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Effect of Hydrogen Sulphide Contamination on Platinum Catalyst Degradation in Polymer Electrolyte Membrane Fuel Cells

Dushina, Anastasia and Wagner, Peter and Dyck, Alexander (2019) Effect of Hydrogen Sulphide Contamination on Platinum Catalyst Degradation in Polymer Electrolyte Membrane Fuel Cells. ECS Transactions, 92 (8), pp. 635-645. Electrochemical Society, Inc.. doi: 10.1149/09208.0635. ISSN 1938-5862.

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Official URL: http://ecst.ecsdl.org/content/92/8/635.short

Abstract

The effect of H2S contamination on platinum catalyst in PEMFC has been investigated in terms of rotation disk electrode measurements in 0.1 M HClO4. The electrochemical surface area was determined by hydrogen underpotential deposition and CO stripping method before and after accelerated stress tests (AST). The observed losses of ECSA of the catalyst in the presence of H2S were associated to the adsorbed sulphur on the catalyst surface which changed cyclic voltammetric characteristics of the material.The RDE experiments revealed that ORR mass and specific activities were essentially decreased after AST with H2S contamination attributed to the interstitial defect on platinum atom sites due to the adsorbed sulphur. The HR-TEM has not revealed any significant differences between the catalyst surface morphology before and after test while EDX mapping indicated higher amount of the sulphur after AST confirming the presence of adsorbed sulphur species on the platinum catalyst surface.

Item URL in elib:https://elib.dlr.de/129891/
Document Type:Article
Title:Effect of Hydrogen Sulphide Contamination on Platinum Catalyst Degradation in Polymer Electrolyte Membrane Fuel Cells
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Dushina, Anastasiaanastasia.dushina (at) dlr.dehttps://orcid.org/0000-0003-4193-9906
Wagner, Peterp.wagner (at) dlr.dehttps://orcid.org/0000-0002-5644-9881
Dyck, Alexanderalexander.dyck (at) dlr.dehttps://orcid.org/0000-0002-5010-8226
Date:2019
Journal or Publication Title:ECS Transactions
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Volume:92
DOI :10.1149/09208.0635
Page Range:pp. 635-645
Publisher:Electrochemical Society, Inc.
ISSN:1938-5862
Status:Published
Keywords:HT-PEMFC, poisoning, accelerated stress tests, electrochemical surface area
HGF - Research field:Energy
HGF - Program:Technology, Innovation and Society
HGF - Program Themes:Renewable Energy and Material Resources for Sustainable Futures - Integrating at Different Scales
DLR - Research area:Energy
DLR - Program:E SY - Energy Systems Analysis
DLR - Research theme (Project):E - Energy Systems Technology (old)
Location: Oldenburg
Institutes and Institutions:Institute of Networked Energy Systems > Fuel Cells
Deposited By: Lorenz, Julian
Deposited On:28 Oct 2019 17:39
Last Modified:31 Oct 2020 04:35

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