Researchers at the Institute of Energy and Climate Research (IEK-1) in Germany have developed a material comprising tin oxide nanoparticles enriched with antimony, on a base layer of graphene, that can reportedly triple the capacity of a battery cell and dramatically cut the charging time.
"An important factor is the anode material," said Prof Dina Fattakhova-Rohlfing from the Institute of Energy and Climate Research (IEK-1), who led the research. "In principle, anodes based on tin dioxide can achieve much higher specific capacities, and therefore store more energy, than the carbon anodes currently being used. They have the ability to absorb more lithium ions. Pure tin oxide, however, exhibits very weak cycle stability - the storage capability of the batteries steadily decreases and they can only be recharged a few times. The volume of the anode changes with each charging and discharging cycle, which leads to it crumbling."