Cited 12 time in
Cited 11 time in
Non-platinum oxygen reduction electrocatalysts based on carbon-supported metal-polythiophene composites
- Non-platinum oxygen reduction electrocatalysts based on carbon-supported metal-polythiophene composites
- Han, Su Jung; Jung, Hyun Jung; Shim, Jun Ho; Kim, Hyun-Chul; Sung, Shi-Joon; Yoo, Bong; Lee, Dong Ha; Lee, Chongmok; Lee, Youngmi
- DGIST Authors
- Kim, Hyun-Chul; Sung, Shi-Joon; Lee, Dong Ha
- Issue Date
- Journal of Electroanalytical Chemistry, 655(1), 39-44
- Article Type
- Acidic Conditions; Catalyst Activity; Catalytic Activity; Chemical Polymerization; Composite Materials; Electrocatalyst; Electrocatalysts; Electrocatalytic Activity; Electrolysis; Electrolytic Reduction; Electron Transfer; Exchange Current Densities; Iridium; Metal-Polymer Composite; Metals; N Value; Non-Platinum; Number of Electrons; Onset Potential; Oxygen; Oxygen Reduction; Oxygen Reduction Reaction; Palladium; Platinum; Poly-Thiophene; Polymers; Polythiophene; Rotating Disk Electrode Voltammetry; Rotating Disks; Superior Catalysts; Supported Metals; Tafel Plots; Tin
- A series of carbon-supported metal-polythiophene composite (M-PTh/C) electrocatalysts are synthesized based on seven different non-Pt metals (M = Ir, Ru, Pd, Co, Fe, Ni, Sn) using chemical polymerization method. The electrocatalytic activity toward the oxygen reduction reaction (ORR) is characterized in acidic condition using rotating disk electrode voltammetry. Ir-, Ru-, and Pd-PTh/C show far more positive (ca. 700 mV) ORR onset potentials than Co-, Fe-, Ni-, and Sn-PTh/C. Further studies on the ORR kinetics are carried out for the three superior catalysts, Ir-, Ru-, Pd-PTh/C, using Koutecky-Levich and Tafel plots. The number of electrons (n) transferred in the ORR is ∼4 for these three catalysts, suggesting 4-electron transfer ORR is dominant. Considering all the obtained factors (such as the onset potential, n value, and exchange current density), Ir- and Ru-PTh/C catalysts are concluded to have relatively excellent ORR catalytic activity. © 2011 Elsevier B.V. All rights reserved.
- Related Researcher
There are no files associated with this item.
- Magnet-Controlled Materials Research Group1. Journal Articles
Convergence Research Center for Solar Energy1. Journal Articles
Convergence Research Center for Wellness1. Journal Articles
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.