal - 701.1 Electricity: Basic Concepts and Phenomena - 761 Nanotechnology - 801.4.1 Electrochemistry - 802.3 Chemical Operations - 804.1 Organic Compounds - 815.1.1 Organic Polymers
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Cited Times:10[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Corresponding AuthorChen, Yong; Xu, Hui
AffiliationLanzhou Univ Technol, Coll Petrochem Engn, Lanzhou 730050, Gansu, Peoples R China
First Author AffilicationColl Petrochem Engn
Corresponding Author AffilicationColl Petrochem Engn
First Signature AffilicationColl Petrochem Engn
Recommended Citation
GB/T 7714
Chen, Yong,Xu, Cheng,Zhao, Jiang,et al. Creating a new electrode material of supercapacitors from the waste multi-walled carbon nanotubes[J]. ELECTROCHIMICA ACTA,2020,330.
APA Chen, Yong,Xu, Cheng,Zhao, Jiang,Huang, Jiandi,Xu, Hui,&Gou, Guojun.(2020).Creating a new electrode material of supercapacitors from the waste multi-walled carbon nanotubes.ELECTROCHIMICA ACTA,330.
MLA Chen, Yong,et al."Creating a new electrode material of supercapacitors from the waste multi-walled carbon nanotubes".ELECTROCHIMICA ACTA 330(2020).
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