PRUSSIAN BLUE POSITIVE ELECTRODE MATERIAL, PREPARATION METHOD THEREFOR, AND ELECTROCHEMICAL ENERGY STORAGE DEVICE

The present disclosure provides a prussian blue analogue positive electrode material, a preparation method therefor and an electrochemical energy storage device. A molecular formula of the prussian blue analogue positive electrode material is AMM′(CN)L.□.(i-HO), where, A is one or more selected from a group consisting of alkali metal cation, alkaline-earth metal cation, Zn and Al; M is a metal with the valence of 2+ or 3+; M′ is a metal with the valence of 2+ or 3+; b-HO is a coordinated water; □ is a M′(CN)cavity; L is a neutral ligand, the neutral ligand is one or more selected from a group consisting of CHCN, NH, CO and CHN; i-HO is an interstitial water; 0