Fig. 9. Differential UV-visible spectra of a NiONiOǀCoCoC11P electrode poised in a NaCl 0.1 M aqueous electrolyte at –0.44 (magenta line), –0.54 (pink line), –0.64 (red line), –0.74 (violet line), –0.84 (purple line) and –0.94 (navy blue line) V vs. NHE, with subtraction of the spectrum of the same electrode poised at –0.34 V vs. NHE under identical conditions.
