A binary copper-nickel hierarchical structure templated by metal-organic frameworks for efficient hydrogen evolution reaction. (28th January 2019)

• Record Type: Journal Article
• Authors: Gan, Lang; Fang, Jing; Zhang, Kai; Lai, Yanqing; Li, Jie
• Is Part Of: International journal of hydrogen energy. Volume 44:Number 5(2019)
• Page Start: 2841
• Page End: 2847
• Publication Date: 2019-01-28
• Subjects: Electrocatalysts -- Hydrogen evolution reaction -- Surface engineering; Hydrogen as fuel -- Periodicals; Hydrogène (Combustible) -- Périodiques; Hydrogen as fuel; Periodicals; 665.81
• DOI: 10.1016/j.ijhydene.2018.12.025
• Languages: English
• ISSNs: 0360-3199

Abstract

Abstract: Developing active and cost-effective electrocatalysts for hydrogen evolution reaction is greatly desired for growing energy demands. Here, we report a promisingly hierarchical nickel-copper nitride electrode via a simple surface engineering process with a direct growth of copper-based metal-organic frameworks on nickel foam, followed by a low temperature ammonization, as the efficient catalyst for hydrogen evolution reaction. The as-fabricated nickel-copper nitride electrode exhibits a remarkable activity with a lower overpotential of 58 mV for hydrogen evolution reaction at the current density of 10 mA cm −2, and with strong long-term stability of a negligible morphological changes and potential increases after uninterrupted testing. This work opens a new avenue to design robust and eco-friendly electrocatalyst for hydrogen evolution reaction. Highlights: Cux Ni4-x N/NF was successfully prepared by using a surface engineering process. Cux Ni4-x N/NF showed a low overpotential of 58 mV for hydrogen evolution reaction. A part of Cu 2+ is reacted with nickel, generating abundant Ni and O vacancies.