Ni Migration-Induced Strain and Phase Segregation in LiNiO2 Cathodes
Ni Migration-Induced Strain and Phase Segregation in LiNiO2 Cathodes
研究概述
研究内容请参见论文原文。
谱图与表征信息
Figure 3. (a) XANES of pristine and charged (4.4 V) LNO. EXAFS spectra and their fittings of (b) pristine and (c) charged (4.4 V) surfaces in real space. LNO aberration-corrected transmission electron microscopy (AC-TEM) images (along [100] zone axis, scale bar 2 nm), selected area electron diffraction (SAED), and geometrical phase analysis (GPA) patterns for pristine (d−f) and charged (4.4 V) LNO (h−j). The graphs next to the SAED patterns are the high-angle annular dark-field (HAADF) signal profiles of STEM images. The arrows in the signal profile of the charged sample indicate the migration of Ni.