Elektrokemijska depozicija NiOOH/Nafion kompozitnih elektroda

undergraduate thesis

• Title (english): Electrochemical deposition of NiOOH/Nafion composite electrodes
• Author: Mia Plenča
• Mentor: Zoran Mandić (mentor)
• Committee member: Marijana Kraljić Roković (predsjednik povjerenstva)
• Committee member: Jozefina Katić (član povjerenstva)
• Committee member: Vladimir Dananić (član povjerenstva)
• Granter: University of Zagreb; Faculty of Chemical Engineering and Technology; Zagreb
• Defense date and country: 2015-09-18, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Chemical Engineering; Chemical Engineering in Material Development

Abstract

U ovom radu provedena je elektrokemijska anodna depozicija Ni(III) oksida na zlatnu
elektrodu s i bez prisustva Nafion membrane. Depozicija je provedena potenciostaskom
metodom na dva različita potencijala, E1=1,1 V i E2 = 1,2 V. Dobivene elektrode testirane su
metodom cikličke voltametrije u 0,1 M otopini KOH kroz vremenski interval od jednog sata.
Rezultati pokazuju da prisustvo Nafiona ima značajan utjecaj na elektrokemijska svojstva
dobivenih slojeva. Razlike se očituju u potencijalima registriranih strujnih vrhova te o
njihovim visinama što se objašnjava različitim udjelima kristalnih oblika NiOOH u
depeniranim slojevima kao i različitim kinetikama reakcije prijelaza naboja.

Abstract (english)

In this work anodic deposition of Ni (III) oxide on gold electrode was carried out with and
without Nafion membrane. Potentiostatic method at two different potentials, E1=1,1 V i E2 =
1,2 V, was chosen for the deposition. Prepared electrodes were tested by cyclic voltammetry
in 0,1 M KOH solution during one hour. The results showed that covering the gold electrode
with Nafion has a significant influence on electrochemical properties of deposited layers. The
height of registered current peaks as well as their potentials depende on the experimental
conditions. This was explained with different content of various crystallographic forms of
NiOOH obtained at different deposition conditions as well as different charge transfer kinetics
of oxidation/reduction reaction.

• Keywords: superkondenzatori; NiOOH; ciklička voltametrija
• Keywords (english): supercapacitors; NiOOH; cyclic voltammetry
• Language: croatian
• URN:NBN: urn:nbn:hr:149:825174
• Study programme: Title: Applied Chemistry - Undergraduate study; specializations in: Environmental chemistry and green technologies, Advanced materials and technologies, Applied organic chemistry; Course: Environmental chemistry and green 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 resource: Text
• File origin: Born digital
• Access conditions: Open access
• Created on: 2016-12-02 15:34:27