Modulating carbon quantum dots using multi-heteroatom doping as a bifunctional electrocatalyst for efficient oxygen and hydrogen evolution reactions in alkaline electrolytes
Nermeen S. Hafez, El‐Zeiny M. Ebeid, Aya Khalifa, Saleh A. Azim, Abdelhamid El‐Shaer, Mahmoud A. S. Sakr, Mohamed B. Zakaria
Abstract
Synthesis of multi-heteroatom doped carbon quantum dots is demonstrated. The obtained Si, N, P-CQDs showed exceptional OER in 1.0M KOH by reaching 10 mA cm −2 at 117 mV with a Tafel slope of 221.2 mV dec −1 and −10 mA cm −2 at 338 mV with 113 mV dec −1 for HER.
Topics & Concepts
ElectrocatalystBifunctionalHeteroatomOxygen evolutionElectrolyteCarbon fibersInorganic chemistryOxygenChemistryDopingHydrogenPhotochemistryMaterials scienceCatalysisElectrodeElectrochemistryOrganic chemistryPhysical chemistryOptoelectronicsComposite materialComposite numberRing (chemistry)Electrocatalysts for Energy ConversionElectrochemical Analysis and ApplicationsAdvanced Photocatalysis Techniques