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Archiv-Übersicht     Angebot Nr. 14209

Angebotsdatum: 31. März 2021
Art der Stelle: Doktorarbeit
Fachgebiet: Chemie > Angewandte Makromolekulare Chemie
Titel des Themas: PhD Position – Degradation Study of SOC Stacks with the Support of Electrochemical Impedance Spectroscopy (EIS) and Modelling

Institut: Forschungszentrum Jülich GmbH
Frau Hartmann
52428 Jülich bei Köln
Tel.:    Fax.:
Homepage: http://www.fz-juelich.de/SharedDocs/Stellenangebote/_common/dna/2021D-041-EN-IEK-14.html?nn=718260
E-Mail Kontakt: mail

Beschreibung: Conducting research for a changing society: This is what drives us at Forschungs­zentrum Jülich. As a member of the Helmholtz Association, we aim to tackle the grand societal challenges of our time and conduct research into the possibilities of a digitized society, a climate-friendly energy system, and a resource-efficient economy. Work together with around 6,400 employees in one of Europe’s biggest research centres and help us to shape change!

In order to limit global warming caused by greenhouse gas emissions, energy transition is a necessary and challenging task for our society. The transition to a sustainable energy system requires the deployment of new, efficient technologies for the conversion of greenhouse-gas-free secondary energy carriers produced from renewable energy sources. At the Institute of Energy and Climate Research – Electrochemical Process Engineering (IEK-14), we are at the forefront of these efforts. Solid oxide cell (SOC) technology will play an essential role in the energy transition, in view of its high efficiency and ability of energy conversion (from chemical to electrical, and vice versa). To achieve the high efficiency and long stability, understandings of the mechanisms relating to power losses in stacks and degradation phenomena are necessary for further material development and improvement in stack design. Electrochemical impedance spectroscopy (EIS) is an important technique in electrochemistry. Compared to conventional DC technique, EIS provides the possibility of separating the different processes taking place at the different interfaces in the electrochemical devices, especially with support of the so-called DRT technique (analysis of Distribution of Relaxation Times).

We are offering a
PhD Position – Degradation Study of SOC Stacks with the Support of Electrochemical Impedance Spectroscopy (EIS) and Modelling

Your Job:
In this work, the degradation behaviour and mechanisms of different designs of SOC stacks under different operating modes (i.e., fuel cell, steam electrolysis, co-electrolysis and reversible operation) and different operating parameters (e.g. current density, voltage, fuel utilization, conversion rate, temperature, gas composition, impurities, etc.) is studied systematically with possible optimization of the available EIS measuring technique and DRT analyzing methods. Based on the experimental results and post-test analysis, a model of the SOC cell (with single repeating unit) including electrochemical reaction in porous media should be established and validated using OpenFOAM and/or MATLAB to simulate the degradation phenomenon.

Your tasks in detail:
- Optimization of the available EIS instrument and measurement techniques (10%)
- Systematic study of the degradation behaviour of SOC stacks under different conditions (50%)
- Developing and validating a model for a single repeating unit of SOC stack using OpenFOAM and/or MATLAB (40%)

Your Profile:
- Master’s degree in electrochemistry, process engineering
- Experience on SOC and EIS is preferred
- Experience on OpenFOAM is preferred
- Computer skills: MS Office, Origin, MATLAB
Flexible, self-motivated and goal-oriented
- Fluent in English

Our Offer:
We work on the very latest issues that impact our society and are offering you the chance to actively help in shaping the change! We offer ideal conditions for you to complete your doctoral degree:

- A large research campus with green spaces, offering the best possible means for networking with colleagues and pursuing sports alongside work
- Ideal conditions for balancing work and private life, as well as a family-friendly corporate policy
- A structured doctoral degree programme for you and your supervisors with a comprehensive training courses and individual opportunities for your personal and professional further development
- Special support for international employees, e.g. through our International Advisory Service
- Extensive company health management

The position is initially for a fixed term of 3 years. Pay is above average in line with 75% of pay group 13 of the Collective Agreement for the Public Service (TVöD-Bund) and additionally 60% of a monthly salary as special payment (“Christmas bonus”).

Further information on doctoral degrees at Forschungszentrum Jülich including our other locations is available at www.fz-juelich.de/gp/Careers_Docs. Please also check our doctoral researchers’ platform JuDocs.

Forschungszentrum Jülich promotes equal opportunities and diversity in its employment relations.

We also welcome applications from disabled persons.

We look forward to receiving your application until 21.04.2021 via our Online Recruitment System:

Questions about the vacancy?

Get in touch with us by using our contact form:

Please note that for technical reasons we cannot accept applications via email.

Anfangsdatum: 31. März 2021
Geschätzte Dauer: 3 years