Exhaust gas electrochemical sensors with a Nb2Os sensing electrode

L. Chevallier*, E. Di Bartolomeo, E. Traversa

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review


Electrochemical planar sensors using Nb2O5 powders to fabricate sensing electrodes were tested both in laboratory and "in-situ", i.e. downstream a three-way catalytic converter of a FIAT fire 1242 c.c. spark ignition engine. Two cell configurations were compared, one with and the other without Pt paste under the metal oxide electrode. The best sensing performance both in laboratory and at the engine bench was obtained for the Pt | YSZ | Nb2O5 cell, without Pt below the oxide electrode. For this sensor configuration, very large EMF response values were obtained for hydrocarbon exposure, even at temperatures as high as 700°C.

Original languageEnglish (US)
Title of host publicationECS Transactions - Solid-State Ionic Devices 5
PublisherElectrochemical Society Inc.
Number of pages8
ISBN (Electronic)9781566776745
StatePublished - 2007
Externally publishedYes
EventSolid-State Ionic Devices 5 - 212th Electrochemical Society Meeting - Washington, DC, United States
Duration: Oct 7 2007Oct 12 2007

Publication series

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


ConferenceSolid-State Ionic Devices 5 - 212th Electrochemical Society Meeting
Country/TerritoryUnited States
CityWashington, DC

ASJC Scopus subject areas

  • General Engineering


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