Synergistically coupling P-doped Mo₂C@N, P dual-doped carbon-nanoribbons as an efficient electrocatalyst for the hydrogen evolution reaction

Abstract

Developing non-noble and high-performance electrocatalysts towards hydrogen evolution reaction (HER) in both acidic and alkaline medium remains a stern challenge. Herein, the composite of P-doped Mo2C and hierarchically ultrathin N,...

Synergistic Effect of Nitrogen/Phosphorus Co‐Doping and Molybdenum Carbide Induced Electron Redistribution of Carbon Layer to Boost Hydrogen Evolution Reaction†

“…In the past decade, molybdenum carbide (Mo 2 C) has attracted widespread attention in the field of catalysis, especially for the HER, owing to the unique platinum‐like d‐band electronic structure. [ 4,6‐10 ] Nevertheless, the improvement in the HER performance of Mo 2 C is mainly limited due to the strong hydrogen adsorption free energy on its surface. In this regard, considerable efforts have been made to improve the HER performance from the viewpoint of optimizing the hydrogen adsorption free energy, including heteroatom doping and heterostructures with other compounds.…”

“…In this regard, considerable efforts have been made to improve the HER performance from the viewpoint of optimizing the hydrogen adsorption free energy, including heteroatom doping and heterostructures with other compounds. [ 8‐9,11‐15 ] In addition, poor conductivity and easy agglomeration also significantly affect the catalytic performance of Mo 2 C. Recently, wrapping active material into conductive carbon layer has been proposed as an efficient strategy to solve the above issues, since the presence of carbon layer can not only improve the conductivity of Mo 2 C, but also effectively prevent the degradation and agglomeration of Mo 2 C during the catalytic process by preventing Mo 2 C nanoparticles from direct contact with the electrolyte. [ 6‐7,16‐17 ] It should be mentioned here that since Mo 2 C nanoparticles are not in direct contact with the electrolyte, a question arises: whether the direct HER active sites come from the carbon layers or Mo 2 C nanoparticles?…”

Hollow Co nanoparticle/carbon nanotube composite foam for efficient electrocatalytic hydrogen evolution

“…53,54 Besides high activity, another important criterion for highperformance electrocatalysts was to verify their long-term stability. [55][56][57] The Co/NCNT-25 catalyst was used to test the stability in 1 M KOH (Fig. 7a and b).…”