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master's thesis
Superkondenzatori temeljeni na kompozitnim materijalima vodljivi polimer/grafen
Zagreb: University of Zagreb, Faculty of Chemical Engineering and Technology, 2019. urn:nbn:hr:149:426460
Vugrinec, Nikola
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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Vugrinec, N. (2019). Superkondenzatori temeljeni na kompozitnim materijalima vodljivi polimer/grafen (Master's thesis). Zagreb: University of Zagreb, Faculty of Chemical Engineering and Technology. Retrieved from https://urn.nsk.hr/urn:nbn:hr:149:426460

Vugrinec, Nikola. "Superkondenzatori temeljeni na kompozitnim materijalima vodljivi polimer/grafen." Master's thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, 2019. https://urn.nsk.hr/urn:nbn:hr:149:426460

Vugrinec, Nikola. "Superkondenzatori temeljeni na kompozitnim materijalima vodljivi polimer/grafen." Master's thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, 2019. https://urn.nsk.hr/urn:nbn:hr:149:426460

Vugrinec, N. (2019). 'Superkondenzatori temeljeni na kompozitnim materijalima vodljivi polimer/grafen', Master's thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, accessed 22 November 2024, https://urn.nsk.hr/urn:nbn:hr:149:426460

Vugrinec N. Superkondenzatori temeljeni na kompozitnim materijalima vodljivi polimer/grafen [Master's thesis]. Zagreb: University of Zagreb, Faculty of Chemical Engineering and Technology; 2019 [cited 2024 November 22] Available at: https://urn.nsk.hr/urn:nbn:hr:149:426460

N. Vugrinec, "Superkondenzatori temeljeni na kompozitnim materijalima vodljivi polimer/grafen", Master's thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, Zagreb, 2019. Available at: https://urn.nsk.hr/urn:nbn:hr:149:426460

Metadata
TitleSuperkondenzatori temeljeni na kompozitnim materijalima vodljivi polimer/grafen
Title (english)Supercapacitors based on conducting polymer/ graphene composite materials
AuthorNikola Vugrinec
MentorMarijana Kraljić Roković (mentor)
Committee memberMarijana Kraljić Roković (predsjednik povjerenstva)
Committee memberElvira Vidović (član povjerenstva)
Committee memberZvonimir Katančić (član povjerenstva)
GranterUniversity of Zagreb
Faculty of Chemical Engineering and Technology
Zagreb
Defense date and country2019-07-12, Croatia
Scientific / art field,
discipline and subdiscipline		TECHNICAL SCIENCES
Chemical Engineering
Abstract
Poli(3,4-etilendiokstiofen) (PEDOT) je π-konjugirani vodljivi polimer koji je pogodan za primjenu u superkondenzatorima kao aktivni materijal. Razlog tome je njegova niska cijena, dobra električna provodnost i pseudokapacitivna svojstva. Dodatno poboljšanje pseudokapacitivnih svojstava moguće je postići ako se koristi kompozitni materijala vodljivi polimer/grafen. Prisustvo grafena u strukturi vodljivog polimera povećava elektronsku vodljivost i njegovu poroznost, čime je olakšana izmjena iona tijekom odvijanja redoks reakcije. Cilj ovog rada je bila ugradnja grafenova oksida (GO) u strukturu PEDOT sloja elektrokemijskim putem u prisustvo površinski aktivne tvari poli(4-stiren sulfonata) (PSS) ili natrijevog dodecil sulfata (SDS). Morfološka i strukturna svojstva slojeva priređenih u prisustvu i bez prisustva grafena određena su korištenjem pretražne elektronske mikroskopije i UV/Vis spektroskopije. Elektrokemijska svojstva slojeva određena su metodama cikličke voltametrije (CV) i elektrokemijske impedancijske spektroskopije (EIS) u otopini 0,1 mol dm^-3 KCl. Od pripremljenih materijala sastavljeni su simetrični superkondenzatori koji su ispitani CV i EIS metodama. Stabilnost superkondenzatora određena je punjenjem/pražnjenjem superkondenzatora kod konstantne vrijednosti struje tijekom 1000 ciklusa.
Abstract (english)
Poly(3,4-ethylenedioxythiophene) (PEDOT) is a π-conjugated conductive polymer which is suitable as active material in supercapacitors application due to low price, good electric conductivity and pseudocapacitive properties. The pseudocapacitive properties of PEDOT layer can be improved by formation of PEDOT/graphene composite materials. The presence of graphene within the structure of conductive polymer increases its porosity and electron conductivity and therefore it facilitates redox reactions of conductive polymer. The goal of this work was to incorporate graphene oxide (GO) within the structure of PEDOT layer by means of electrochemical synthesis in the presence of a surfactant such as poly(4- styrene sulfonate) (PSS) and sodium dodecyl sulfate (SDS). Morphological and structural properties were analyzed by using UV/Vis spectroscopy and scanning electron microscopy. Electrochemical properties of the layers were determined by using cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS) in 0.1 mol dm^-3 KCl. Symmetric supercapacitors were assembled and tested by using CV and EIS methods. Supercapacitor stability was determined throughout 1000 charging/discharging cycles at constant current value.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:149:426460
Study programmeTitle: Materials Science and Engineering - Graduate study
Study programme type: university
Study level: graduate
Academic / professional title: magistar/magistra inženjer/inženjerka kemijskog inženjerstva (magistar/magistra inženjer/inženjerka kemijskog inženjerstva)
Type of resourceText
File originBorn digital
Access conditionsOpen access
Terms of useLicence In copyright icon
Created on2022-02-27 21:16:13