Fig. 4: In situ synchrotron X-ray diffraction (XRD) tracking of phase evolutions during lithiation or sodiation.
From: Identifying critical features of iron phosphate particle for lithium preference
a Lithiation of Platelet-20 nm particles at 0.43 C. b Lithiation of Cuboid-87 nm particles at 0.88 C. c Sodiation of Platelet-20 nm particles at 0.42 C. d Sodiation of Cuboid-87 nm particles at 0.44 C. e Lithiation of Platelet-600 nm particles at 0.092 C. f Lithiation of Platelet-1200 nm particles at 0.077 C. g Sodiation of Platelet-600 nm particles at 0.090 C. h Sodiation of Platelet-1200 nm particles at 0.086 C. i, Snapshots (initial scan and last scan) of in situ synchrotron XRD during sodiation as well as the ex situ synchrotron XRD of the electrodes after ~ 10 h relaxation in the open air for Platelet-1200 nm particles. j, Schematic showing the lattice distortion and relaxation processes with the corresponding XRD peak features.
