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POLiS Junior Research Group Application Program (JuRaGAP)


Early career researchers who work on post-lithium batteries or related topics and who look for a stimulating and excellent environment to pursue their research ideas are invited to apply now for one of two available positions in the POLiS Junior Research Group Application Program (JuRaGAP). The application deadline is May 16 (exclusion date).

PhD Students (f/m/d) Development of filament materials for fused filament fabrication (FFF) 3D printing of all solid-state sodium ion batteries (ASSSIB)

Organizational unit

Institute for Applied Materials - Applied Materials Physics (IAM-AWP)

Job description

Cooperation organizational unit

  • Institute for Applied Materials – Materials Science and Engineering (IAM-WK)

The Cluster of Excellence POLiS (DFG EXC_2154) develops the necessary new battery materials and technology concepts for efficient and sustainable storage of electrical energy.

This position is to be filled within the Cluster of Excellence POLiS and the overall goal of the related project is to develop a 3D printing process as manufacturing technology for post-lithium all-solid-state sodium ion batteries (ASSSIBs) and to evaluate, optimize these processes in battery performance. Exploring various techniques to improve battery-manufacturing processes is of great interest for the research community as well as for the industry, and 3D printing fused filament fabrication (FFF) is a very promising approach in the battery production process to introduce additive manufacturing technology.

The goal of the thesis is to gain understanding in printing material development and thermally post processing, to increase the thickness of the electrode layers without worsening the cell performance in production of sodium ion batteries followed by thermal characterization and safety analysis. This includes the complete process chain of preparing and characterizing of the printing materials, up to the electrochemical investigation of the electrochemical cells and the feasibility for upscaling. The know-how of material production as well as of 3D printing is already available in both institutes.

We offer you the opportunity to complete the promotion within three years. During this time, you will work in an interdisciplinary working group at IAM-AWP and IAM-WK. You will have access to the excellent research infrastructure and experimental facilities at KIT. The work will be conducted also in cooperation with the research group of Physical chemistry of solids – solid-state ionics and electrochemistry at Justus-Liebig university of Giessen. You will also be a member of the graduate school electrochemical energy storage (GS-EES).

Starting date


Personal qualification

  • University degree (Diploma / Master) in materials science, process engineering, mechanical engineering, chemistry or similar qualifications (with excellent score)
  • Knowledge in the field of lithium ion / sodium ion battery (LIB/SIB) or 3D printing by FDM/FFF are required.
  • Practical experience in Electrochemical Impedance Spectroscopy (EIS) and of thermal characterization methods are desired.
  • Practical skills and technical understanding of process steps.
  • Proficiency in English language (C1) and German language (min. B2 level) is obligatory.
  • Excellent ability to cooperate with internal and external project partners.

In parallel please apply for admission to the GS-EES via the GS-EES online application form

Contract duration

limited to 3 years

Application up to

May, 21.2021

Contact person in line-management

For further information, please contact Dr. Mohsin, Phone: 0721 608 23390, Email: or Mrs. Nötzel, Phone: 0721-608 23673, Email:


Please apply online using the button below for this vacancy number 11-2021/IAM-AWP.

Ausschreibungsnummer: 11-2021/IAM-AWP

Recognized severely disabled persons will be preferred if they are equally qualified.


Personnel Support is provided by:
Personalservice (PSE) - Human Resources
Ms Meinel
Phone: +49 721 608-25029,

Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany



Graduate School EES

PhD students doing their research in the framework of POliS take part in the Graduate School Electrochemical Energy Storage.

  • The GS-EES addresses the full, community-spanning spectrum of electrochemical energy storage and conversion, from fundamental science to processing and application
  • The GS-EES offers a comprehensive education and training program in these areas, emphasizing interdisciplinary aspects
  • The GS-EES is committed to offer professional skills training
Studierende Hörsaal Heiko Grandel

POLiS funds about 60 PhD students.

The GS-EES operates within the Center for Electrochemical Energy Storage CELEST.

Research fields are Li-ion batteries, post Li batteries, fuel cells, etc.

Die GS-EES offers:

  • An interdisciplinary block course Materials, Funcitoning and Technology of Batteries
  • An Annual Summer School
  • Topical block courses and workshops on scientific or method-related topics
  • Professional skills training, in the fields of scientific communication, management, good scientific practice and equal opportunities
  • Research abroad for 3 months

Please visit the GS-EES Website for further information

Important Links


Equal opportunities

The members of the Cluster and the board are strongly committed to ensure equal career opportunity irrespective of gender, age, origin, personal background and religion.

Zwei Forschende am Computer Elvira Eberhardt
Forscherin Fritz Beck
Vortrag Daniel Messling
Forscherin Tanja Meißner
Forscherin Elvira Eberhardt

Our aims are:

  • Creating an accepting, inclusive and diverse culture, which fosters inclusion and interculturality within the Cluster
  • Raising awareness of equality and diversity and the impact of unconscious bias through various programs
  • Achieving equal opportunities for women and men at all levels of the Cluster
  • Raising the number of women at all qualification levels and especially in leadership positions
  • Compatibility of family and career

For doing this, we will implement Cluster-specific measures and at the same time make use of established structures and instruments at Ulm University and Karlsruhe Institute of Technology (KIT),  such as personnel development and diversity management units, monitoring of hiring procedures, initiatives for reconciliation of work and family life, and various mentoring and coaching programs.

Proportion of women in POLiS

  • 16,0 % Female Principle Investigators
  • 50,0 % Spokeswomen of Research Units
  • 37,5% Female Representatives of the General Assembly

Nationalities in POLiS

  • 15 different nationalities
  • 27 % researchers from other countries

Important Links



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