کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1298893 | 1498394 | 2007 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Influence of humidity and thermal decomposition on the protonic conductivity of single and polycrystalline CsH2PO4
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Influence of humidity and thermal decomposition on the protonic conductivity of single and polycrystalline CsH2PO4 Influence of humidity and thermal decomposition on the protonic conductivity of single and polycrystalline CsH2PO4](/preview/png/1298893.png)
چکیده انگلیسی
The influence of the preparation conditions and metaphosphate secondary phase on the proton conduction and chemical stability of the single and polycrystalline CsH2PO4 samples was studied by the ac admittance technique. The relation between frequency dependences of the admittance plots and adsorbed water as well as a content of the metaphosphate phase was determined. It was shown that in ambient conditions the thermal decomposition reactions start on the sample's surface at temperatures above specific point, T1Â =Â 425Â K, and the rate of the decomposition reactions on the interfaces is strongly influenced by the sample's quality. It is suggested that this reaction is initiated by the melting of the thin layer of CsH5(PO4)2 on the surface of CsH2PO4. The variation of the contributions of the intergrain and electrode-proton conductor boundaries to the total admittance with the temperature was studied for polycrystalline CDP samples and obtained data were compared with those for nominally pure CDP single crystal samples.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Solid State Ionics - Volume 178, Issues 7â10, April 2007, Pages 657-660
Journal: Solid State Ionics - Volume 178, Issues 7â10, April 2007, Pages 657-660
نویسندگان
A.I. Baranov, E.M. Kopnin, V.V. Grebenev, A. Sin, A. Zaopo, Yu. Dubitsky, P. Caracino,