Compositional gradient design and microstructural engineering enable ultra-stable quinary Ni-rich cathodes in high-voltage pouch cells
Compositional gradient design and microstructural engineering enable ultra-stable quinary Ni-rich cathodes in high-voltage pouch cells
研究概述
研究内容请参见论文原文。
谱图与表征信息
Fig. 5 Post-modern evaluations and schematic diagram of stability improvement mechanism. (a) TOF-SIMS 3D sputtering images of POF2−, C2HO−, NiF3−, and MnF3− fragments, (b) statistical results of C 1s, F 1s, and O 1s XPS spectra, (c) TMs contents deposited on Li anode, and (d, e) HRTEM, local magnified graphs (I, II, III) with the corresponding FFT images after 100 cycles for g-NCMAB and NCMAB. (f) XANES spectra, (g) k3-weighted FT-EXAFS, and (h) corresponding WT-EXAFS recorded at Ni K-edge before and after 100 cycles for g- NCMAB and NCMAB. (i) Schematic diagram of stability improvement mechanism.