Australian researchers at Monash University have developed the most powerful lithium sulfur battery to date. According to Prof. Dr. Ulrich S. Schubert, whose opinion as a battery expert on this new development was sought after, it is in principle possible to increase the energy densities by a factor of three to five compared to conventional batteries.
You can find out more informaation under the following links (German links):
Deutschlandfunk "Forschung aktuell"
Forscher entwickeln Akku für 1.000 Kilometer Reichweite
Südwestrundfunk "SWR Wissen"
Kommt der 1000 Kilometer-Akku?
MDR AKTUELL/MDR Wissen
NACHGEFRAGT: WANN KOMMT DER NEUE SUPER-AKKU?