Synthesis of Monocrystalline Nanoframes of Prussian Blue Analogues by Controlled Preferential Etching

Metal cyanide coordination compounds are recognized as promising candidates for broad applications because of their tailorable and adjustable frameworks. Developing the nanostructure of a coordination compound may be an effective way to enhance the performance of that material in application‐based roles. A controllable preferential etching method is described for synthesis of monocrystalline Prussian blue analogue (PBA) nanoframes, without the use of organic additives. The PBA nanoframes show remarkable rate performance and cycling stability for sodium/lithium ion insertion/extraction. A preferential etching method is reported for the synthesis of monocrystalline nanoframes of a Prussian blue analogue, without use of organic additives. The nanoframes showed remarkable rate performance and cycling stability as a cathode material for alkaline ion batteries.