Fig. 6
From: Hydrogen production from water electrolysis: role of catalysts
(Figure reprinted with permission from Ref. [39])
A (a) FESEM image of Mo2C-R, (b) SEM image of Mo2C-R, (c) polarization curves in 0.5 M H2SO4, and (d) stability test of Mo2C-R in 0.5 M H2SO4 (Figure reprinted with permission from Ref. [38]). B (a) Preparation of molybdenum carbide (Mo2C) nanoparticles anchored on graphene nanoribbons (GNRs), and (b–d) activity and durability of Mo2C-GNR in acidic, basic, and neutral media, respectively