Electrochemical Energy Storage

A department in the field of energy

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Electrical energy storage and sector coupling technologies are the key to a successful energy transition. Fraunhofer UMSICHT develops electrochemical energy storage for the demand-oriented provision of electricity as well as concepts to couple the energy and production sectors.

Battery Development

The development and production of bipolar flow and non-flow battery storage devices are the core of our research. In addition to battery systems and stack design, we also develop optimized materials (electrodes, bipolar plates, and membranes). In addition, we have extensive testing facilities for various battery types.


In addition to increasing the share of renewable energies in the electricity sector, reducing fossil raw materials in other sectors of the economy is also a declared goal of the energy transition. In light of this, concepts and production methods are currently being discussed that can use green electricity as a cheap resource for the producing industry. This approach of power-to-x production will have an impact on existing economic structures. We develop techno-economic evaluation methodologies for power-to-x technologies and thus answer systemic questions arising from the coupling of the energy and production sectors.

Component Development and Fabrication

We develop materials and components for bipolar flow and non-flow batteries as well as fuel cells. Our portfolio includes the design of electrochemical reactors, the system development of redox flow battery and the development of optimized materials such as electrodes, bipolar plates and membranes.

Information material of the department Electrochemical Energy Storage


Redox flow batteries: A step toward the mass market

Researchers at Fraunhofer UMSICHT have completely redesigned the heart of a redox flow battery — the stack — and have brought about a massive reduction in material usage and costs. Their efforts have earned them the Joseph von Fraunhofer Prize.

Reference projects of the department Electrochemical Energy Storage



Mass production of graphite bipolar plates

The project researches the development of continuous production of bipolar plates using roll-to-roll processes. Within the scope of the project, the world's largest bipolar plate has already been developed and produced.



New fully welded
bipolar battery

Space-saving, scalable and seal-free: Innovative, fully welded polymer-based bipolar battery for mobile and stationary applications increases energy density, avoids the risk of fire, and is cost-effective to manufacture.



Hybrid compensation system in the
distribution network

Development and implementation of a hybrid compensation system and its testing in the distribution network. Various system services in medium-voltage networks are provided with a single system.



Metallic residues for
energy storage

Industrial vanadium-containing residues are processed into a quality-assured vanadium electrolyte. These are then available to operate efficient energy storage systems.



Iron-air battery as stationary energy storage

Within the framework of ELuStat, an iron-air battery stack is created as a stationary energy storage system. It will compensate the fluctuating power generation by photovoltaic or wind energy plants and at the same time contribute to the reduction of CO2.