The vast majority of e-car batteries are currently still being manufactured in Asia. But European industry is also changing tremendously: Despite the common objections that Asian battery manufacturers have a (too?) Powerful technological lead and can produce more cheaply than their European competitors, the production of battery cells for electric cars is increasingly seen as a key industry.
Together with "motorists" and supported by politics, researchers like Dr. Hofmann to pull up cell production in Europe. The central question of your research is: What can the construction of battery-producing machines look like in the future?
Car manufacturers often refer to the battery as the most important part of an electric vehicle: not the engine or the chassis. So you shouldn't make yourself too dependent on the big manufacturers from China or South Korea when it comes to battery cells.