Article

Saarland University researchers have created lithium-ion batteries using hollow carbon spheres filled with iron oxide, a more eco-friendly alternative to conventional batteries. The carbon spherogels, developed at the University of Salzburg, provide high electrochemical capacity.

Iron's abundance and recyclability make it an ideal choice. The initial findings show that storage capacity increases with usage due to a slow activation process. Further research is needed to improve activation speed and develop a complementary cathode. The initiative is part of the €23 million 'EnFoSaar' project, funded by the Saarland government, focusing on sustainable energy solutions and resource-efficient recycling methods.