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undergraduate thesis
Utjecaj grafenovog oksida na pseudokapacitivna svojstva poli(3,4-etilendioksitiofena)
Zagreb: University of Zagreb, Faculty of Chemical Engineering and Technology, 2018. urn:nbn:hr:149:355347
Trinki, Hrvoje
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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Trinki, H. (2018). Utjecaj grafenovog oksida na pseudokapacitivna svojstva poli(3,4-etilendioksitiofena) (Undergraduate thesis). Zagreb: University of Zagreb, Faculty of Chemical Engineering and Technology. Retrieved from https://urn.nsk.hr/urn:nbn:hr:149:355347

Trinki, Hrvoje. "Utjecaj grafenovog oksida na pseudokapacitivna svojstva poli(3,4-etilendioksitiofena)." Undergraduate thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, 2018. https://urn.nsk.hr/urn:nbn:hr:149:355347

Trinki, Hrvoje. "Utjecaj grafenovog oksida na pseudokapacitivna svojstva poli(3,4-etilendioksitiofena)." Undergraduate thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, 2018. https://urn.nsk.hr/urn:nbn:hr:149:355347

Trinki, H. (2018). 'Utjecaj grafenovog oksida na pseudokapacitivna svojstva poli(3,4-etilendioksitiofena)', Undergraduate thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, accessed 25 December 2024, https://urn.nsk.hr/urn:nbn:hr:149:355347

Trinki H. Utjecaj grafenovog oksida na pseudokapacitivna svojstva poli(3,4-etilendioksitiofena) [Undergraduate thesis]. Zagreb: University of Zagreb, Faculty of Chemical Engineering and Technology; 2018 [cited 2024 December 25] Available at: https://urn.nsk.hr/urn:nbn:hr:149:355347

H. Trinki, "Utjecaj grafenovog oksida na pseudokapacitivna svojstva poli(3,4-etilendioksitiofena)", Undergraduate thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, Zagreb, 2018. Available at: https://urn.nsk.hr/urn:nbn:hr:149:355347

Metadata
TitleUtjecaj grafenovog oksida na pseudokapacitivna svojstva poli(3,4-etilendioksitiofena)
Title (english)The influence of graphene oxide on the pseudocapacitive properties of poly(3,4-ethylenedioxythiophene)
AuthorHrvoje Trinki
MentorMarijana Kraljić Roković (mentor)
Committee memberMarijana Kraljić Roković (predsjednik povjerenstva)
Committee memberElvira Vidović (član povjerenstva)
Committee memberSuzana Sopčić (član povjerenstva)
GranterUniversity of Zagreb
Faculty of Chemical Engineering and Technology
Zagreb
Defense date and country2018-09-13, Croatia
Scientific / art field,
discipline and subdiscipline		TECHNICAL SCIENCES
Chemical Engineering
Chemical Engineering in Material Development
Abstract
Cilj ovog rada bio je ugraditi grafenov oksid (GO) u strukturu poli(3,4-etilendioksitiofena) (PEDOT) te ispitati njegov utjecaj na pseudokapacitivna svojstva PEDOT sloja. Metodom kronopotenciometrije određen je optimalan potencijal i optimalna koncentracija Na-polistirensulfonata (PSS) potrebna za sintezu PEDOT i PEDOT/GO slojeva. Sinteza je provedena metodom kronoamperometrije uz različita vremena trajanja sinteze. Polarizacija slojeva na vrijednost potencijala -1 V provedena je s namjerom reduciranja nevodljivog GO u reducirani grafenov oksid (rGO) koji pokazuje dobru električnu provodnost. Elektrokemijska, strukturna i morfološka karakterizacija sintetiziranih PEDOT i PEDOT/GO slojeva provedena je korištenjem tehnike cikličke voltametrije, elektrokemijske impedancijske spektroskopije, UV/Vis spektrofotometrije te metodom skenirajuće elektronske mikroskopije. Uspješno su provedene sinteze PEDOT i PEDOT/GO slojeva kod različitih vremena. Isto tako uspješno je provedena redukcija GO ugrađenog u PEDOT/GO sloj kod potencijala od -1 V. PEDOT slojevi različitih debljina pokazali su čisto kapacitivno ponašanje, dok je za slojeve PEDOT/GO dobiven viši stupanj reverzibilnosti uz smanjenje kapaciteta nakon polarizacije kod potencijala -1 V. Ugradnja GO u PEDOT/GO sloj potvrđena je korištenjem UV/Vis spektrofotometrije te metodom skenirajuće elektronske mikroskopije.
Abstract (english)
The goal of this research was the incorporation of graphene oxide (GO) in the structure of poly-3, 4-ethylenedioxythiophene (PEDOT) and examination of its influence on the pseudocapacitive properties of PEDOT layer. The optimal potential and Na-polystyrene sulfonate (PSS) concentration for the synthesis of PEDOT and PEDOT/GO layers was determined by chronopotentiometric measurements. The synthesis was conducted via chronoamperometry method with different synthesis times. In order to reduce GO to its conductive form, the reduced GO (rGO), polarization of the synthesized layers was carried out at the potential value of -1 V. Cyclic voltammetry, electrochemical impedance spectroscopy, UV/Vis spectrophotometry and scanning electron microscopy were applied in order to characterize electrochemical, structural and morphological properties of PEDOT and PEDOT/GO layers. The synthesis of PEDOT and PEDOT/GO layers was carried our successfully, as well as, the reduction of GO to rGO at the potential value of -1 V. PEDOT layers of different thickness exhibited pure capacitive behaviour, while PEDOT/GO layers showed a higher degree of reversibility and lower capacitance after polarization at the potential value of -1 V. The incorporation of GO into the PEDOT layers was confirmed by using UV/Vis spectrophotometry and scanning electron microscopy.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:149:355347
Study programmeTitle: Applied Chemistry - Undergraduate study; specializations in: Environmental chemistry and green technologies, Advanced materials and technologies, Applied organic chemistry
Course: Advanced materials and technologies
Study programme type: university
Study level: undergraduate
Academic / professional title: sveučilišni/a prvostupnik/prvostupnica (baccalaureus/baccalaurea) primijenjene kemije (sveučilišni/a prvostupnik/prvostupnica (baccalaureus/baccalaurea) primijenjene kemije)
Type of resourceText
File originBorn digital
Access conditionsOpen access
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Created on2021-11-22 12:55:30