Fig. 4: Investigation of phase transitions of Na1.73Fe[Fe(CN)6]·3.8H2O sample with rhombohedral structure during cycling.
From: Reversible structural evolution of sodium-rich rhombohedral Prussian blue for sodium-ion batteries
![Fig. 4: Investigation of phase transitions of Na1.73Fe[Fe(CN)6]·3.8H2O sample with rhombohedral structure during cycling.](http://media.springernature.com/full/springer-static/image/art%3A10.1038%2Fs41467-020-14444-4/MediaObjects/41467_2020_14444_Fig4_HTML.png?as=webp)
a 2D contour plot of (012) reflection plane, b normalized volume during charge–discharge process obtained from synchrotron in situ PXRD patterns of rhombohedral PB-S3, c (012), (110)/(104), and (024) reflection planes of synchrotron in situ PXRD patterns, d schematic three-phase evolutions during cycling of rhombohedral PB-S3.
