|Period:||01.10.2018 – 30.11.2022|
|Project Manager:||Dr. Christian Modrzynski|
The expansion of the use of intermittent energy sources such as wind and sun creates new requirements with regard to the provision of cost-effective stationary storage systems for the excess electricity generated. Due to the independent scalability of storage capacity (tank) and electrical power (cell/stack), redox flow batteries represent a promising option for various applications as energy storage.
The overall goal of the joint project StaTuR, funded by the BMWK, is the conversion of a tubular all-vanadium single cell (VRFB) into a redox flow stack prototype, as well as the expansion to a stand-alone storage system as a demonstrator. The tubular design benefits from cost reduction through extrusion-based component manufacturing and reduced seal length. In addition, the short-circuit currents and pressure losses in the system that occur in the planar arrangement can be reduced. Initial investigations for the development of a tubular redox flow cell were carried out as part of the tubulair± project.
As part of the project, the DFI is working on modifying the test stand for redox flow batteries. In addition to examining the aging of the cell components provided by the project partners for the tubular single cell, the focus is on expanding the test stand for examining the module components and the interaction of the individual cells in the stack. In addition to electrochemical characterizations, various sensory and analytical methods are to be used to investigate the long-term behavior of the system. An additional SOC monitoring (state of charge) is also used to track the state of charge, the crossover and the material discharge.