引用本文:
吴明娒, 任玉芳. LaF3掺杂PbF2电导和氧敏性质[J]. 应用化学,
1992, 9(1): 103-105.
Citation: Wu Mingmei, Ren Yufang. IONIC CONDUCTIVITY AND OXYGEN SENSING PROPERTIES OF LaF3 DOPED WITH PbF2[J]. Chinese Journal of Applied Chemistry, 1992, 9(1): 103-105.
Citation: Wu Mingmei, Ren Yufang. IONIC CONDUCTIVITY AND OXYGEN SENSING PROPERTIES OF LaF3 DOPED WITH PbF2[J]. Chinese Journal of Applied Chemistry, 1992, 9(1): 103-105.
LaF3掺杂PbF2电导和氧敏性质
English
IONIC CONDUCTIVITY AND OXYGEN SENSING PROPERTIES OF LaF3 DOPED WITH PbF2
Abstract:
LaF3 and La1-xPbxF3-x (x=0.05~0.15) solid solution materials were prepared and their AC conductivities were measured at frequency of 10kHz Presence of an appropriate amount of PbF2 made the conductivity increase, and the conductivity of La0.95 Pb0.05 F2.95 was about one order of magnitude higher than that of pure LaF3. Four solid galvanic cells made of La0.95 Pb0.05 F2.95 as electrolyte were investigated as potentiometric oxygen sensor. The sensor cell of BiF3(Bi)/La0.95 Pb0.05 F2.95/Pt showed shorter response than the others. The 90% response of the cell took as short as 80s, while oxygen partial pressure changed from 0.21×105Pa to 1.0×105Pa at 150℃.The electrochemical reaction on the sensing electrode was referred to as "two electron reaction".
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Key words:
- lanthanum trifluoride
- / solid state electrolyte
- / oxygen sensor
- / conductivity
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