Fig. 14
From: Hydrogen production from water electrolysis: role of catalysts
(Figure reprinted with permission from Ref. [63])
a Overpotentials obtained from OER polarization curves on Au(111), GCE (glass carbon electrode), and gold-plated Ni foam at 10 mA cm−2. b Illustration of tuning the energetics of OER intermediates on CoOOH via alloying with Fe and W. c Map of OER activities for pure Fe, Co oxyhydroxides and W, Fe-doped Co oxyhydroxides, cobalt tungstate, and W oxides calculated with DFT + U