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Phase Transition and ionic Conductivity of Cesium Hydrogen Sulfate-PAN Composites  

최병구 (단국대학교 응용물리학과)
박상희 (단국대학교 응용물리학과)
Publication Information
Polymer(Korea) / v.28, no.2, 2004 , pp. 149-153 More about this Journal
Abstract
The cesium hydrogen sulfate (CsHSO$_4$) crystal is a superprotonic conductor above 140$^{\circ}C$ and possesses protonic conductivity three to low orders of magnitude higher than that at room temperature. Recently, the possibility of it as an electrolyte material for fuel cell system draws much attention. However, its plasticity and absorption of humidity place a limitation on its application. In this study, composites consisting of CsHSO$_4$ and polyacrylonitrile were prepared, and their phase transition properties and the ionic conductivities were evaluated. When the content of CsHSO$_4$ was about 80 vol%, a mechanically strong film with the protonic conductivity of 1${\times}$10$\^$-3/ Scm$\^$-1/ were made.
Keywords
cesium hydrogen sulfate (CsHSO$_4$); polyacrylonitrile; ionic conductivity; superprotonic conductor; electrolytes;
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