參比氫分壓對固體電解質(zhì)濃差電池氫傳感器測試準確性的影響
發(fā)布時間：2018-07-17 06:22
【摘要】：采用固相反應法合成了CaZr_(0.9)In_(0.1)O_(3-α)高溫質(zhì)子導體材料并制備了固體電解質(zhì)管。通過組裝兩類濃差電池氫傳感器研究了不同參比氫分壓對電動勢測量誤差和待測端氫分壓計算誤差的影響。結(jié)果表明,在873~1073 K,且待測端氫分壓在0.005~0.1 atm(1 atm=1.013′105 Pa)范圍內(nèi),參比端氫分壓與測試端氫分壓相差越大,所測電動勢相對誤差越大,尤其在873 K低溫下更明顯。根據(jù)Nernst定律計算待測端氫分壓的計算誤差極大依賴于參比端與待測端氫分壓的比值。該誤差可通過用電動勢為零時的參比氫分壓代替測試端氫分壓的方法加以消除。利用該方法測定出在873~1073 K,氫化鋯在β-ZrH-_x和δ-ZrH_x兩相共存區(qū)的平臺氫分壓以及兩相轉(zhuǎn)變過程中的生成焓和生成熵。
[Abstract]:CaZr _ (0.9) in _ (0.1) O _ (3- 偽) high temperature proton conductor materials were synthesized by solid state reaction and solid electrolyte tubes were prepared. The effects of different reference hydrogen partial pressure on the measurement error of EMF and the calculation error of terminal hydrogen partial pressure were studied by assembling two kinds of hydrogen sensors of concentration difference cell. The results show that the larger the difference between the reference hydrogen partial pressure and the measured terminal hydrogen partial pressure is in the range of 0.005 ~ 0. 1 atm (1 atm=1.013'105 Pa), the larger the relative error of the EMF is, especially at 873 K. The error of calculating the terminal hydrogen partial pressure based on Nernst's law is greatly dependent on the ratio of the reference end to the measured terminal hydrogen partial pressure. The error can be eliminated by replacing the measured terminal hydrogen partial pressure with the reference hydrogen partial pressure of 00:00 electromotive force. Using this method, the formation enthalpy and entropy of formation of zirconium hydride in the coexistence region of 尾 -ZrH-tix and 未 -ZrH _ x in the two-phase coexisting region and the formation enthalpy and entropy of formation in the two-phase transition were determined at 873H _ (1073) K.
【作者單位】： 華中科技大學材料成形與模具技術(shù)國家重點實驗室;
【基金】：國家自然科學基金(51574129)~~
【分類號】：O646;TP212
本文編號：2129382
[Abstract]:CaZr _ (0.9) in _ (0.1) O _ (3- 偽) high temperature proton conductor materials were synthesized by solid state reaction and solid electrolyte tubes were prepared. The effects of different reference hydrogen partial pressure on the measurement error of EMF and the calculation error of terminal hydrogen partial pressure were studied by assembling two kinds of hydrogen sensors of concentration difference cell. The results show that the larger the difference between the reference hydrogen partial pressure and the measured terminal hydrogen partial pressure is in the range of 0.005 ~ 0. 1 atm (1 atm=1.013'105 Pa), the larger the relative error of the EMF is, especially at 873 K. The error of calculating the terminal hydrogen partial pressure based on Nernst's law is greatly dependent on the ratio of the reference end to the measured terminal hydrogen partial pressure. The error can be eliminated by replacing the measured terminal hydrogen partial pressure with the reference hydrogen partial pressure of 00:00 electromotive force. Using this method, the formation enthalpy and entropy of formation of zirconium hydride in the coexistence region of 尾 -ZrH-tix and 未 -ZrH _ x in the two-phase coexisting region and the formation enthalpy and entropy of formation in the two-phase transition were determined at 873H _ (1073) K.
【作者單位】： 華中科技大學材料成形與模具技術(shù)國家重點實驗室;
【基金】：國家自然科學基金(51574129)~~
【分類號】：O646;TP212
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1 甘禮騅 ,陳敏為 ,方綺云;硝基化合物還原、氫化的研究——(Ⅱ)3,3′-二硝基-4,4′-二氨基二苯醚在骨架鎳上的加氫動力學[J];華東化工學院學報;1984年02期
2 劉純鵬;華一新;;高硅含硫氧化銅礦用H_2+CaO還原動力學的研究[J];昆明工學院學報;1984年03期
3 D.B Murphy;樹安;;乙炔熱解沉積炭膜的動力學和機理[J];新型碳材料;1991年01期
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