NaNiO2 substituted by Ti4+. Credit score: Siyu An and Torsten Brezesinski / Battery and Electrochemistry Laboratory (BELLA), Institute of Nanotechnology, Karlsruhe Institute of Technology (KIT) Researchers at Songshan Lake Supplies Laboratory have made vital advances in sodium-ion battery (SIB) expertise by bettering biking efficiency of the NaNiO2 cathode. The work has been published within the