RESEARCH / A0123
Surface to Bulk Synergetic Modulation of Nickel-Rich LiNi
Read the original paper · 10.1002/aenm.202401123 ↗
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 1. Surface to bulk synergetic modulation of Ni-rich cathode materials with phytic acid. a) Schematic illustration for the synthesis of surfacemodified PA-NCM with a hierarchical surface structure, including an amorphous Li3PO4/Li4P2O7 outmost layer (I), a self-reconstructed NiO subsurface layer (II), and a gradient P doping in NCM bulk (III). b) Enlarged view of (006/102, 018/110) and (003) diffraction peaks of P-NCM, 0.5PA-NCM, PA- NCM, and 2PA-NCM. c) SEM images of P-NCM, 0.5PA-NCM, PA-NCM, and 2PA-NCM. d) 31P ssNMR of PA-NCM sample. e) XPS spectra of P-NCM and PA-NCM samples: P 2p, O 1s, and Ni 2p. f) XANES spectra of Ni K-edge of P-NCM and PA-NCM.