fig6

Figure 6. (A) XRD patterns and their local enlarged patterns of both samples before and after 200 and 500 cycles; (B) Raman spectra of graphite anodes relative to both cathodes without cycling and after 500 cycles; (C-E) XPS spectra of both samples after 500 cycles; (F-H) XPS spectra of graphite anodes relative to both samples after 500 cycles. XRD: X-ray diffraction; XPS: X-ray photoelectron spectroscopy.