Interface engineering of a CeO2–Cu3P nanoarray for efficient alkaline hydrogen evolution. Issue 5 (15th January 2018)

• Record Type: Journal Article
• Authors: Wang, Zao; Du, Huitong; Liu, Zhiang; Wang, Hui; Asiri, Abdullah M.; Sun, Xuping
• Is Part Of: Nanoscale. Volume 10:Issue 5(2018)
• Page Start: 2213
• Page End: 2217
• Publication Date: 2018-01-15
• Subjects: Nanoscience -- Periodicals; Nanotechnology -- Periodicals; 620.505
• DOI: 10.1039/c7nr08472b
• Languages: English
• ISSNs: 2040-3364

Abstract

Abstract : A CeO2 –Cu3 P nanoarray supported on nickel foam (CeO2 –Cu3 P/NF) behaves as an efficient and stable 3D alkaline HER electrocatalyst. Abstract : It is of great importance to design and develop highly active electrocatalysts for the hydrogen evolution reaction (HER) under alkaline conditions. In this work, we report the development of a CeO2 –Cu3 P nanoarray supported on nickel foam (CeO2 –Cu3 P/NF) as an excellent HER catalyst with the demand of an overpotential of only 148 mV to deliver a geometrical catalytic current density of 20 mA cm −2 in 1.0 M KOH. Remarkably, this catalyst also shows strong long-term electrochemical durability for at least 100 h with nearly 100% Faradaic efficiency. Density functional theory calculations reveal that the CeO2 –Cu3 P/NF hybrid has a lower water dissociation energy and a more thermo-neutral hydrogen adsorption free energy.