Tailoring acidic microenvironments for carbon-efficient CO<sub>2</sub>electrolysis over a Ni–N–C catalyst in a membrane electrode assembly electrolyzer
Hefei Li, Haobo Li, Pengfei Wei, Yi Wang, Yipeng Zang, Dunfeng Gao, Guoxiong Wang, Xinhe Bao
Abstract
By tailoring the microenvironments of a Ni–N–C catalyst in an acidic MEA electrolyzer, we achieve a CO faradaic efficiency of 95% at 500 mA cm −2 , and the CO 2 loss is reduced by 86% at 300 mA cm −2 at pH 0.5, compared to alkaline CO 2 electrolysis.
Topics & Concepts
ElectrolysisCatalysisFaraday efficiencyCarbon fibersElectrodeInorganic chemistryMembrane electrode assemblyMembraneElectrochemistryAlkaline water electrolysisChemical engineeringMaterials scienceChemistryAnodeOrganic chemistryElectrolyteComposite materialPhysical chemistryBiochemistryEngineeringComposite numberCO2 Reduction Techniques and CatalystsElectrocatalysts for Energy ConversionAdvanced battery technologies research