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PEM water electrolysis: steady-state, dynamic and degradation models of a cell, supported by EIS analysis

Robino, Matteo (2016) PEM water electrolysis: steady-state, dynamic and degradation models of a cell, supported by EIS analysis. Master's, POLITECNICO DI TORINO.

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Abstract

PEM water electrolysis (PEMWE) cells are a promising solution for the production of hydrogen in the nearly future. These low temperature cells are able to work in a wide and variable range of current density, they are characterized by a fast response which make them the ideal candidate for being coupled with renewable energy systems, such as wind turbines and photovoltaics, whose electrical energy production is usually variable in time and unpredictable. In addition, degradation phenomena affect the cells during their operational life, leading to changes in their performance. From these peculiarities derives the need of models that can predict the behaviour of the PEMWE cells in the different conditions they are subjected to, taking into account also their losses in performance. Three different models have been developed for describing respectively the steady-state and dynamic conditions, and the degradation of the cell in time, which are easily coupled with the Electrochemical Impedance Spectroscopy (EIS) analysis results and the Electrochemical Equivalent Circuit (EEC) chosen. The steady-state polarization curve model has been experimentally validated, while no experimental tests have been done yet in order to validate the dynamic and the degradation models proposed.

Item URL in elib:https://elib.dlr.de/107912/
Document Type:Thesis (Master's)
Additional Information:Betreuer: Philipp Lettenmeier
Title:PEM water electrolysis: steady-state, dynamic and degradation models of a cell, supported by EIS analysis
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Robino, MatteoDLRUNSPECIFIED
Date:2016
Refereed publication:No
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Number of Pages:87
Status:Published
Keywords:PEM-Electrolysis, Degradation, Simulation
Institution:POLITECNICO DI TORINO
Department:I FACOLTÀ DI INGEGNERIA
HGF - Research field:Energy
HGF - Program:Storage and Cross-linked Infrastructures
HGF - Program Themes:Electrolysis and Hydrogen
DLR - Research area:Energy
DLR - Program:E EV - Energy process technology
DLR - Research theme (Project):E - Electrochemical Processes (Electrolysis) (old)
Location: Stuttgart
Institutes and Institutions:Institute of Engineering Thermodynamics > Electrochemical Energy Technology
Deposited By: Lettenmeier, Philipp
Deposited On:16 Nov 2016 11:27
Last Modified:16 Nov 2016 11:27

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