Temperaturna odvisnost polarizacijske krivulje v gorivni celici s protonsko izmenjalno membrano

zaključna naloga Razvojno raziskovalnega programa I. stopnje Strojništvo

Žiga Kreuzer (Author), Mihael Sekavčnik (Mentor)

Abstract

V tej zaključni nalogi iščemo odvisnost polarizacijske krivulje gorivne celice s protonsko izmenjalno membrano (angl. Proton Exchange Membrane Fuel Cell - PEMFC) na spreminjajočo se temperaturo in optimalno temperaturo delovanja nizkotemperaturne PEMFC. Meritve smo v okviru diplomske naloge izvedli na Kemijskem inštitutu v Ljubljani in z njimi analizirali aktivacijo gorivne celice ter gledali odziv polarizacijskih krivulj glede na delovno temperaturo celice. Temperatura ima velik vpliv na maksimalno izhodno napetost in na kvaliteto trifaznega stika. Ugotovili smo, da tako previsoka in prenizka temperatura nista primerni za optimalno delovanje PEMFC. Padec napetosti je bil pri visokih tokovih pri 55 °C in 85 °C okoli 20 % referenčne vrednosti.

Keywords

diplomske naloge;gorivne celice;protonsko izmenjalna membrana;temperaturna odvisnost;polarizacijska krivulja;vodik;čista energija;elektrokemija;

Data

Language:	Slovenian
Year of publishing:	2020
Typology:	2.11 - Undergraduate Thesis
Organization:	UL FS - Faculty of Mechanical Engineering
Publisher:	[Ž. Kreuzer]
UDC:	621.352.6:536.5:544.6(043.2)
COBISS:	28154371
Views:	496
Downloads:	102
Average score:	0 (0 votes)
Metadata:

Other data

Secondary language:	English
Secondary title:	Temperature dependance of the polarization curve of the Proton-Exchange-Membrane fuel cell
Secondary abstract:	In this thesis, we are looking for the temperature dependance of the polarization curve of a PEM fuel cell and the optimal temperature for the most efficient activity of a low temperature PEM fuel cell. The measurements in this thesis were conducted at the Chemistry institute in Ljubljana and have been used to analyze the activation protocol of fuel cells and to find the temperature dependance of the polarization curves. Temperature has a big impact on the highest attainable voltage of a fuel cell, as well as an impact on the quality of electrode kinetics. The results show, that nor too high or too low temperatures result in less optimal performance of PEMFC. The voltage drop in measurements at 55 °C and 85°C reached around 20 % of the reference measurement value.
Secondary keywords:	thesis;fuel cells;proton exchange membrane;temperature dependance;polarization curve;hydrogen;clean energy;electrochemistry;
Type (COBISS):	Final paper
Study programme:	0
Thesis comment:	Univ. v Ljubljani, Fak. za strojništvo
Pages:	XIV, 33 f.
ID:	12025816