Solvent-free mechanochemical synthesis of Na-rich Prussian white cathodes for high-performance Na-ion batteries

Prussian blue analogs (PBAs) with rigid open framework are promising low-cost and easily prepared cathodes for Na-ion batteries. However, their electrochemical performances are hindered from the crystal vacancies and interstitial water in a traditional aqueous co-precipitation process. Herein, we explore a solvent-free mechanochemical protocol to prepare a monoclinic Na1.94Mn[Fe0.99(CN)6]0.95·□0.05·1.92H2O via regulating the crystal water in...