Empa, UNIGE team develop prototype solid-state sodium battery; focus on improving the solid-solid interface
Green Car Congress
NOVEMBER 24, 2017
Researchers at Empa and the University of Geneva (UNIGE) have developed a prototype of a novel solid-state sodium battery with the potential to store extra energy and with improved safety. With a NaCrO 2 cathode, closo-borate solid electrolyte and metallic sodium anode, the cell demonstrated reversible and stable cycling with a capacity of 85 mAh g -1 at C/20 and 80 mAh g -1 at C/5 with more than 90% capacity retention after 20 cycles at C/20 and 85% after 250 cycles at C/5.