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本文研究了“Bi(BiF_3)|La_(0.95)Pb_(0.05)F_(2.95)|Ft”元件的氧敏特性和常温氢敏特性。元件的电动势与氧分压呈对数关系。150℃时,氧分压从0.21×10~5Pa到1.0×10~5Pa时,90％响应时间仅为80s。在所测的氢气分压范围内,电动势与氢分压对数呈良好线性关系:E=E_o-961gP_(H_2)mV。敏感电极反应归结为局域电流或称混合电势机理。20℃时,元件对空气中1000Pa氢气的90％响应时间仅用15s。
In this paper, the oxygen sensitive properties and hydrogen-sensitive properties at room temperature of “Bi (BiF_3) | La_ (0.95) Pb_ (0.05) F_ (2.95) | Ft” Components of the emf and oxygen partial pressure in a logarithmic relationship. When the partial pressure of oxygen is from 0.21 × 10 ~ 5Pa to 1.0 × 10 ~ 5Pa at 150 ℃, the 90% response time is only 80s. In the measured hydrogen partial pressure range, electromotive force and hydrogen partial pressure logarithm showed a good linear relationship: E = E_o-961gP_ (H_2) mV. Sensitive electrode reaction comes down to local current or mixed potential mechanism. At 20 ° C, the element responds 90% of the 1000 Pa hydrogen in the air in only 15 seconds.