Fig. 4: Catalytic process study through in-situ spectrum.
From: Janus effect of FeCo dual atom catalyst with Co as active center in acidic oxygen reduction reaction
a Schematic of the in-situ spectra setup and the inner information in the catalytic process. In-situ ATR-SEIRAS spectra on b T-FeCo-N-C and c R-FeCo-N-C. the above in-situ spectra were obtained at various potentials during ORR catalysis in O2-saturated 0.5 M H2SO4. d Fe K-edge and h Co K-edge XANES spectra of T-FeCo-N-C. e–g Fe K-edge EXAFS spectra and i–k Co K-edge EXAFS spectra of T-FeCo-N-C (the change of bond length and intensity shown in the shadow area).
