CER - Central Repository
Institute of Chemistry, Technology and Metallurgy
    • English
    • Српски
    • Српски (Serbia)
  • English 
    • English
    • Serbian (Cyrillic)
    • Serbian (Latin)
  • Login
View Item 
  •   CER
  • IHTM
  • Radovi istraživača / Researchers' publications
  • View Item
  •   CER
  • IHTM
  • Radovi istraživača / Researchers' publications
  • View Item
JavaScript is disabled for your browser. Some features of this site may not work without it.

Mechanically activated carbonized rayon fibers as an electrochemical supercapacitor in aqueous solutions

Thumbnail
2017
13_0907_10.1016@_.electacta.2017.06.018.pdf (1.498Mb)
Authors
Vujković, Milica
Matovic, Ljiljana
Krstić, Jugoslav
Stojmenović, Marija
Dukić, Andelka
Babić, Biljana M.
Mentus, Slavko
Article (Accepted Version)
Metadata
Show full item record
Abstract
The activated carbon cloth (ACC), obtained by chemical/physical activation of carbonized rayon fibers, was grinded in a ball mill and studied from the aspect of double layer capacitance. The changes in pore structure, morphology and acid/basic properties caused by ball milling were studied by means of N-2 adsorption/desorption, Fourier-transformed infrared spectrometry, Boehm's titration and Scanning Electron Microscopy. Both potentiodynamic and galvanostatic cycling were used to evaluate the double layer capacitance in three alkaline, acidic and neutral aqueous solutions (KOH, H2SO4 and Na2SO4). While double layer capacitance of original ACC was found to be negligible, ball milled material (ACCm) displayed capacitance in the range of supercapacitors. In order to explain this huge capacitance improvement, we found that ball milling substantially increased the concentration of lactone, phenolic and quinone groups on the surface. We suggest that these groups, through improved hydrophilic...ity, enable faster ion diffusion into carbon micropores. The energy density stored by double layer was highest in neutral sodium sulphate solution. Namely, operational voltage of similar to 2 V and double layer capacitance of 220 F g(-1) at 1A g(-1), enable the energy density of ACCm/Na2SO4/ACCm capacitor of 31.7 Wh kg(-1) at 2000 W kg(-1), much higher than that of commercial EDLC carbon capacitors. According to the here presented literature survey in a tabular form, the energy density of the studied sample is also higher from that of numerous thus far published aqueous carbon capacitors.

Keywords:
carbon supercapacitor / mechanochemical activation / Na2SO4 aqueous electrolyte / high energy
Source:
Electrochimica Acta, 2017, 245, 796-806
Publisher:
  • Oxford : Pergamon-Elsevier Science Ltd
Funding / projects:
  • Lithium-ion batteries and fuel cells - research and development (RS-45014)
  • Synthesis, processing and characterization of nanostructured materials for application in the field of energy, mechanical engineering, environmental protection and biomedicine (RS-45012)
  • Serbian Academy of Sciences and Arts "Electrocatalysis in the contemporary processes of energy conve
  • NATO through the Science for Peace Project - EAP. SFPP 984925-DURAPEM
Note:
  • This is peer-reviewed version of the article: Milica Vujkovic, Ljiljana Matovic, Jugoslav Krstic, Marija Stojmenovic, Anelka Ðukic, Biljana Babic, Slavko Mentus, Mechanically activated carbonized rayon fibers as an electrochemical supercapacitor in aqueous solutions, Electrochimica Acta 2017, 245, 796-806, https://dx.doi.org/10.1016/j.electacta.2017.06.018
  • http://cer.ihtm.bg.ac.rs/handle/123456789/2135

