Fig. 5
From: Hydrogen production from water electrolysis: role of catalysts
(Figure reprinted with permission from Ref. [37])
a–d HER performance, a LSV curves comparing different catalysts in 1.0 M KOH with IR correction, b Tafel plots, c TOF curves, d Chronopotentiometric curve of Pt–Ni(N) NWs. Insets: SEM images of Pt–Ni(N) NWs before and after the stability test. e–g DFT calculation results: e electron density difference for slices of Pt–Ni and Pt–Ni(N), f, g top-view and side-view of orbitals above the Fermi level for Pt–Ni and Pt–Ni(N)