Anchoring RuxP on 3D hollow graphene nanospheres as efficient and pH-universal electrocatalysts for the hydrogen evolution reaction

Rational design and development of ruthenium phosphide-based nanomaterials with Pt-like catalytic performance and long-term stability for hydrogen evolution reaction (HER) are highly desirable. Herein, a three-dimensional (3D) hybrid of graphene hollow nanospheres-supported ruthenium phosphides thro...

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Bibliographic Details
Published in:Carbon (New York) 2020-05, Vol.161, p.44-50
Main Authors: Li, Ji-Sen, Li, Jia-Yi, Huang, Meng-Jie, Kong, Ling-Xin, Wu, Zexing
Format: Article
Language:English
Subjects:
Anchoring
Carbon layer
Catalysts
Electrocatalysis
Electrocatalysts
Graphene
Graphene hollow nanosphere
Hydrogen
Hydrogen evolution reaction
Hydrogen evolution reactions
Hydrogen production
Nanomaterials
Nanospheres
pH-universal
Phosphides
Ruthenium
Ruthenium phosphide
Stability
Transition metals
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Summary:Rational design and development of ruthenium phosphide-based nanomaterials with Pt-like catalytic performance and long-term stability for hydrogen evolution reaction (HER) are highly desirable. Herein, a three-dimensional (3D) hybrid of graphene hollow nanospheres-supported ruthenium phosphides through a nanosphere-directed templating approach is developed. As expected, when evaluated as an electrocatalyst for the HER, the resultant composite exhibits excellent catalytic performance over a wide pH range due to the synergistic effects of the unique structure and composition. Particularly, the catalyst shows a low overpotential of 25.5 mV to achieve the current density of 10 mA cm−2, a small Tafel slope of 34.4 mV dec−1, as well as long-term operational stability for 10 h in basic conditions, which is superior to all other reported HER catalysts, including commercial 20% Pt–C. More importantly, this work provides new options for the design of 3D hollow graphene nanospheres supported transition metal phosphides as high-performance electrocatalysts for large-scale hydrogen production. A novel hybrid of 3D graphene hollow nanospheres supported ruthenium phosphides was prepared through a nanosphere-directed templating approach for the first time. When evaluated as an electrocatalyst for the HER, the resultant composite exhibits excellent catalytic performance over a wide pH range due to the synergistic effect of the unique structure and composition. [Display omitted]
ISSN:0008-6223
1873-3891
DOI:10.1016/j.carbon.2020.01.049