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undergraduate thesis
Upotreba grafenskog papira u elektrokemijskim izvorima energije
Zagreb: University of Zagreb, Faculty of Chemical Engineering and Technology, 2020. urn:nbn:hr:149:465917
Jurić Kaćunić, Danijela
University of Zagreb
Faculty of Chemical Engineering and Technology

Institutional repository: Repository of Faculty of Chemical Engineering and Technology University of Zagreb

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Jurić Kaćunić, D. (2020). Upotreba grafenskog papira u elektrokemijskim izvorima energije (Undergraduate thesis). Zagreb: University of Zagreb, Faculty of Chemical Engineering and Technology. Retrieved from https://urn.nsk.hr/urn:nbn:hr:149:465917

Jurić Kaćunić, Danijela. "Upotreba grafenskog papira u elektrokemijskim izvorima energije." Undergraduate thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, 2020. https://urn.nsk.hr/urn:nbn:hr:149:465917

Jurić Kaćunić, Danijela. "Upotreba grafenskog papira u elektrokemijskim izvorima energije." Undergraduate thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, 2020. https://urn.nsk.hr/urn:nbn:hr:149:465917

Jurić Kaćunić, D. (2020). 'Upotreba grafenskog papira u elektrokemijskim izvorima energije', Undergraduate thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, accessed 04 November 2024, https://urn.nsk.hr/urn:nbn:hr:149:465917

Jurić Kaćunić D. Upotreba grafenskog papira u elektrokemijskim izvorima energije [Undergraduate thesis]. Zagreb: University of Zagreb, Faculty of Chemical Engineering and Technology; 2020 [cited 2024 November 04] Available at: https://urn.nsk.hr/urn:nbn:hr:149:465917

D. Jurić Kaćunić, "Upotreba grafenskog papira u elektrokemijskim izvorima energije", Undergraduate thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, Zagreb, 2020. Available at: https://urn.nsk.hr/urn:nbn:hr:149:465917

Metadata
TitleUpotreba grafenskog papira u elektrokemijskim izvorima energije
Title (english)Application of graphene paper in electrochemical energy power sources
AuthorDanijela Jurić Kaćunić
MentorMarijana Kraljić Roković (mentor)
Committee memberMarijana Kraljić Roković (predsjednik povjerenstva)
Committee memberJozefina Katić (član povjerenstva)
Committee memberIgor Sutlović (član povjerenstva)
GranterUniversity of Zagreb
Faculty of Chemical Engineering and Technology
Zagreb
Defense date and country2020-09-21, Croatia
Scientific / art field,
discipline and subdiscipline		TECHNICAL SCIENCES
Chemical Engineering
Abstract
Cilj ovog rada bio je prirediti papir od reduciranog grafenovog oksida (rGO) elektrokemijskim postupkom. Kao prekursor u sintezi rGO korišten je grafenov oksid (GO) koji je dobiven u laboratoriju Hummersovom metodom. U prvom koraku je iz otopine GO priređen GO papir koji je potom elektrokemijskom redukcijom preveden u rGO papir. Dobiveni rGO papir je korišten kao aktivni materijal u superkondenzatoru. Ispitivanje superkondenzatora provedeno je u dvoelektrodnom sustavu u kojem je korišten strujni kolektor od nikla, staklena vlakna kao separator te rGO kao aktivni materijal. Superkondenzatori su ispitani metodama cikličke voltametrije (CV), kronopotenciometrije (CP) i metodom elektrokemijske impedancijske strukture (EIS). Ispitivanje metodom CV provedeno je u raznim granicama napona i uz različite brzine promjene potencijala. Metodom kronopotenciometrije je provedeno ispitivanje punjenja/ pražnjenja superkondenzatora tijekom 1000 ciklusa uz dvije različite specifične struje, 0,69 A g^-1 i 1,17 A g^-1. Superkondenzator 2 je pokazao bolja svojstva što je posljedica bolje izvedbe superkondenzatora. Pri tome je zabilježen specifični kapacitet od 31,00 F g^-1, specifična energija od 6,20 Wh kg^-1 i specifična snaga od 2,26 kW kg^-1.
Abstract (english)
The aim of this work was to prepare reduced graphene oxide (rGO) paper by electrochemical process. Graphene oxide (GO) obtained in the laboratory by the Hummers method was used as a precursor in the synthesis of rGO. In the first step, GO paper was prepared by using GO solution and in the second step it was reduced in order to obtain rGO paper. The resulting rGO paper was used as the active material in the supercapacitor. The supercapacitor characterisation was performed in a two-electrode system by using a nickel current collector, glass fibres as a separator and rGO as the active material. The supercapacitors were tested by using cyclic voltammetry (CV), chronopotentiometry (CP) and electrochemical impedance structure (EIS) methods. The CV test was performed at different voltage limits and at different scan rates. The chronopotentiometry method was used in order to obtain charging -discharging properties of supercapacitors, during 1000 cycles, by applying two different specific currents, 0.69 A g^-1 and 1.17 A g^-1. Supercapacitor 2 showed better properties as a result of better performance of the supercapacitor. A specific capacitance of 31.00 F g^-1, a specific energy of 6.20 Wh kg^-1 and a specific power of 2.26 kW kg^-1 were recorded.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:149:465917
Study programmeTitle: Chemical Engineering - Undergraduate study
Study programme type: university
Study level: undergraduate
Academic / professional title: sveučilišni/a prvostupnik/ prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka kemijskog inženjerstva (sveučilišni/a prvostupnik/ prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka kemijskog inženjerstva)
Type of resourceText
File originBorn digital
Access conditionsOpen access
Terms of useLicence In copyright icon
Created on2023-05-04 10:04:05