Oxygen electro-reduction on C22 and C276 nickel metal alloy

S. P. Rogers, D. F. Gervasio, J. H. Payer

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Scopus citations

Abstract

The C22 and C276 alloy metal surfaces were characterized for electrochemical activity in alkaline aqueous media in the presence and absence of oxygen (O2) and at 30° C The metal was studied by electrochemical impedance spectroscopy (EIS), voltammetry with a still electrode and a specialized rotating ring-disk electrode (RRDE) technique, the cyclic potential ring measurement (CPRM) method (1). The CPRM method gave the steady state O2 reduction kinetics. An initial study of O2 reduction on gold yielded virtually identical results to the work of Vilambi and Taylor who first described the CPRM method. The application of the CPRM method to the study of O2 reduction on C22 and C276 showed strong evidence for a predominantly series 2 step, 2 electron O2 reduction pathway, where kinetic rate constants k2 (evaluated at - 0.7V versus the saturated calomel electrode) and k3 (evaluated at - 1.2V) were estimated at 30°C to be 0.001 cm/s and 0.193 cm/s respectively for C22 and 0.013 cm/s and 0.232 cm/s respectively for C276. copyright The Electrochemical Society.

Original languageEnglish (US)
Title of host publicationECS Transactions - Critical Factors in Localized Corrosion 5
Subtitle of host publicationA Symposium in Honor of Dr. Hugh S. Isaacs
Pages431-442
Number of pages12
Edition31
DOIs
StatePublished - Dec 1 2007
Externally publishedYes
EventCritical Factors in Localized Corrosion 5: A Symposium in Honor of Dr. Hugh S. Isaacs - 210th ECS Meeting - Cancun, Mexico
Duration: Oct 29 2006Nov 3 2006

Publication series

NameECS Transactions
Number31
Volume3
ISSN (Print)1938-5862
ISSN (Electronic)1938-6737

Other

OtherCritical Factors in Localized Corrosion 5: A Symposium in Honor of Dr. Hugh S. Isaacs - 210th ECS Meeting
CountryMexico
CityCancun
Period10/29/0611/3/06

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ASJC Scopus subject areas

  • Engineering(all)

Cite this

Rogers, S. P., Gervasio, D. F., & Payer, J. H. (2007). Oxygen electro-reduction on C22 and C276 nickel metal alloy. In ECS Transactions - Critical Factors in Localized Corrosion 5: A Symposium in Honor of Dr. Hugh S. Isaacs (31 ed., pp. 431-442). (ECS Transactions; Vol. 3, No. 31). https://doi.org/10.1149/1.2789247