Fabrication of 3D ordered mesoporous nickel phosphide for efficient hydrogen evolution reaction. (26th January 2023)

• Record Type: Journal Article
• Authors: Zhao, Xixi; Wu, Wenzhe; Gai, Hengjun; Song, Hongbing; Xiao, Meng; Zhu, Quanhong; Liang, Jilei; Huang, Tingting
• Is Part Of: International journal of hydrogen energy. Volume 48:Number 8(2023)
• Page Start: 3013
• Page End: 3025
• Publication Date: 2023-01-26
• Subjects: Ordered mesopores -- Nickel phosphide -- Electrocatalysis -- Hydrogen production; Hydrogen as fuel -- Periodicals; Hydrogène (Combustible) -- Périodiques; Hydrogen as fuel; Periodicals; 665.81
• DOI: 10.1016/j.ijhydene.2022.10.180
• Languages: English
• ISSNs: 0360-3199

Abstract

Abstract: This article successfully fabricates ordered mesoporous nickel phosphide (OM-Ni2 P) by a nanocasting method using KIT-6 as the template and nickel nitrate as the nickel precursor. The synthesized OM-Ni2 P catalyst perfectly repeats the highly symmetrical mesoporous structure of KIT-6 and exhibits a large amount of the active Ni substance Ni δ+ and the active P substance P δ− . The ordered mesoporous structure not only promotes electron transfer but also facilitates the diffusion of the reaction medium. OM-Ni2 P shows superior hydrogen evolution reaction (HER) electrocatalytic performance than the CA-Ni2 P catalyst with a disordered mesoporous structure. The OM-Ni2 P material is promising to be a substitute to Pt-based electrocatalysts for hydrolysis. Graphical abstract: Image 1 Highlights: The ordered mesoporous OM-Ni2 P catalyst was prepared by nanocasting method. OM-Ni2 P possesses more active Ni substance Ni δ+ and active P substance P δ− . The ordered mesoporous structure promotes electron transfer and facilitates reaction medium diffusion. OM-Ni2 P exhibits high HER performance of water electrolysis.