【作者】 韩元山； 张建中； 王常珍；

【Author】 HAN Yuan-shan~1 ZHANG Jian-zhong~1 WANG Chang zhen~2 (1.Department of Chemical Engineering,Fushun Vocational Institute,Fushun 113006,China;2.School of Meterials & Metallurgy of Northeastern University,Shenyang 110006,China)

【机构】 抚顺职业技术学院化工系； 东北大学材料与冶金学院；

【摘要】 用 LaF₃（掺杂 CaF₂）小管作为固体电解质,分别以 H₂C₂O₄·2H₂O、H₂C₂O₄混合物和 Na₂SO₄·10H₂O、 Na₂SO₄混合物作为参比电极,用已知水蒸气分压的纯水和 KOH 溶液作为工作电极,构成了两类固体电解质水蒸气浓差电池．分别在8～33℃和6～24℃温度范围内研究了电池电动势与温度的关系,得出了有规律性的结果．即电池的电动势随温度的升高而变小,在温度恒定的情况下,随工作电极水蒸气分压的增大而变大,在 EMF 和1g(P_H2O（Ⅰ）/P_{H22O（Ⅱ）}之间有较好的线性关系, 可望成为一种固体电解质型的新式湿度传感器．更多还原

【Abstract】 The humidity sensors based on steam concentration cell were constituted by using small seramic tube of LaF₃ doped with CaF₂ as solide electrolyte,mixed H₂C₂O₄-H₂C₂O₄·2H₂O or Na₂SO₄-Na₂SO₄·10H₂O as refence electrode,and pure water or KOH solution as working electrode.Sensitive experiment of two kind humidity sensor was investigated in the temperature ranges of 8～33℃ and 6～24℃.The regular change was revealed between EMF and lg(P_HzO（Ⅰ）/P_HzO（Ⅱ）— EMF will become small along with temperature rise and EMF will become large along with work electrode P_HzO（Ⅰ）rise at constant temperature,there is a good liner relationship between EMF and lg P_HzO（Ⅰ）/P_HzO（Ⅱ）and it is a possible to become a new humidity sensor.更多还原