Fig. 8: Promotional effects of Fe3+ on the OER activity of LiNiO2. | Nature Communications

Fig. 8: Promotional effects of Fe3+ on the OER activity of LiNiO2.

From: Unusual double ligand holes as catalytic active sites in LiNiO2

Fig. 8: Promotional effects of Fe3+ on the OER activity of LiNiO2.The alternative text for this image may have been generated using AI.

a LSVs and b Tafel plots of LiNiO2 in Fe-free 1 M KOH with the addition of Fe3+ solutions (prepared from ultrapure water and Fe(NO3)3 ∙ 9H2O, 99.999%-Fe, PURATREM, Strem). c Potentials at 10 mA cm−2 and Tafel slopes as a function of Fe3+ concentrations. d Comparison of the Fe3+ promotional effects on LiNiO2 and NiOOH. Note that 100 µM Fe3+ reaches the saturated concentration of Fe(OH)4- (the predominant Fe3+ species in alkaline solution)70.

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