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. 2023 Aug 25;5(10):2594–2603. doi: 10.1021/acsmaterialslett.3c00485

Figure 5.

Figure 5

XPS analysis of NCM811 electrodes with PVDF, PVDF-CTFE, and PVDF-CTFE-g-PEGA-co-PAA binders before and after 250 cycles: (a-c) C 1s spectra and d-f) F 1s spectra; g) Normalized quantitative analysis of the different carbon-containing surface species calculated from C 1s spectra fitting; h) Normalized quantitative analysis of the different fluorine-containing surface species calculated from F 1s spectra fitting; (i) Ni 2p spectra of NCM811 cathodes after 250 cycles with PVDF (black), PVDF-CTFE (red), and PVDF-CTFE-g-PEGA-co-PAA (blue) binders.