Economical energy storage for the electric car of tomorrow

It is exactly this fact the Saxon Fraunhofer

a

engineers want to change: "Our dry transfer coating process aims to noticeably reduce the process costs in electrode coating," emphasizes IWS project manager Dr. Benjamin Schumm. "Manufacturers can eliminate toxic and expensive solvents and save energy costs during drying. In addition, our technology also facilitates the use of electrode materials that are difficult or even impossible to process wet-chemically."

But these materials are needed for future batteries with higher energy density. "For all these reasons, we think that our technology can help to achieve internationally competitive battery cell production in Germany and Europe."

Pilot plant successfully started in Finland

This potential is also seen by Fraunhofer's Nordic partners: The Finnish battery company "BroadBit Batteries," together with IWS, has commissioned a pilot plant in its Espoo factory, which coats electrodes with dry electrode material instead of wet pastes, as has been common in industry up to now. BroadBit uses it to produce new types of sodium ion batteries. "The demand for our technology is high, even in Germany," reports Benjamin Schumm.

On a laboratory scale, the IWS can already coat electrode foil with a remarkable production speed of several meters per minute. In this respect the Dresden engineers can show the potential for transferring the technology to the production scale.

https://phys.org/news/2019-06-economical-energy-storage-electric-car.html