Fig. 3

X-ray diffractograms and XPS spectra of NiFe/Ni-P and NiMo/Ni-P electrodes. a XRD patterns of Ni-P, NiFe/Ni-P, and NiMo/Ni-P catalysts. b XPS survey scan of NiFe/Ni-P with the deconvoluted core level spectra of c Ni 2p and d Fe 2p. e XPS survey scan of NiMo/Ni-P with the deconvoluted core level spectra of f Ni 2p and g Mo 3d