Optimizacija procesa mokrega mletja ogljičnega nosilca katalizatorja za uporabo v gorivnih celicah

Vovk, Natan (author), Genorio, Boštjan (mentor)

Izvedena je optimizacija mokrega krogljičnega mletja v planetarnem mlinu nosilca elektrokatalizatorja na osnovi reduciranega grafen oksida in bakra za uporabo v gorivni celici s protonsko prevodno membrano (angl. proton exchange membrane fuel cell - PEMFC). Optimizacija je potekala v dveh stopnjah in sicer, optimizacija parametrov, in izbira topila za proces mokrega mletja. Vzorce, pridobljene tekom te optimizacije, sem analiziral z vrstičnim elektronskim mikroskopom (angl. scanning electron microcope – SEM) in rentgenskim difraktometrom XRD. Glede na rezultate poskusov sem ugotovil, da podaljšanje časa mletja nad eno uro nima opaznega vpliva na kvaliteto mletja. Povišanje obratov na minuto (angl. rotations per minute – RPM) iz 300 na 600 ima na mletje pozitiven vpliv le, če se hkrati poveča čas mirovanja med mletji. Kot najboljše topilo za procesi se je izkazal heksan.

• Language: Slovenian
• Keywords: mletje, ogljikov kompozit, reduciran grafen oksid, katalizator, PEMFC
• Work type: Bachelor thesis/paper
• Typology: 2.11 - Undergraduate Thesis
• Organization: FKKT - Faculty of Chemistry and Chemical Technology
• Year: 2023
• PID: 20.500.12556/RUL-150764
• COBISS.SI-ID: 172417795
• Publication date in RUL: 22.09.2023

Secondary language

• Language: English
• Title: Optimization of wet milling process of carbon catalyst carriers for use in fuel cells

Abstract

An optimisation of the wet planetary ball milling process for the reduced graphene oxide and copper based electrocatalyst support for proton exchange membrane fuel cells was performed. The optimization was performed in two steps, parameter optimization and solvent selection. The obtained samples were analysed using a scanning electrone microscope (SEM) and X-ray difraction (XRD). It was concluded that extending the milling time over one hour has no significant impact on the quality of the milling process. Increasing rotations per minute (RPM) from 300 to 600 only has a positive impact on the milling process, if cool down time is increaed as well. The best solvent for the milling process proved to be hexane.

• Keywords: milling, carbon composite, reduced graphene oxide, catalyst, PEMFC