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Prof. Dr. Maximilian Fichtner


Helmholtz Institute Ulm (HIU)

Helmholtzstr. 11
89081 Ulm
Phone: +49 731 50-34201
Fax:     +49 731 50-34299

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Dr. Christian Punckt

Cluster Manager

Institute of Nanotechnology (INT)

Hermann-von-Helmholtz-Platz 1
76344 Eggenstein-Leopoldshafen
Phone: +49 721 608-28493

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Energy Storage beyond Lithium

The integration of fluctuating renewable energy sources into the future energy economy and the establishment of electromobility requires new materials and technology concepts for powerful and sustainable electrical energy storage.

Within the POLiS (Post Lithium Storage) Cluster of Excellence, scientists from Karlsruhe and Ulm are researching future batteries, which should be powerful, reliable, sustainable and environmentally friendly. The overall objective of our Cluster is to build a fundamental understanding of a new generation of electrochemical energy storage systems and develop a platform for future stationary and mobile applications.

In order to overcome current limitations of lithium-ion battery technology, including uncertainties regarding sustainable materials supply, researchers have identified alternatives that no longer rely on Lithium. Specifically, POLiS is targeting sustainable systems based on, e.g., sodium-, magnesium-, or aluminium-ions. Such systems are called “post-Li” batteries and have the potential to store more energy, be safer, and provide a less costly, long-term option for mass applications such as stationary and mobile electrochemical storage.

With this concept, the Karlsruhe Institute of Technology (KIT), Ulm University, the Centre for Solar Energy and Hydrogen Research Baden-Württemberg (ZSW) and the University of Gießen have asserted themselves in the highly competitive Excellence Strategy of the Federal Government and the State Governments - as the only German Cluster of Excellence for battery research.

POLiS is embedded in the research platform CELEST (Center for Electrochemical Energy Storage Ulm & Karlsruhe). CELEST was founded in 2018 by the partners KIT, Ulm University and ZSW for strategic cooperation and is one of the largest battery research activities in the world.



Bundesministerin Anja Karliczek am HIU
Federal Minister Anja Karliczek visited Ulm


The Federal Minister of Education and Research, Anja Karliczek, visited Ulm on Monday, 15th July 2019 and got an idea of the battery research at the location. She emphasized the further expansion of Ulm's broad expertise in production research and future battery concepts.

SWU Management Visit
Management of SWU informs itself about POLiS


The POLiS Spokesperson, Maximilian Fichtner, received Klaus Eder, Managing Director of the public utility SWU, and André Dillmann, Managing Director of SWU Traffic, to present the latest research activities of the cluster.

Consul General Ymkers visited HIU


The Consul General of the Netherlands, Paul Ymkers, informed himself about innovative Cluster of Excellence at the HIU and talked to the Board of Directors about possibilities of cooperation.

Opening of CELEST and POLiS
Festive launch of 'excellent' energy research


Germany's largest electrochemical energy research platform CELEST and the Cluster of Excellence POLiS were officially launched today, Tuesday, 26 March: State Secretary of the Federal Ministry of Education and Research (BMBF),Christian Luft and head of the Ministry of Science, Research and the Arts Baden-Württemberg, Ulrich Steinbach, attended the inauguration ceremony at the Helmholtz Institute Ulm.

1st General Assembly in Ulm
First General Assembly


POLiS members met at the Helmholtz Institute Ulm today to set the course for a fast and successful start of the research work.

Success within the Excellence Strategy


Ulm University, Karlsruhe Institute of Technology (KIT), the Centre for Solar Energy and Hydrogen Research Baden-Württemberg (ZSW) and the University of Gießen have successfully acquired the Cluster of Excellence POLiS within the Excellence Strategy of the Federal Government and the State Governments.



Deutsche Forschungsgemeinschaft