fig6

From: Full concentration gradient Li-rich layered oxides cathode materials via kinetic regulation of heterogeneous nucleation growth

Figure 6. Local structural evolution of LR-113 and LR-FCG during electrochemical cycling. (A-C) X-ray absorption near-edge structure (XANES) spectra at the Mn, Co, and Ni K-edges of LR-113 and LR-FCG at the open-circuit voltage (OCV), fully charged state (C-4.8 V), and discharged state (d-2.0 V); (D-F) Fourier-transformed (FT) Mn, Co, and Ni K-edge EXAFS spectra of LR-113 and LR-FCG at OCV, fully charged, and discharged states; (G-I) Fitted bond distances and Debye-Waller factors of Mn-O, Co-O, and Ni-O coordination shells for LR-113 and LR-FCG at different electrochemical states. The error bars represent the fitting uncertainty (estimated standard deviation) of the EXAFS refinement. LR-FCG: Li-rich layered oxide; EXAFS: extended X-ray absorption fine structure.