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Nanosized IrOx–Ir Catalyst with Relevant Activity for Anodes of Proton Exchange Membrane Electrolysis Produced by a Cost-Effective Procedure

Lettenmeier, Philipp and Wang, Li and Golla-Schindler, Ute and Gazdzicki, Pawel and Cañas, Natalia A. and Handl, Michael and Hiesgen, Renate and Hosseiny, Seyed Schwan and Gago, Aldo and Friedrich, K. Andreas (2016) Nanosized IrOx–Ir Catalyst with Relevant Activity for Anodes of Proton Exchange Membrane Electrolysis Produced by a Cost-Effective Procedure. Angewandte Chemie International Edition, 128 (2), pp. 752-756. Wiley. DOI: 10.1002/ange.201507626 ISBN 00448249 ISSN 1433-7851

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Official URL: http://doi.wiley.com/10.1002/ange.201507626

Abstract

We have developed a highly active nanostructured iridium catalyst for anodes of proton exchange membrane (PEM) electrolysis. Clusters of nanosized crystallites are obtained by reducing surfactant-stabilized IrCl3 in water-free conditions. The catalyst shows a five-fold higher activity towards oxygen evolution reaction (OER) than commercial Ir-black. The improved kinetics of the catalyst are reflected in the high performance of the PEM electrolyzer (1 mgIr cm−2), showing an unparalleled low overpotential and negligible degradation. Our results demonstrate that this enhancement cannot be only attributed to increased surface area, but rather to the ligand effect and low coordinate sites resulting in a high turnover frequency (TOF). The catalyst developed herein sets a benchmark and a strategy for the development of ultra-low loading catalyst layers for PEM electrolysis.

Item URL in elib:https://elib.dlr.de/109386/
Document Type:Article
Title:Nanosized IrOx–Ir Catalyst with Relevant Activity for Anodes of Proton Exchange Membrane Electrolysis Produced by a Cost-Effective Procedure
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Lettenmeier, PhilippDLRUNSPECIFIED
Wang, Lili.wang (at) dlr.deUNSPECIFIED
Golla-Schindler, Uteute.golla-schindler (at) uni-ulm.deUNSPECIFIED
Gazdzicki, Pawelpawel.gazdzicki (at) dlr.deUNSPECIFIED
Cañas, Natalia A.natalia.canas (at) dlr.deUNSPECIFIED
Handl, MichaelHochschule EsslingenUNSPECIFIED
Hiesgen, Renaterenate.hiesgen (at) hs-esslingen.deUNSPECIFIED
Hosseiny, Seyed Schwanseyed.hosseiny (at) dlr.deUNSPECIFIED
Gago, Aldoaldo.gago (at) dlr.deUNSPECIFIED
Friedrich, K. Andreasandreas.friedrich (at) dlr.deUNSPECIFIED
Date:11 January 2016
Journal or Publication Title:Angewandte Chemie International Edition
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:128
DOI :10.1002/ange.201507626
Page Range:pp. 752-756
Publisher:Wiley
ISSN:1433-7851
ISBN:00448249
Status:Published
Keywords:Elektrokatalysatoren; Iridium; Sauerstoffentwicklung; Protonaustauschmembranen
HGF - Research field:Energy
HGF - Program:Storage and Cross-linked Infrastructures
HGF - Program Themes:Electrolysis and Hydrogen
DLR - Research area:Energy
DLR - Program:E EV - Energy process technology
DLR - Research theme (Project):E - Electrochemical Processes (Electrolysis) (old)
Location: Stuttgart
Institutes and Institutions:Institute of Engineering Thermodynamics > Electrochemical Energy Technology
Deposited By: Lettenmeier, Philipp
Deposited On:12 Dec 2016 13:53
Last Modified:31 Jul 2019 20:06

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