NiO/C enhanced by noble metal (Pt, Pd, Au) as high-efficient electrocatalyst for oxygen evolution reaction in water oxidation to obtain high purity hydrogen

• Published in: Ionics Vol. 23; no. 8; pp. 2161 - 2166
• Main Authors: Wang, Shang-Qing, Xia, Wei-Yan, Liang, Zhi-Shan, Liu, Zi-Li, Xu, Chang-Wei, Li, Qing-Yu
• Format: Journal Article
• Language: English
• Published: Berlin/Heidelberg Springer Berlin Heidelberg 01.08.2017; Springer Nature B.V
• Subjects: Carbon black; Catalysts; Chemistry; Chemistry and Materials Science; Condensed Matter Physics; Electrochemistry; Electrodes; Energy Storage; Gold; Metal particles; Optical and Electronic Materials; Original Paper; Oxidation; Oxygen evolution reactions; Palladium; Platinum; Renewable and Green Energy; Synergistic effect; Water splitting; Oxygen evolution; Noble metals; Carbon; Water oxidation; Nickel oxide
• ISSN: 0947-7047; 1862-0760
• DOI: 10.1007/s11581-017-2041-x

Carbon black is used as conducting support for NiO nanoparticles, and noble metal particles are well dispersed on NiO/C with an average diameter of 4–8 nm. Benefiting synergistic effect, NiO/C by adding noble metal exhibits superior electrochemical activity and excellent stability for oxygen evolution reaction in water splitting. A catalyst with a weight ratio of Au to NiO of 1:2 gives the best performance. Onset potential on the Au-NiO(wt 1:2)/C electrode shifts more negatively than that on Pt-NiO(wt 1:2)/C and Pd-NiO(wt 1:2)/C, and onset potential on the Au-NiO(wt 1:2)/C electrode is lower than that on the other electrodes.