DOI: 10.1016/j.electacta.2017.06.018

ISSN: 0013-4686

WoS: 000406762700088

Scopus: 2-s2.0-85020292566
[ Google Scholar ]
25
19
URI
https://cer.ihtm.bg.ac.rs/handle/123456789/3011
Collections
  • Radovi istraživača / Researchers' publications
Institution/Community
IHTM
TY  - JOUR
AU  - Vujković, Milica
AU  - Matovic, Ljiljana
AU  - Krstić, Jugoslav
AU  - Stojmenović, Marija
AU  - Dukić, Andelka
AU  - Babić, Biljana M.
AU  - Mentus, Slavko
PY  - 2017
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/3011
AB  - The activated carbon cloth (ACC), obtained by chemical/physical activation of carbonized rayon fibers, was grinded in a ball mill and studied from the aspect of double layer capacitance. The changes in pore structure, morphology and acid/basic properties caused by ball milling were studied by means of N-2 adsorption/desorption, Fourier-transformed infrared spectrometry, Boehm's titration and Scanning Electron Microscopy. Both potentiodynamic and galvanostatic cycling were used to evaluate the double layer capacitance in three alkaline, acidic and neutral aqueous solutions (KOH, H2SO4 and Na2SO4). While double layer capacitance of original ACC was found to be negligible, ball milled material (ACCm) displayed capacitance in the range of supercapacitors. In order to explain this huge capacitance improvement, we found that ball milling substantially increased the concentration of lactone, phenolic and quinone groups on the surface. We suggest that these groups, through improved hydrophilicity, enable faster ion diffusion into carbon micropores. The energy density stored by double layer was highest in neutral sodium sulphate solution. Namely, operational voltage of similar to 2 V and double layer capacitance of 220 F g(-1) at 1A g(-1), enable the energy density of ACCm/Na2SO4/ACCm capacitor of 31.7 Wh kg(-1) at 2000 W kg(-1), much higher than that of commercial EDLC carbon capacitors. According to the here presented literature survey in a tabular form, the energy density of the studied sample is also higher from that of numerous thus far published aqueous carbon capacitors.
PB  - Oxford : Pergamon-Elsevier Science Ltd
T2  - Electrochimica Acta
T1  - Mechanically activated carbonized rayon fibers as an electrochemical supercapacitor in aqueous solutions
VL  - 245
SP  - 796
EP  - 806
DO  - 10.1016/j.electacta.2017.06.018
ER  - 
@article{
author = "Vujković, Milica and Matovic, Ljiljana and Krstić, Jugoslav and Stojmenović, Marija and Dukić, Andelka and Babić, Biljana M. and Mentus, Slavko",
year = "2017",
abstract = "The activated carbon cloth (ACC), obtained by chemical/physical activation of carbonized rayon fibers, was grinded in a ball mill and studied from the aspect of double layer capacitance. The changes in pore structure, morphology and acid/basic properties caused by ball milling were studied by means of N-2 adsorption/desorption, Fourier-transformed infrared spectrometry, Boehm's titration and Scanning Electron Microscopy. Both potentiodynamic and galvanostatic cycling were used to evaluate the double layer capacitance in three alkaline, acidic and neutral aqueous solutions (KOH, H2SO4 and Na2SO4). While double layer capacitance of original ACC was found to be negligible, ball milled material (ACCm) displayed capacitance in the range of supercapacitors. In order to explain this huge capacitance improvement, we found that ball milling substantially increased the concentration of lactone, phenolic and quinone groups on the surface. We suggest that these groups, through improved hydrophilicity, enable faster ion diffusion into carbon micropores. The energy density stored by double layer was highest in neutral sodium sulphate solution. Namely, operational voltage of similar to 2 V and double layer capacitance of 220 F g(-1) at 1A g(-1), enable the energy density of ACCm/Na2SO4/ACCm capacitor of 31.7 Wh kg(-1) at 2000 W kg(-1), much higher than that of commercial EDLC carbon capacitors. According to the here presented literature survey in a tabular form, the energy density of the studied sample is also higher from that of numerous thus far published aqueous carbon capacitors.",
publisher = "Oxford : Pergamon-Elsevier Science Ltd",
journal = "Electrochimica Acta",
title = "Mechanically activated carbonized rayon fibers as an electrochemical supercapacitor in aqueous solutions",
volume = "245",
pages = "796-806",
doi = "10.1016/j.electacta.2017.06.018"
}
Vujković, M., Matovic, L., Krstić, J., Stojmenović, M., Dukić, A., Babić, B. M.,& Mentus, S.. (2017). Mechanically activated carbonized rayon fibers as an electrochemical supercapacitor in aqueous solutions. in Electrochimica Acta
Oxford : Pergamon-Elsevier Science Ltd., 245, 796-806.
https://doi.org/10.1016/j.electacta.2017.06.018
Vujković M, Matovic L, Krstić J, Stojmenović M, Dukić A, Babić BM, Mentus S. Mechanically activated carbonized rayon fibers as an electrochemical supercapacitor in aqueous solutions. in Electrochimica Acta. 2017;245:796-806.
doi:10.1016/j.electacta.2017.06.018 .
Vujković, Milica, Matovic, Ljiljana, Krstić, Jugoslav, Stojmenović, Marija, Dukić, Andelka, Babić, Biljana M., Mentus, Slavko, "Mechanically activated carbonized rayon fibers as an electrochemical supercapacitor in aqueous solutions" in Electrochimica Acta, 245 (2017):796-806,
https://doi.org/10.1016/j.electacta.2017.06.018 . .

DSpace software copyright © 2002-2015  DuraSpace
About CeR – Central Repository | Send Feedback

re3dataOpenAIRERCUB
 

 

All of DSpaceInstitutions/communitiesAuthorsTitlesSubjectsThis institutionAuthorsTitlesSubjects

Statistics

View Usage Statistics

DSpace software copyright © 2002-2015  DuraSpace
About CeR – Central Repository | Send Feedback

re3dataOpenAIRERCUB