Prussian?blue materials: Revealing new opportunities for rechargeable batteries

The demand to increase energy density of rechargeable batteries for portable electronic devices and electric vehicles reduce the cost grid-scale storage necessitates exploration new chemistries electrode materials batteries. open framework-structure Prussian-blue has recently been demonstrated as a promising cathode host variety monovalent multivalent cations with tunable working voltage discharge capacities. Recent progress toward application is reviewed, special emphasis on charge-storage mechanisms different insertion species, factors influencing electrochemical performances, possible approaches overcome their intrinsic limitations.