Fig. 12From: Hydrogen production from water electrolysis: role of catalysts(Figure reprinted with permission from Ref. [61])A The HAADF-STEM, TEM, HRTEM, and elemental mapping of desired IrNiCu DNF structure (Figure reprinted with permission from Ref. [60]). B (a, b) TEM images of IrO2 nanoparticles and IrO2 nanoneedles, (c, d) OER performance before and after 2Â h galvanostatic operation, (c) LSV curves of IrO2 NN and unshaped nanoparticles, (d) Tafel slopeBack to article page