prikaz prve stranice dokumenta Carbogels: carbonized conducting polyaniline/poly(vinyl alcohol) aerogels derived from cryogels for electrochemical capacitors
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Carbogels: carbonized conducting polyaniline/poly(vinyl alcohol) aerogels derived from cryogels for electrochemical capacitors
Journal of Materials Chemistry A, 7 (2019), 4; 1785-1796. https://doi.org/10.1039/c8ta09574d
Bober, Patrycja; Pfleger, Jiří; Pašti, Igor A.; Gavrilov, Nemanja; Filippov, Sergey K.; Klepac, Damir; Trchová, Miroslava; Hlídková, Helena; Stejskal, Jaroslav

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Bober, P., Pfleger, J., Pašti, I. A., Gavrilov, N., Filippov, S. K., Klepac, D. ... Stejskal, J. (2019). Carbogels: carbonized conducting polyaniline/poly(vinyl alcohol) aerogels derived from cryogels for electrochemical capacitors. Journal of Materials Chemistry A, 7. (4), 1785-1796. doi: 10.1039/c8ta09574d

Bober, Patrycja, et al. "Carbogels: carbonized conducting polyaniline/poly(vinyl alcohol) aerogels derived from cryogels for electrochemical capacitors." Journal of Materials Chemistry A, vol. 7, br. 4, 2019, str. 1785-1796. https://doi.org/10.1039/c8ta09574d

Bober, Patrycja, Jiří Pfleger, Igor A. Pašti, Nemanja Gavrilov, Sergey K. Filippov, Damir Klepac, Miroslava Trchová, Helena Hlídková i Jaroslav Stejskal. "Carbogels: carbonized conducting polyaniline/poly(vinyl alcohol) aerogels derived from cryogels for electrochemical capacitors." Journal of Materials Chemistry A 7, br. 4 (2019): 1785-1796. https://doi.org/10.1039/c8ta09574d

Bober, P., et al. (2019) 'Carbogels: carbonized conducting polyaniline/poly(vinyl alcohol) aerogels derived from cryogels for electrochemical capacitors', Journal of Materials Chemistry A, 7(4), str. 1785-1796. doi: 10.1039/c8ta09574d

Bober P, Pfleger J, Pašti IA, Gavrilov N, Filippov SK, Klepac D, i sur.. Carbogels: carbonized conducting polyaniline/poly(vinyl alcohol) aerogels derived from cryogels for electrochemical capacitors. Journal of Materials Chemistry A [Internet]. 2019. [pristupljeno 21.10.2024.];7(4):1785-1796. doi: 10.1039/c8ta09574d

P. Bober, et al., "Carbogels: carbonized conducting polyaniline/poly(vinyl alcohol) aerogels derived from cryogels for electrochemical capacitors", Journal of Materials Chemistry A, vol. 7, br. 4, str. 1785-1796, 2019. [Online]. Dostupno na: https://urn.nsk.hr/urn:nbn:hr:184:241368. [Citirano: 21.10.2024.]

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Naslov (engleski)Carbogels: carbonized conducting polyaniline/poly(vinyl alcohol) aerogels derived from cryogels for electrochemical capacitors
AutorPatrycja Bober
AutorJiří Pfleger
AutorIgor A. Pašti
AutorNemanja Gavrilov
AutorSergey K. Filippov
AutorDamir Klepac
AutorMiroslava Trchová
AutorHelena Hlídková
AutorJaroslav Stejskal
Autorova ustanovaSveučilište u Rijeci
Medicinski fakultet
(Katedra za medicinsku kemiju, biokemiju i kliničku kemiju)
Znanstveno / umjetničko
područje, polje i grana		BIOMEDICINA I ZDRAVSTVO
Temeljne medicinske znanosti
Medicinska biokemija
Sažetak (engleski)
Polyaniline cryogels supported with poly(vinyl alcohol) represent soft conducting macroporous materials suitable for conversion to aerogels by freeze-drying and, subsequently, to nitrogen- containing carbogels by carbonization in an inert atmosphere at 500-600 degrees C. The process was followed by thermogravimetric analysis and Raman spectroscopy at the molecular level. The spectral features indicate a significant degree of structural disorder in the material due to the extensive nitrogen and oxygen incorporation into the carbon sp(2) network, which is important for the improvement of capacitive performance. The macroporous morphology is preserved after carbonization but the specific surface area increased from 12 to 680 m(2) g(-1) after exposure to 500 degrees C in an inert atmosphere. The original conductivity of the cryogel swollen with an acid solution, 0.07 S cm(-1), was reduced to 2 x 10(-4) S cm(-1) for the aerogel and again to 10(-9) S cm(-1) as the carbonization progressed. The impedance spectra display Maxwell-Wagner-Sillars relaxation typical of heterogeneous composite systems with the contribution of ionic conductivity. The decrease in conductivity is in agreement with the significant drop in the static dielectric constant observed by broad-band dielectric spectroscopy and decrease in the spin number determined by electron paramagnetic resonance spectroscopy. Switching in the capacitive response from that dominated by faradaic surface processes at lower treatment temperatures to that of double-layer charging at elevated temperatures is evidenced, while the correlation between surface spin density and specific capacitance is emphasized. The results can be used as guidance for the rational design of novel active materials for electrochemical capacitors.
Ključne riječi (engleski)
Jezikengleski
Vrsta publikacijeZnanstveni rad - Izvorni znanstveni rad
Status objaveObjavljen
Vrsta recenzijeRecenziran - međunarodna recenzija
Verzija publikacijeObjavljena verzija rada (izdavačev PDF)
Naslov časopisaJournal of Materials Chemistry A
Brojčani podacivol. 7, br. 4, str. 1785-1796
p-ISSN2050-7488
DOIhttps://doi.org/10.1039/c8ta09574d
URN:NBNurn:nbn:hr:184:241368
Datum objave publikacije2019
URL dokumentahttp://bib.irb.hr/1048542
Vrsta resursaTekst
Prava pristupaInstitucijski pristup
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Datum i vrijeme pohrane2022-02-09 08:58:01