Dry, low-cost coating technology for battery electrodes for energy-efficient and environmentally friendly production processes (LoCoTroP)

In the LoCoTroP project, a technology is being developed for coating battery electrodes in a dry process. This will significantly cut production costs without impairing electrochemical performance.

The aim of this project was to develop an innovative, solvent-free and environmentally friendly dry coating process for battery electrodes, whose electrochemical performance is comparable to that of conventionally manufactured ones.

A high-intensity dry mixing process, which was investigated at the Technical University of Braunschweig (iPAT), made it possible to produce specific powder mixtures for both anodes and cathodes.

These laid the foundation for the further development of an innovative, electrostatic-based dry coating process at Fraunhofer IPA. The technology was initially studied on laboratory scale on electrodes coated on one side and subsequently transferred to pilot plant scale for anode production in a further step. A roll-to-roll (R2R) pilot plant developed in-house was optimized and modified for this purpose. In the process, the collector is directly coated with active materials which are then fixed thermo-mechanically onto it without the need for additional transfer steps. The performance of the electrode was verified by HAW Landshut (TZE).  

Project partners

• Landshut University of Applied Sciences, Technology Centre Energy (TZE)
• Technical University of Braunschweig, Institute for Particle Technology (iPAT), part of the “ProZell” competence cluster for battery cell production 

Project duration

01.08.2016 – 31.12.2019

Budget for all sub-projects

1.310.562,00 €

Funding code

03XP0079B
Funded by the Federal Ministry of Education and Research.