Cited 41 time in webofscience Cited 41 time in scopus

Investigation of hollow nitrogen-doped carbon spheres as non-precious Fe-N-4 based oxygen reduction catalysts

Investigation of hollow nitrogen-doped carbon spheres as non-precious Fe-N-4 based oxygen reduction catalysts
Sanetuntikul, J[Sanetuntikul, Jakkid]Chuaicham, C[Chuaicham, Chitiphon]Choi, YW[Choi, Young-Woo]Shanmugam, S[Shanmugam, Sangaraju]
DGIST Authors
Sanetuntikul, J[Sanetuntikul, Jakkid]; Shanmugam, S[Shanmugam, Sangaraju]
Issue Date
Journal of Materials Chemistry A, 3(30), 15473-15481
Article Type
Alkaline Fuel CellsCarbonCatalystsCathodesDoping (Additives)DurabilityElectrocatalystsElectrodesElectrolyte SolutionsElectrolytesElectrolytic ReductionFuel Cell ApplicationFuel CellsHeat-Treatment EffectsHeat TreatmentMaximum Power DensityNitrogen-Doped CarbonsNon-Precious CatalystsOxygenOxygen Reduction CatalystsOxygen Reduction ReactionPolyelectrolytesProton-Exchange Membrane Fuel Cells (PEMFC)Solid ElectrolytesX Ray Absorption
The development of inexpensive non-precious oxygen reduction catalysts has become one of the most important efforts in polymer electrolyte membrane fuel cells. In this report, we synthesized a non-precious electrocatalyst from a single precursor, iron(iii) diethylene triaminepentaacetate, using a heat-treatment effect to prepare an active catalyst. A series of catalysts were prepared at different temperatures leading to different degrees of graphitization, heteroatom content and activity. In 0.1 M KOH electrolyte solution, the oxygen reduction reaction (ORR) onset potential of the HNCS71 catalyst was as high as 0.97 V, and half-wave potentials were only 20 mV lower than those for Pt/C. X-ray absorption measurements of the Fe K-edge showed the structure of Fe-N4 centers, formed in HNCS71, which were responsible for the ORR activity. An alkaline exchange membrane fuel cell fabricated with HNCS71 as the cathode was tested in a H2-O2 single cell and showed a maximum power density of ∼68 mW cm-2. The 100 hour fuel cell durability test of the HNCS71 cathode showed a decay in the current density of about 14% at 0.4 V. Therefore, the HNCS catalyst appears to be a promising new class of non-precious catalysts for fuel cell applications. © 2015 Royal Society of Chemistry.
Royal Society of Chemistry
Related Researcher
  • Author Shanmugam, Sangaraju Advanced Energy Materials Laboratory
  • Research Interests Electrocatalysts for fuel cells; water splitting; metal-air batteries; Polymer electrolyte membranes for fuel cells; flow batteries; Hydrogen generation and utilization
There are no files associated with this item.
Department of Energy Science and EngineeringAdvanced Energy Materials Laboratory1. Journal Articles

qrcode mendeley

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.