Design of Fe,N co-doped multi-walled carbon nanotubes for efficient oxygen reduction
Peng Du, Yan Bao, Chen Guo, Chi‐Man Lawrence Wu, Jie Pan, Chenghao Zhao, Fei‐Xiang Ma, Jian Lü, Yang Yang Li
Abstract
Unique Fe and N co-doped multi-walled carbon nanotubes are designed to efficiently catalyze the oxygen reduction reaction (ORR). The preparation processes involve surface functionalization, subsequent wet impregnation and final thermal fixation of Fe-Nx species. The catalyst achieved outstanding alkaline ORR performance with a very positive half-wave potential (∼0.91 V). Theoretical calculations show that the carbon layer below the active Fe-Nx sites is beneficial to the ORR.
Topics & Concepts
Carbon nanotubeOxygenReduction (mathematics)Oxygen reductionCarbon fibersDopingOxygen reduction reactionMaterials scienceChemical engineeringNanotechnologyChemistryInorganic chemistryOptoelectronicsOrganic chemistryPhysical chemistryElectrochemistryComposite materialElectrodeComposite numberEngineeringMathematicsGeometryElectrocatalysts for Energy ConversionFuel Cells and Related MaterialsAdvanced Memory and Neural Computing