Cited 1 time in webofscience Cited 1 time in scopus

Pulse electrodeposited PtSn electrocatalyst on a PEDOT/graphene-based electrode for ethanol oxidation in an acidic medium

Title
Pulse electrodeposited PtSn electrocatalyst on a PEDOT/graphene-based electrode for ethanol oxidation in an acidic medium
Authors
Mendoza, Maria Krisandra L.Tongol, Bernard John V.Shanmugam, SangarajuKim, Hasuck
DGIST Authors
Shanmugam, Sangaraju
Issue Date
2018-10
Citation
International Journal of Hydrogen Energy, 43(43), 19930-19938
Type
Article
Article Type
Article
Keywords
Chlorine compoundsChronoamperometryCyclic voltammetryElectrocatalystsElectrodepositionElectrodesElectropolymerizationEthanolGrapheneScanning electron microscopyTin compoundsX ray photoelectron spectroscopyAnode catalystsElectrocatalytic activityElectrochemical stabilitiesEthanol oxidationHeterogeneous compositesPoly(3 ,4 ethylenedioxythiophene) (PEDOT)Poly-3 ,4-ethylenedioxythiophenePulse electrodepositionPlatinum
ISSN
0360-3199
Abstract
Pulse electrodeposition of Pt and Sn using 10 mM H2PtCl6⋅6H2O in 0.10 M H2SO4 and 10 mM SnCl2⋅2H2O in 0.10 M HCl was conducted on a support matrix consisting of electropolymerized poly (3,4-ethylenedioxythiophene) (PEDOT) and electrochemically exfoliated graphene oxide (EGO). The Field Emission – Scanning Electron Microscopy (FE-SEM) studies of PtSn/PEDOT/EGO (i.e., PEDOT on EGO) showed a homogeneous globular composite, while PtSn/EGO/PEDOT (i.e., EGO on PEDOT) revealed a heterogeneous composite with wrinkled and globular surface morphologies. An Energy Dispersive X-ray (EDX) analysis (as a percentage of Pt and Sn) of PtSn/PEDOT/EGO is in agreement with the X-ray Photoelectron Spectroscopy (XPS) analysis, indicative of a homogeneous surface for the dispersion of metallic particles. However, the EDX and XPS analyses of PtSn/EGO/PEDOT showed variations in the amount of Pt and Sn, indicative of possible mixing of the EGO and PEDOT support matrices. Cyclic voltammetry (CV) and chronoamperometry using 1.0 M ethanol in 0.1 M H2SO4 demonstrated higher electrocatalytic activity (83.7 mA/cm2) and electrochemical stability (29.0% current retention) in PtSn/PEDOT/EGO than PtSn/EGO/PEDOT. © 2018 Hydrogen Energy Publications LLC
URI
http://hdl.handle.net/20.500.11750/9370
DOI
10.1016/j.ijhydene.2018.09.010
Publisher
Elsevier Ltd
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
Files:
There are no files associated with this item.
Collection:
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.

BROWSE