A highly efficient diatomic nickel electrocatalyst for CO<sub>2</sub> reduction
Meng-Jiao Sun, Zhiwei Gong, Jun‐Dong Yi, Teng Zhang, Xiaodong Chen, Rong Cao
Abstract
We report a facile but effective approach to construct a highly dispersed diatomic catalyst. A carbon-embedded diatomic Ni2 catalyst was synthesized from carbon black, polyaniline and nickel(ii) salts. The resulting catalyst exhibits excellent activity for the CO2 reduction reaction (CO2RR) at low Ni content with a faradaic efficiency of CO over 95% in the potential range from -0.6 V to -1.0 V vs. reversible hydrogen electrode (RHE). A high specific current density of 37.2 A mg-1 Ni was recorded at -1.1 V, among the highest reported values for Ni-based electrocatalysts.
Topics & Concepts
CatalysisElectrocatalystDiatomic moleculeNickelFaraday efficiencyPolyanilineHydrogenCarbon fibersCarbon blackReversible hydrogen electrodeInorganic chemistryRedoxElectrochemistryMaterials scienceChemistryElectrodePhysical chemistryMetallurgyWorking electrodeOrganic chemistryPolymerMoleculeComposite materialNatural rubberPolymerizationComposite numberCO2 Reduction Techniques and CatalystsElectrocatalysts for Energy ConversionAdvanced battery technologies research