Silica spheres-directed N-doped carbon supported Ni catalysts boost electrochemical CO evolution for syngas production

Abstract

Upon the preferred CO evolution (PCE)-preferred H2 evolution (PHE) Ni/NC&Mo/NC composite catalyst concept for syngas production from electrocatalytic CO2 reduction established in our previous work, herein, we focus on developing an efficient PCE catalyst unit to boost the syngas electrochemcial production by employing the silica sphere with the particle size of 260 nm as template, and a much superior CO partial current density of 42.8 mA cm-² at -0.8 V vs RHE is achieved, ascribed to the promoted Ni dispersion, accelerated mass/charge transfer and increased CO2 adsorption capacity.