Synthesizing Nanoparticles of Co-P-Se compounds as Electrocatalysts for the Hydrogen Evolution Reaction. (20th May 2015)

• Record Type: Journal Article
• Authors: Xiao, Mingshu; Miao, Yuqing; Tian, Yanping; Yan, Yuhua
• Is Part Of: Electrochimica acta. Volume 165(2015)
• Page Start: 206
• Page End: 210
• Publication Date: 2015-05-20
• Subjects: Co-P-Se -- electrocatalysts -- hydrogen evolution reaction -- electrolytic hydrogen production; Electrochemistry -- Periodicals; Electrochemistry, Industrial -- Periodicals; 541.37
• DOI: 10.1016/j.electacta.2015.03.023
• Languages: English
• ISSNs: 0013-4686

Abstract

Abstract: A new catalyst based on Co-P-Se compound that is comprised entirely of cheap and earthabundant elements, was first reported for electrolytic hydrogen production. The hydrothermal method at only 473 K was employed to prepare the nanoparticles (NPs) of Co-P-Se compound. The transmission electron microscope images reveal the nanoparticles of quasis-spherical structure and extremely small size with an average diameter of around 5 nm. The composites of Co-P-Se NPs and multi-walled carbon nanotubes (MWCNT) was loaded onto the electrode surface as an active hydrogen evolution reaction (HER) electrocatalyst, which is observed using a scanning electron microscopy. The electrochemical study shows that MWCNT helps to load more Co-P-Se catalysts and enhance the electron transfer between catalysts and electrode, and Co-P-Se exhibits more catalytic activity than Co-P or Co-Se alone. A small Tafel slope of 46 mV/dec and good acid stability was observed for the hydrogen evolution reaction of Co-P-Se/MWCNT.