Phosphorus-Rich Ruthenium Phosphide Embedded on a 3D Porous Dual-Doped Graphitic Carbon for Hydrogen Evolution Reaction

[EN] Metal phosphides have recently emerged as promising electrocatalysts for hydrogen evolution reaction (HER). Herein, we report the synthesis of ruthenium diphosphide embedded on a dual-doped graphitic carbon by pyrolyzing chitosan beads impregnated with ruthenium chloride and phosphorus pentoxide. The as-synthesized RuP2@N-P-C displays a good electrocatalytic activity in acidic, neutral and alkaline media. We show that the HER activity of the electrocatalyst can be tuned by varying the concentration of Li+ cations. Co-diffusion effects on H+ exerted by Li+ on HER in the porous carbon matrix have been observed. Financial support by the Spanish Ministry of Science and Innovation (PDI2022- 126071OB-C21 and Severo Ochoa) and the Generalitat Valenciana (Prometeo 2021-038) are gratefully acknowledged. A.A. thanks assistance from Erasmus+ for partial support of her stay at Valencia. The European Commission is acknowledged for partial funding through the ECO2Fuel project. UEMF is acknowledged for financial support. A.A. thanks UEMF and UPV for an Erasmus+ 2019-1-ES01-KA107-062073 Scholarship. Anouar, A.; Antonio Doménech-Carbó; García Gómez, H. (2022). Phosphorus-Rich Ruthenium Phosphide Embedded on a 3D Porous Dual-Doped Graphitic Carbon for Hydrogen Evolution Reaction. Nanomaterials. 12(20):1-15. https://doi.org/10.3390/nano12203597