Graphene/doped ceria nano-blend for catalytic oxygen reduction in non-aqueous lithium-oxygen batteries

摘要: Abstract An important component in lithium–air batteries is the oxygen electrode, which facilitates reduction reaction during discharge process and oxidation of Li 2 O charge process. The performance electrode strongly depends upon activity materials employed. Herein, we report catalytic graphene/zirconium doped ceria (ZDC) nano-blend prepared by mixing graphene, using modified Hummers method followed H reduction, ZDC, chemically prepared. With merely 10% loading ZDC on Li-O cells showed a threefold increase their capacities. well exfoliated layered structure graphene mesoporous facilitated diffusion electrolyte inner to enhance efficiency also offered ample volume for accumulation product. synergistic effect fast kinetics electron transport provided support high electro-catalytic resulted excellent batteries.