Alkaline-based aqueous sodium-ion batteries for large-scale energy storage

Abstract Aqueous sodium-ion batteries are practically promising for large-scale energy storage, however energy density and lifespan are limited by water decomposition. Current methods to boost water stability include, expensive fluorine-containing salts to create a solid electrolyte interface and addition of potentially-flammable co-solvents to the electrolyte to reduce water activity. However, these methods significantly increase costs and safety risks. Shifting electrolytes from near neutrality to alkalinity can suppress hydrogen evolution while also initiating oxygen evolution and cathode dissolution. Here, we present an alkaline-type aqueous sodium-ion batteries with Mn-based Prussian blue analogue cathode…

• AN
  Australian Nuclear Science and Technology Organisation
• NC
  National Computational Infrastructure
• AG
  Australian Government
• AS
  Australian Synchrotron
• UO
  University of Adelaide
• NC
  National Cancer Institute