Cr- and Ti-Based Spinels as Materials for Anodic Catalyst Support in PEM Electrolysis Cells: Assessing Corrosion Stability and Support Role in Catalyst Activity of Corrosion Stable Ceramics

This work aims to determine the stability of Cr- and Ti- based spinels as catalyst supports for oxygen evolution reaction (OER) catalyst in PEM electrolyzers (PEMECs). Different compositions of MCr2O4 (M=Ni, NiFe, Zn, Mg) and MTi2O4 (Li, Mg, Mn) have been synthesized by solid state synthesis. Pure a...

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Published in:ECS transactions 2018-04, Vol.85 (11), p.65-77
Main Authors: Fenini, Filippo, Hansen, Kent Kammer, Savaniu, Cristian, Irvine, John T. S., Mogensen, Mogens Bjerg
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container_issue 11
container_start_page 65
container_title ECS transactions
container_volume 85
creator Fenini, Filippo
Hansen, Kent Kammer
Savaniu, Cristian
Irvine, John T. S.
Mogensen, Mogens Bjerg
description This work aims to determine the stability of Cr- and Ti- based spinels as catalyst supports for oxygen evolution reaction (OER) catalyst in PEM electrolyzers (PEMECs). Different compositions of MCr2O4 (M=Ni, NiFe, Zn, Mg) and MTi2O4 (Li, Mg, Mn) have been synthesized by solid state synthesis. Pure and doped Cr-based spinels exhibit low conductivities at the operating temperatures of PEMECs (1.5 V vs SHE. LiTi2O4 is completely oxidized upon cycling up to 2.0 V vs SHE. Mixtures of IrO2/oxide support deposited on glassy carbon were tested toward OER, which showed a 10% higher absolute current at 2.0 V vs SHE in the case of IrO2/Cu-MnCr2O4 compared with pure IrO2.
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title Cr- and Ti-Based Spinels as Materials for Anodic Catalyst Support in PEM Electrolysis Cells: Assessing Corrosion Stability and Support Role in Catalyst Activity of Corrosion Stable Ceramics
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