▎ 摘　　要

NOVELTY - Dual active site Prussian blue-type sodium ion anode materials i.e. potassium-metal-iron-cyanide-reduced graphene oxide complex (I), is new. USE - (I) is useful in the field of battery electrode materials. ADVANTAGE - (I): promotes the two-electron energy storage process, increases the specific capacity, improves the conductivity of the material and improves the rate and cycle performance of the material. DETAILED DESCRIPTION - Dual active site Prussian blue-type sodium ion anode materials i.e. potassium-metal-iron-cyanide-reduced graphene oxide complex of formula (KxMyFez(CN)6-arGO)(I), is new. M = transition metal elements Ni, Co, Mn, Zn; rGO = reduced graphene oxide; x = 0-0.9; y and z = 0-0-2; and a = 0-0.15. An INDEPENDENT CLAIM is included for preparation of (I).