Abstract
The development of high-performance electrocatalysts for alkaline hydrogen evolution reaction (HER) is an important step towards achieving hydrogen economy but remains major challenge. This study reports the growth of ultralow Ru (1 wt%) modified Co nanostructures (Rud-Co) with coral-like nanoarray structures on carbon cloth via lattice expansion tactics. Specifically, the as-fabricated Rud-Co electrode exhibits extraordinary electrocatalytic activity, with an overpotential of 25 mV at a current density of 10 mA cm−2 and a small Tafel slope of 31 mV dec−1 in alkaline media, which is superior to the benchmark Pt/C. Density functional theory (DFT) calculations disclose that Ru can shift the d-band center of Co to higher fermi level, which promotes electron transfer, H2O dissociation and *H adsorption during catalysis. This work provides a promising strategy for the development of efficient transition metal-based alkaline HER electrocatalysts via accelerating electron transfer and promoting mass transportation.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
