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Figure 1.
(a) XRD patterns and magnified XRD patterns of (b) (108)/(110) peaks, and (c) (003) peak for S-NCM811 and R-NCM811; (d), (e) SEM images for S-NCM811 and R-NCM811.
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Figure 2.
HRTEM images for (a) S-NCM811, and (b) R-NCM811.
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Figure 3.
Electrochemical performance of S-NCM811 and R-NCM811: (a) Charge and discharge curves at 0.1 C. (b) Cycling performance. (c) Rate performance. (d), (e) CV curves at 0.1 mV·s−1. (f), (g) CV curves at different scan rates. (h) Linear fitting curves with various sweep speeds vs peak current. (i) Voltage profiles during in situ EIS measurement. (j), (k) In-situ Nyquist curves and resistance values for S-NCM811 and R-NCM811.
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Figure 4.
(a), (b) XRD Rietveld refinement patterns of S-NCM811 and R-NCM811. (c) Raman spectra of S-NCM811 and R-NCM811. (d) Ni 2p XPS spectra of S-NCM811 and R-NCM811.
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