We modeled the EXAFS data with and without In or Sn shells and with or without multiple-scattering (MS) shells, the latter providing information on the level of crystallinity. For the intermetallic Cu-In and Cu-Sn samples, this resulted in 13 f it models each. A subsequent meta-analysis of R-values, first-shell distances, and populations, and Cu/In or Cu/Sn ratios disclosed the superior models, which are presented here. ), which is due to the presence of In or Sn atoms within the Cu-phase; (2) oxidations states of Cu are close to zero (a quantif ication was attempted but is largely excluded due to the lack of proper references, see Table for details); and (3) there are only minor responses against applied potentials, which may include the reduction of low amounts of (surface) oxidic species. To the contrary, pronounced changes are obtained for the In-and Sn-XANES. Notably, In-XANES of the Cu-In samples can indeed be well approximated as a linear combination of In-f oil and In2O3, and the as-prepared samples basically resemble In2O3 (Figures and), suggesting not only strong oxidic contributions, but in addition the f ormation of a separate In-phase. After application of reducing potentials, the spectra indicate significant reduction and get very close to the In-f oil spectra. Linear combination techniques indicate almost 100% In2O3 content for Cu85In15 (Cu-rich) as-prepared samples and a ratio of about 85:15 (In 2+ : In 0 ) f or Cu25In75 (Cu-poor) as-prepared samples (Table ). To the contrary, as-prepared Sn-spectra of Cu-Sn samples can only be modeled by superposition of Sn-foil, and SnO2 (instead of SnO, Figure and Table ), with ratios of about 36:64 (Sn:SnO2) f or as-prepared Cu40Sn60 samples and 49:50 f or as-prepared Cu85Sn15 samples, hinting towards an average oxidation state around 2 f or Sn. Whereas little to no response to applied potentials was observed f or the Sn-edge in Cu85Sn15 (Figure ), the oxide-to-foil-trend obtained for the Sn-spectra is also visible for the Cu-poor case (Cu40Sn60, Figure ), which again suggests that most of the Sn atoms are incorporated into the Cu-phase f or the Cu-rich case (Cu85Sn15), but a separate Sn(Ox)-phase might have formed f or the Cu-poor case (Cu40Sn60).