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Advertising division: IEK-9 - Fundamental Electrochemistry
Reference number: 2019-463

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The Institute of Energy and Climate Research - Fundamental Electrochemistry (IEK-9) focusses on the development of sustainable materials and components for electrochemical energy storage and conversion. The aim is to develop sustainable and cost-effective electrochemical systems with improved energy and power density, longer life time, and maximal safety.

We are looking to recruit a

Postdoc – Modelling (Digital twin development) of large-scale stationary battery energy storage systems

Your Job:

In March 2018 the so-called Living Lab Energy Campus (LLEC) project at Forschungszentrum Jülich (FZJ) was initiated in order to investigate future energy systems on the basis of decentralized and renewable energy. Making extensive use of instrumentation and implementation of data acquisition equipment, control systems, and demonstrator units, LLEC allows real-time analyses, design and optimization of renewable energy systems. Two large-scale battery energy-storage-systems (~2 MWh and ~750 kWh) are part of the demonstrator units, which are used for e.g. peak-shaving, uninterruptable power supply (UPS), and energy buffering. The goal of this subproject is to develop a simulation model (digital twin) of these large-scale battery energy-storage-systems.

In this project the main tasks are:

  • Developing a simulation model for large-scale battery energy-storage-systems based on a holistic approach. This includes electrochemical, thermal, ageing, and electric modelling
  • Optimizing and verifying the model based on the measurements
  • Determining efficiencies and the most efficient operating regimes
  • Collaborating with other FZJ institutes in LLEC to aim for an energy-optimal, cost-efficient and safe operation of the battery storage unit and finally total energy system
  • Writing scientific documents and presenting the results at meetings/conferences

Your Profile:

  • Masters with subsequent doctoral degree in Physics, Electrical-, Mechanical-, or Automotive Engineering
  • Affinity towards modelling and simulation, preferably in connection with electric and electrochemical energy storage systems
  • Familiarity and experience with programming languages, such as MATLAB or Python
  • Experience in optimization and control engineering are valuable
  • Independent and result-oriented way of working
  • Strong ability to work in a team and with intern and extern partners
  • Flexibility and high commitment
  • Good communication skills in spoken and written English
  • Communication skills in spoken and written German is an advantage


Our Offer:

  • Exciting working environment on an attractive research campus with excellent infrastructure, located between the cities of Cologne, Düsseldorf, and Aachen
  • International and interdisciplinary working atmosphere
  • A comprehensive further training programme
  • Flexible working hours and various opportunities to reconcile work and private life
  • A limited position until 31.12.2021
  • Full-time position with the option of slightly reduced working hours
  • Salary and social benefits in conformity with the provisions of the Collective Agreement for the Civil Service (TVöD)


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

We also welcome applications from disabled persons.

Additional Information

The job will be advertised until the position has been successfully filled. You should therefore submit your application as soon as possible. We look forward to receiving your application via our
Online-Recruitment-System!

Questions about the vacancy?
Contact us by mentioning the reference number 2019-463: career@fz-juelich.de
Please note that for technical reasons we cannot accept applications via email.