RESEARCH / A0467
Stabilizing Interlayer Repulsion in Layered Sodium-Ion Oxide Cathodes via Hierarchical Layer Modification
Read the original paper · 10.1002/adma.202407519 ↗
Source figures may contain other techniques and soft X-ray spectra. C, N and O measurements are outside our current hard-XAFS testing range.
Figure 5. Theoretical calculations of ion migration mechanisms and XAFS characterizations of Na0.61Ca0.05[Li0.1Ni0.23Mn0.67]O1.95F0.05. a) The migration energy barrier of Na+ and Ca2+ in the Na layer. b) Schematic of the migration pathway of Li+ from initial to intermediate and final sites. c) Li+ relative site energies of intermediate and final sites calculated along the paths A. d) Li+ relative site energies of intermediate sites calculated along the paths B. e) Ni K-edge and f) Mn K-edge XAFS spectra of Na0.61Ca0.05[Li0.1Ni0.23Mn0.67]O1.95F0.05 electrodes at different states of charge.