Spectroscopic investigation of structure and mechanism of proton conductivity CsHSO4 and composites CsHSO4/SiO2

被引：16
|
作者：
Burgina, E. B. [1 ]
Ponomareva, V. G.
Baltahinov, V. P.
Kostrovskiy, V. G.
机构：
[1] Russian Acad Sci, Boreskov Inst Catalysis, Siberian Div, Novosibirsk, Russia
[2] Russian Acad Sci, Inst Solid Chem & Mechanochem, Siberian Div, Novosibirsk, Russia
来源：
JOURNAL OF STRUCTURAL CHEMISTRY | 2005年 / 46卷 / 04期
基金：
俄罗斯基础研究基金会;
关键词：
proton electrolytes; composites; disordered phases; CsHSO4; IR and RS spectra; hydrogen bond;
D O I：
10.1007/s10947-006-0178-y
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
IR and RS spectra, structural, thermodynamical and transport properties of CsHSO4 and CsHSO4/SiO2 composites have been investigated. It is shown that CsHSO4 is stabilized in composites in phase 11 (monoclinic modification), which turns into amorphous state with increasing silicon dioxide content. A formation of disordered highly conducting states of CsHSO4 in composites at the temperatures noticeably lower than superionic phase transition was stated. Bond length equalization in sulfate-ions, weakening of hydrogen bond system, and as a result easier proton transfer in composites in comparison with pure salt take place in these conducting states. Mechanism for formation of composites and their proton conductivity is proposed.
引用
收藏
页码：608 / 618
页数：11
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