fig4

Figure 4. EIS and fitting curves of the half-cells with four electrolytes at different tested conditions, including (A) pristine state, (B) after 3 cycles at 1 C, (C) after 300 cycles at 1 C, and (D) after 600 cycles at 10 C; XPS high-resolution spectra of (E) F 1s and (F) C 1s of the NFM@CTA-4 cathode cycled in PE1VC for 3 cycles at 1 C.