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master's thesis
Utjecaj veličine iona na odziv pojedinačnih elektroda superkondenzatora
Zagreb: University of Zagreb, Faculty of Chemical Engineering and Technology, 2022. urn:nbn:hr:149:508802
Burazer, Lucija
University of Zagreb
Faculty of Chemical Engineering and Technology

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

Cite this document

Burazer, L. (2022). Utjecaj veličine iona na odziv pojedinačnih elektroda superkondenzatora (Master's thesis). Zagreb: University of Zagreb, Faculty of Chemical Engineering and Technology. Retrieved from https://urn.nsk.hr/urn:nbn:hr:149:508802

Burazer, Lucija. "Utjecaj veličine iona na odziv pojedinačnih elektroda superkondenzatora." Master's thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, 2022. https://urn.nsk.hr/urn:nbn:hr:149:508802

Burazer, Lucija. "Utjecaj veličine iona na odziv pojedinačnih elektroda superkondenzatora." Master's thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, 2022. https://urn.nsk.hr/urn:nbn:hr:149:508802

Burazer, L. (2022). 'Utjecaj veličine iona na odziv pojedinačnih elektroda superkondenzatora', Master's thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, accessed 01 June 2024, https://urn.nsk.hr/urn:nbn:hr:149:508802

Burazer L. Utjecaj veličine iona na odziv pojedinačnih elektroda superkondenzatora [Master's thesis]. Zagreb: University of Zagreb, Faculty of Chemical Engineering and Technology; 2022 [cited 2024 June 01] Available at: https://urn.nsk.hr/urn:nbn:hr:149:508802

L. Burazer, "Utjecaj veličine iona na odziv pojedinačnih elektroda superkondenzatora", Master's thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, Zagreb, 2022. Available at: https://urn.nsk.hr/urn:nbn:hr:149:508802

Metadata
TitleUtjecaj veličine iona na odziv pojedinačnih elektroda superkondenzatora
Title (english)The influence of ionic size on individual electrodes in supercapacitors
AuthorLucija Burazer
MentorZoran Mandić (mentor)
Committee memberZoran Mandić (predsjednik povjerenstva)
Committee memberMarijana Kraljić Roković (član povjerenstva)
Committee memberVladimir Dananić (član povjerenstva)
GranterUniversity of Zagreb
Faculty of Chemical Engineering and Technology
Zagreb
Defense date and country2022-02-25, Croatia
Scientific / art field,
discipline and subdiscipline		TECHNICAL SCIENCES
Chemical Engineering
Abstract
U ovom radu konstruirani su simetrični elektrokemijski dvoslojni kondenzatori s ugljikovim elektrodama u dva različita organska elektolita: tetrabutilamonijevom heksafluorofosfatom (Bu4NPF6) i tetraetilamonijevom heksafluorofosfatom (Et4NPF6) u acetonitrilu. Superkondenzatori su testirani metodama kronopotenciometrije, cikličkom voltametrijom te elektrokemijskom impedancijskom spektroskopijom. Korištenje platinske referentne elektrode omogućilo je usporedbu razlika u odzivu individualnih elektroda te razlike pojedinih elektroda u odnosu na odziv cijelog superkondenzatora. Rezultati su pokazali da su mjerenja impedancijske spektroskopije osjetljiva na prisutnost referentne elektrode, dok isto nije utjecalo na cikličku voltametriju te kronopotenciometriju. Istraživanjem se potvrdilo da se specifični kapaciteti superkondenzatora kontinuirano smanjuju tijekom uzastopnih ciklusa. Veći specifični kapacitet ima superkondenzator s Et4NPF6 elektrolitom jer je njegov kation manjeg ionskog radijusa te stoga lakše i dublje prodire u pore elektrode.
Abstract (english)
In this work, symmetrical double-layer electrochemical capacitors with carbon electrodes in two different organic electrolytes: tetrabutylammonium hexafluorophosphate (Bu4NPF6) and tetraethylammonium hexafluorophosphate (Et4NPF6) in acetonitrile, were constructed. Supercapacitors were tested by chronopotentiometry, cyclic voltammetry and electrochemical impedance spectroscopy. Using a platinum reference electrode it was possible to compare the differences in the response of individual electrodes, and the differences of individual electrodes in relation to the response of the entire supercapacitor. The results showed that impedance spectroscopy measurements were sensitive to the presence of a reference electrode, while the same did not affect cyclic voltammetry and chronopotentiometry. Research has confirmed that the specific capacities of supercapacitors continuously decrease over successive cycles. The supercapacitor with Et4NPF6 electrolyte has a higher specific capacity because its cation has a smaller ionic radius and therefore penetrates easier and deeper into the pores of the electrode.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:149:508802
ProjectNumber: IP-2013-11-8825
Title: Elektrokemijski superkondenzator visoke snage i velikog sadržaja energije za primjenu u električnim vozilima
Title: High power-high energy electrochemical supercapacitor for hybrid electric vehicles
Acronym: ESUP-CAP
Leader: Zoran Mandić
Jurisdiction: Croatia
Funder: HRZZ
Funding stream: IP
Study programmeTitle: Applied Chemistry - Graduate 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: graduate
Academic / professional title: magistar/magistra primijenjene kemije (magistar/magistra primijenjene kemije)
Type of resourceText
File originBorn digital
Access conditionsAccess restricted to students and staff of home institution
Terms of useLicence In copyright icon
Created on2023-02-26 12:00:10