Increasing the safety of lithium-ion batteries through metal-polymer composite current collectors
3 years (01.08.2021 – 31.07.2024)
Funding: 1.2 Mio € (TUBS)
Total Project Volume: 4 Mio €
Brückner Maschinenbau GmbH & Co. KG
VON ARDENNE GmbH
Fraunhofer Institute for Organic Electronics, Electron Beam and Plasma Technology FEP
TU Braunschweig, Battery LabFactory Braunschweig
Fraunhofer Institute for Surface Engineering and Thin Films IST
Varta Microbattery GmbH
Increasing the energy density of lithium-ion batteries (LIB) is the base for establishing central future topics such as e-mobility or mobile devices with 5G technology, which, however, goes hand in hand with challenges for complying with the safety guidelines of the cells. To improve the safety of lithium-ion batteries, the PolySafe project will develop processes and manufacturing methods for the use of the new technology of metal-polymer current collectors.
Metal-polymer current collectors enable an intrinsic safety function which softens or melts the polymer in the event of an internal short circuit, thereby destroying the electronic conduction path, which ultimately limits the event locally and prevents thermal runaway of the entire cell. Within the framework of the project, methods for the production and processes for integration into the production chain of LIB for the innovative technology of metal-polymer-composite electricity collectors are to be developed, investigated and optimised to the requirements of the application in LIB.