Solid-state amperometric CO2 sensor using a sodium ion conductor

Ji Sun Lee, Jong Heun Lee, Seong Hyeon Hong

Research output: Contribution to journalArticlepeer-review

12 Citations (Scopus)


A solid-state amperometric CO2 sensor was prepared by combining a NASICON (Na+ conductor, Na3Zr2Si2PO12) with a porous Na2CO3 auxiliary layer deposited on a sensing electrode. The current between sensing and counter electrodes as a function of CO2 concentration was approximately linear in the range of 200-2000 ppm at 400 °C. The device could be operated stably during the test period (60 days). The sensing characteristics and long-term stability were discussed in the light of the sensing mechanism.

Original languageEnglish
Pages (from-to)1431-1434
Number of pages4
JournalJournal of the European Ceramic Society
Issue number6
Publication statusPublished - 2004 Jun
Externally publishedYes


  • Amperometric CO sensing
  • Ionic conductivity
  • Sensors

ASJC Scopus subject areas

  • Ceramics and Composites
  • Materials Chemistry


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