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Highly active screen-printed Ir-Ti4O7 anodes for proton exchange membrane electrolyzers.

Lagarteira, Tiago and Han, Feng and Morawietz, Tobias and Hiesgen, Renate and Garcia Sanchez, Daniel and Mendes, A. and Gago, Aldo and Costa, Rémi (2018) Highly active screen-printed Ir-Ti4O7 anodes for proton exchange membrane electrolyzers. International Journal of Hydrogen Energy, 43 (35), pp. 16824-16833. Elsevier. DOI: 10.1016/j.ijhydene.2018.02.179 ISSN 0360-3199

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Abstract

Electroceramic support materials can help reducing the noble-metal loading of iridium in the membrane electrodes assembly (MEA) of proton exchange membrane (PEM) electrolyzers. Highly active anodes containing Ir-black catalyst and submicronic Ti4O7 are manufactured through screen printing technique. Several vehicle solvents, including ethane-1,2-diol; propane-1,2-diol and cyclohexanol are investigated. Suitable functional anodic layer with iridium loading as low as 0.4 mg cm-2 is obtained. Surface properties of the deposited layers are investigated by atomic force microscopy (AFM). The most homogeneous coating with the highest electronic conductivity is obtained using cyclohexanol. Tests in PEM electrolyzer operating at 1.7 V and 40 °C demonstrate that the CCM with anode coated with cyclohexanol presents a 1.5-fold higher Ir-mass activity than that of the commercial CCM.

Item URL in elib:https://elib.dlr.de/122625/
Document Type:Article
Title:Highly active screen-printed Ir-Ti4O7 anodes for proton exchange membrane electrolyzers.
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Lagarteira, TiagoDLRUNSPECIFIED
Han, FengFeng.Han (at) dlr.dehttps://orcid.org/0000-0003-1904-134X
Morawietz, TobiasHochschule EsslingenUNSPECIFIED
Hiesgen, Renaterenate.hiesgen (at) hs-esslingen.deUNSPECIFIED
Garcia Sanchez, Danieldaniel.garciasanchez (at) dlr.deUNSPECIFIED
Mendes, A.LEPAE, Chemical Engineering Department, University of PortoUNSPECIFIED
Gago, Aldoaldo.gago (at) dlr.deUNSPECIFIED
Costa, Rémiremi.costa (at) dlr.dehttps://orcid.org/0000-0002-3534-1935
Date:2018
Journal or Publication Title:International Journal of Hydrogen Energy
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:43
DOI :10.1016/j.ijhydene.2018.02.179
Page Range:pp. 16824-16833
Publisher:Elsevier
Series Name:Elsevier
ISSN:0360-3199
Status:Published
Keywords:Proton exchange membrane water electrolysis; Membrane electrodes assembly; Catalyst coated membrane; Iridium loading; Ceramic support; Screen printing.
HGF - Research field:Energy
HGF - Program:Storage and Cross-linked Infrastructures
HGF - Program Themes:Fuel cells
DLR - Research area:Energy
DLR - Program:E SP - Energy Storage
DLR - Research theme (Project):E - Electrochemical Processes (Fuel Cells)
Location: Stuttgart
Institutes and Institutions:Institute of Engineering Thermodynamics > Electrochemical Energy Technology
Deposited By: Costa, Dr Rémi
Deposited On:26 Nov 2018 11:01
Last Modified:26 Nov 2018 11:01

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