Fig. 2: Optical and physicochemical properties of Fe-DTPA and Ce-DTPA electrolytes.
From: Universal complexing agent enabling advanced iron-cerium redox flow batteries
a UV-vis absorption spectra and (b) absorbance-concentration plot at 258 nm of Fe-DTPA solutions diluted 1000-fold. c Digital photos of Fe-DTPA solutions with different concentrations. d UV-vis absorption spectra and (e) absorbance-concentration plot at 297 nm of Ce-DTPA solutions diluted 1000-fold. f Digital photos of different Ce-DTPA concentrations. g Viscosity and ionic conductivity of Fe-DTPA and Ce-DTPA at various concentrations. h Digital photos of Fe–Ce DTPA RFB penetration tests. Source data are provided as a Source Data file.
