▎ 摘　　要

NOVELTY - Iron-based solid-state energy storage device comprises redox cement-based electrolytes and reduced graphene oxide/ferric oxide electrodes. The reduced graphene oxide/ferric oxide electrode is made up of nickel foam, reduced graphene oxide and ferric oxide. The redox cement-based electrolyte is a cement-based complex material comprising polyacrylic acid, potassium hydroxide, potassium ferricyanide and cement. The redox cement-based electrolyte is located between two reduced graphene oxide/ferric oxide electrodes. USE - The Iron-based solid-state energy storage device is useful in building energy storage and electrochemical technical field and large scale building. ADVANTAGE - The iron-based solid-state energy storage device has wide voltage window and high electrochemical performance. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a preparing the iron-based solid energy storage device. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic structural view of an iron-based solid-state energy storage device (Drawing includes non-English language text).