The Helmholtz Institute Münster explores new battery technologies based on innovative electrolytes. As a member of the Helmholtz Association, the institute combines the expertise of the three partners Forschungszentrum Jülich (FZJ), RWTH Aachen and MEET of the University of Münster. The scientists benefit from excellent research infrastructures at the three locations. It enjoys an international reputation in the fields of materials research (Forschungszentrum Jülich, FZJ), lithium (ion) batteries (MEET), and large-format cells and anion-conducting ceramics (RWTH Aachen). Together, the partners are tackling the question of how to store generated electricity cost-effectively, over the long term, in large quantities and in as small a space as possible.