fig2

Figure 2. (A-C) XRD patterns of Ni-N-C, Fe-N-C, and Fe/Ni-N-C, (D) Raman spectra, (E-G) fitted curves of Raman spectra, and (H) the ratio of ID/IG of Ni-N-C, Fe-N-C, and Fe/Ni-N-C.
Figure 2. (A-C) XRD patterns of Ni-N-C, Fe-N-C, and Fe/Ni-N-C, (D) Raman spectra, (E-G) fitted curves of Raman spectra, and (H) the ratio of ID/IG of Ni-N-C, Fe-N-C, and Fe/Ni-N-C.
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