diplomsko delo
Deja Razpet (Author), Miran Gaberšček (Mentor)

Abstract

Potreba po učinkovitih, trajnostnih in cenovno dostopnih katalizatorjih za reakcijo razvoja vodika (HER) se je v zadnjih letih skupaj s povečanim zanimanjem za obnovljive energetske vire močno povečala. Katalizatorji na osnovi niklja so se izkazali za eno izmed obetavnejših alternativ za katalizatorje na osnovi platine in drugih dragocenih kovin, zaradi ugodnih elektrokemijskih lastnosti in cenovne dostopnosti, potrebne pa so še številne izboljšave na področjih njihove aktivnosti in stabilnosti. V tem delu smo želeli raziskati vpliv dodatkov železa v alkalni raztopini na aktivnost in stabilnost nikljevih katalizatorjev pri reakciji razvoja vodika. Uporabili smo metodo plinsko difuzne elektrode, ki obratuje pri pogojih, ki so zelo blizu pogojem v industrijskih elektrolizerjih in gorivnih celicah. Vzorce smo karakterizirali z elektrokemijskimi metodami, ki so vključevale voltametrijo pri linearnem preletu (LSV), kronopotenciometrijo (CP) in elektrokemijsko impedančno spektroskopijo (EIS). Diplomsko delo nakazuje na eno izmed možnih nadaljnjih smeri razvoja nikljevih katalizatorjev za razvoj učinkovitih in trajnostnih tehnologij za proizvodnjo vodika.

Keywords

reakcija razvoja vodika;železo;elektrokatalizator;vodni elektrolizerji;plinsko difuzna elektroda;diplomska dela;

Data

Language: Slovenian
Year of publishing:
Typology: 2.11 - Undergraduate Thesis
Organization: UL FKKT - Faculty of Chemistry and Chemical Technology
Publisher: [D. Razpet]
UDC: 66.087.097(043.2)
COBISS: 202194179 Link will open in a new window
Views: 77
Downloads: 10
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Other data

Secondary language: English
Secondary title: Activity of nickel catalysts for the hydrogen evolution reaction in alkaline electrolyte
Secondary abstract: The need for efficient, sustainable, and cost-effective catalysts for the hydrogen evolution reaction (HER) has significantly increased in recent years, alongside the growing interest in renewable energy sources. Nickel-based catalysts have emerged as one of the most promising alternatives to platinum and other precious metal catalysts, owing to their favourable electrochemical properties and affordability. However, further improvements in their activity and stability are still necessary. In this study, we aimed to investigate the influence of iron additives in alkaline solutions on the activity and stability of nickel catalysts in the hydrogen evolution reaction. We employed the gas diffusion electrode method, operating under conditions closely resembling those in industrial electrolysers and fuel cells. The samples were characterized using electrochemical methods, including linear sweep voltammetry (LSV), chronoamperometry (CP), and electrochemical impedance spectroscopy (EIS). This work suggests one of the possible directions for the development of nickel catalysts and thereby contributes to the advancement of efficient and sustainable hydrogen production technologies.
Secondary keywords: hydrogen evolution reaction;nickel;iron;electrocatalyst;gas diffusion electrode;Vodik;Katalizatorji;Nikelj;Elektroliza;Univerzitetna in visokošolska dela;
Type (COBISS): Bachelor thesis/paper
Study programme: 1000372
Embargo end date (OpenAIRE): 1970-01-01
Thesis comment: Univ. v Ljubljani, Fak. za kemijo in kemijsko tehnologijo, UNI Kemijsko inženirstvo
Pages: 1 spletni vir (1 datoteka PDF (32 str.))
ID: 24473645