Due to the growing share of fluctuating renewable sources in the energy supply, energy storage systems are gaining an increasingly large role in decoupling the energy demand from that of energy supply. Redox flow batteries demonstrate several advantages over other technologies: They present an attractive alternative to conventional batteries due to their long lifetime and their flexible scalability of power and capacity. They are suited well for storing electrical energy, especially for decentralized applications such as autonomous and island systems but also for on-grid systems. Vanadium Redox Flow Batteries (VRFB) are characterized by a long lifetime as well as an especially high cyclic stability.
Fraunhofer ISE is working on stack and system development as well as battery management through simulation-based analysis and design. Our present focus lies in the development of Vanadium Redox Flow Batteries, the optimization of materials and cell design. Our aim is to improve the pressure distribution, minimize cross flows and minimize the self-discharge even more.