Corrosion Study of Cr-Oxide Ceramics Using Rotating Ring Disk Electrode

Filippo Fenini, Kent Kammer Hansen, Mogens Bjerg Mogensen*

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

93 Downloads (Pure)

Abstract

Proton Exchange Membrane Electrolysis demands new resistant and cheap materials for the anode components, and Cr-based spinels are acid stable ceramics, which may meet the requirements of such application to some extent. This work reports the electrochemical behavior of spinel-structured MnCu0.25Cr1.75O4 and NiCr2Oup to 2.0 V in order to determine the stability/dissolution of such materials when exposed to anodic potential. The ceramic/graphite composite was deposited on a rotating ring disk electrode and scanned while the ring electrode was held at 0.5 V vs SHE. The dissolution of Cr species was observed to happen as the oxidation proceeded by collecting the dissolved products at the ring electrode. HCrO4 and MnO4 were identified as dissolved products. Analysis of post-test solutions, revealed the difference between chemical and electrochemical corrosion of the materials.
Original languageEnglish
JournalJournal of The Electrochemical Society
Volume166
Issue number11
Pages (from-to)C3159-C3169
ISSN0013-4651
DOIs
Publication statusPublished - 2019

Cite this

@article{903f65e8bd9542caabeb932e9afd315c,
title = "Corrosion Study of Cr-Oxide Ceramics Using Rotating Ring Disk Electrode",
abstract = "Proton Exchange Membrane Electrolysis demands new resistant and cheap materials for the anode components, and Cr-based spinels are acid stable ceramics, which may meet the requirements of such application to some extent. This work reports the electrochemical behavior of spinel-structured MnCu0.25Cr1.75O4 and NiCr2O4 up to 2.0 V in order to determine the stability/dissolution of such materials when exposed to anodic potential. The ceramic/graphite composite was deposited on a rotating ring disk electrode and scanned while the ring electrode was held at 0.5 V vs SHE. The dissolution of Cr species was observed to happen as the oxidation proceeded by collecting the dissolved products at the ring electrode. HCrO4− and MnO4− were identified as dissolved products. Analysis of post-test solutions, revealed the difference between chemical and electrochemical corrosion of the materials.",
author = "Filippo Fenini and {Kammer Hansen}, Kent and Mogensen, {Mogens Bjerg}",
year = "2019",
doi = "10.1149/2.0191911jes",
language = "English",
volume = "166",
pages = "C3159--C3169",
journal = "Journal of The Electrochemical Society",
issn = "0013-4651",
publisher = "The Electrochemical Society",
number = "11",

}

Corrosion Study of Cr-Oxide Ceramics Using Rotating Ring Disk Electrode. / Fenini, Filippo; Kammer Hansen, Kent; Mogensen, Mogens Bjerg.

In: Journal of The Electrochemical Society, Vol. 166, No. 11, 2019, p. C3159-C3169.

Research output: Contribution to journalJournal articleResearchpeer-review

TY - JOUR

T1 - Corrosion Study of Cr-Oxide Ceramics Using Rotating Ring Disk Electrode

AU - Fenini, Filippo

AU - Kammer Hansen, Kent

AU - Mogensen, Mogens Bjerg

PY - 2019

Y1 - 2019

N2 - Proton Exchange Membrane Electrolysis demands new resistant and cheap materials for the anode components, and Cr-based spinels are acid stable ceramics, which may meet the requirements of such application to some extent. This work reports the electrochemical behavior of spinel-structured MnCu0.25Cr1.75O4 and NiCr2O4 up to 2.0 V in order to determine the stability/dissolution of such materials when exposed to anodic potential. The ceramic/graphite composite was deposited on a rotating ring disk electrode and scanned while the ring electrode was held at 0.5 V vs SHE. The dissolution of Cr species was observed to happen as the oxidation proceeded by collecting the dissolved products at the ring electrode. HCrO4− and MnO4− were identified as dissolved products. Analysis of post-test solutions, revealed the difference between chemical and electrochemical corrosion of the materials.

AB - Proton Exchange Membrane Electrolysis demands new resistant and cheap materials for the anode components, and Cr-based spinels are acid stable ceramics, which may meet the requirements of such application to some extent. This work reports the electrochemical behavior of spinel-structured MnCu0.25Cr1.75O4 and NiCr2O4 up to 2.0 V in order to determine the stability/dissolution of such materials when exposed to anodic potential. The ceramic/graphite composite was deposited on a rotating ring disk electrode and scanned while the ring electrode was held at 0.5 V vs SHE. The dissolution of Cr species was observed to happen as the oxidation proceeded by collecting the dissolved products at the ring electrode. HCrO4− and MnO4− were identified as dissolved products. Analysis of post-test solutions, revealed the difference between chemical and electrochemical corrosion of the materials.

U2 - 10.1149/2.0191911jes

DO - 10.1149/2.0191911jes

M3 - Journal article

VL - 166

SP - C3159-C3169

JO - Journal of The Electrochemical Society

JF - Journal of The Electrochemical Society

SN - 0013-4651

IS - 11

ER -