RESEARCH / A0022
Interfacial Engineering of CoFe/CoCₓ Heterojunctions into Robust N-Doped Carbon Nanofibers Enables Exceptional Stability for Practical Rechargeable Zinc-Air
Source figures may contain other techniques and soft X-ray spectra. C, N and O measurements are outside our current hard-XAFS testing range.
Fig. 3 Normalized K-edge XANES of (a) Fe-CoFe/CoCx@NC-900 and (b) Co-CoFe/CoCx@NC-900. K-edge FT-EXAFS in R- space of (c) Fe-CoFe/CoCx@NC-900 and d) Co-CoFe/CoCx@NC-900, alongside their respective metal foils, oxides, and phthalocyanine (MPc) counterparts as benchmarks. (e) Fitting curves of the EXAFS of Co-CoFe/CoCx@NC-900 in R-space (inset: matching curve within the q-space domain). (f) EXAFS in k space for the Co-CoFe/CoCx@NC-900 catalyst. (g,h) EXAFS wavelet transforms of Co/Fe-CoFe/CoCx@NC-900 catalyst with its corresponding reference samples.