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master's thesis
Formiranje inhibirajućih slojeva na elektrodi od kalcija u Ca(BF4)2/acetonitril elektrolitu
Zagreb: University of Zagreb, Faculty of Chemical Engineering and Technology, 2024. urn:nbn:hr:149:058188
Grobenski, Paola
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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Grobenski, P. (2024). Formiranje inhibirajućih slojeva na elektrodi od kalcija u Ca(BF4)2/acetonitril elektrolitu (Master's thesis). Zagreb: University of Zagreb, Faculty of Chemical Engineering and Technology. Retrieved from https://urn.nsk.hr/urn:nbn:hr:149:058188

Grobenski, Paola. "Formiranje inhibirajućih slojeva na elektrodi od kalcija u Ca(BF4)2/acetonitril elektrolitu." Master's thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, 2024. https://urn.nsk.hr/urn:nbn:hr:149:058188

Grobenski, Paola. "Formiranje inhibirajućih slojeva na elektrodi od kalcija u Ca(BF4)2/acetonitril elektrolitu." Master's thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, 2024. https://urn.nsk.hr/urn:nbn:hr:149:058188

Grobenski, P. (2024). 'Formiranje inhibirajućih slojeva na elektrodi od kalcija u Ca(BF4)2/acetonitril elektrolitu', Master's thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, accessed 25 December 2024, https://urn.nsk.hr/urn:nbn:hr:149:058188

Grobenski P. Formiranje inhibirajućih slojeva na elektrodi od kalcija u Ca(BF4)2/acetonitril elektrolitu [Master's thesis]. Zagreb: University of Zagreb, Faculty of Chemical Engineering and Technology; 2024 [cited 2024 December 25] Available at: https://urn.nsk.hr/urn:nbn:hr:149:058188

P. Grobenski, "Formiranje inhibirajućih slojeva na elektrodi od kalcija u Ca(BF4)2/acetonitril elektrolitu", Master's thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, Zagreb, 2024. Available at: https://urn.nsk.hr/urn:nbn:hr:149:058188

Metadata
TitleFormiranje inhibirajućih slojeva na elektrodi od kalcija u Ca(BF4)2/acetonitril elektrolitu
Title (english)The formation of inhibiting layers on the calcium electrode in Ca(BF4)2/acetonitrile electrolyte
AuthorPaola Grobenski
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 country2024-09-13, Croatia
Scientific / art field,
discipline and subdiscipline		TECHNICAL SCIENCES
Chemical Engineering
Abstract
U ovom radu ispitana je ćelija s metalnom kalcijevom anodom i katodom od aktivnog ugljika uz 0,5 M otopinu elektrolita Ca(BF4)2 u acetonitrilu, s ciljem razvijanja reverzibilne kalcijeve negativne elektrode. Za određivanje elektrokemijskih svojstava mjerenja su provedena u troelektrodnom sustavu metodama cikličke voltametrije i elektrokemijske impedancijske spektroskopije, a nastali sloj na elektrodi karakteriziran je infracrvenom spektroskopijom s Fourierovim transformacijama. Predloženi su modeli ekvivalentnih električnih krugova. Mjerenje napona otvorenog kruga pokazuje pad napona uslijed aktivacije elektrode, te postupni porast popraćen inhibiranjem površine zbog nastajanja SEI sloja. Iz rezultata cikličke voltametrije vidljivo je intenzivno otapanje kalcija, praćeno pojavom jamičaste korozije. Rezultati ukazuju na stvaranje SEI sloja koji prekriva površinu elektrode i onemogućuje difuziju Ca2+ iona, čineći elektrodu ireverzibilnom.
Abstract (english)
In this study, a cell with a metallic calcium anode and an activated carbon cathode was examined using a 0,5 M solution of Ca(BF4)2 electrolyte in acetonitrile, with the aim of developing a reversible calcium negative electrode. To determine the electrochemical properties, measurements were conducted in a three-electrode system using cyclic voltammetry and electrochemical impedance spectroscopy, and the resulting layer on the electrode was characterized by Fourier transform infrared spectroscopy. Equivalent electrical circuit models are proposed. The open circuit voltage measurement showed a drop in voltage due to electrode activation, followed by a gradual increase accompanied by surface inhibition due to the formation of a solid electrolyte interphase (SEI) layer. Cyclic voltammetry measurements reveal intense calcium stripping, accompanied by pitting corrosion. The results indicate the formation of an SEI layer that covers the electrode surface and prevents the diffusion of Ca2+ ions, rendering the electrode irreversible.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:149:058188
Study programmeTitle: Chemical Engineering - Graduate study
Study programme type: university
Study level: graduate
Academic / professional title: sveučilišni/a magistar/magistra inženjer/inženjerka kemijskog inženjerstva (sveučilišni/a magistar/magistra inženjer/inženjerka kemijskog inženjerstva)
Type of resourceText
File originBorn digital
Access conditionsOpen access
Terms of useLicence In copyright icon
Created on2024-09-24 12:48:58