Relationship between CO₂ Sensor Voltage Response and Phase Equilibrium of Solid Electrolyte Na,K-β/β″-Al₂O₃

J.H.YANG,H.Nafe, F.Aldinger and D.S.YAN1)Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China2)Max-Planck-Institut fur Metallforschung, Pulvermetallurgisches Laboratoratium, Heisenbergstrasse 5, 70569 Stuttgart, Germany

摘 要：<正> A type of CO₂ sensot based on oxygen concentration cell was designed as following:Cell 1:Pt|Au, O₂,CO₂|Na₂CO₃（Au）|NKBA（Au）|YSZ|O₂, CO₂|Pt or Cell ll:Pt|Au,O₂,CO₂|K₂C0₃（Au）|NKBA（Au）|TSZ|O₂|Pt.（Na,K-β/β″-Al₂O₃ is named by NKBA）. The sensor signal is consistent with the Nernstian slope within the region ofphase equilibrium for Na,K-β/β"-Al₂O₃ material. The relatiohship between CO₂ sensor vpltage response and phaseequilibrium of solid electrolyte Na, K-β/β-Al₂O₃ is discussed in this paper.

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