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http://dx.doi.org/10.4191/KCERS.2008.45.7.375

Electrochemical Approach in Plasma Display Panel Glass Melts doped with Sulfate and Sulfide II. Square Wave Voltammetry  

Kim, Ki-Dong (Department of Materials Science & Engineering, Kunsan National University)
Publication Information
Journal of the Korean Ceramic Society / v.45, no.7, 2008 , pp. 375-379 More about this Journal
Abstract
Redox behavior was observed in alkali alkaline earth silicate PDP (Plasma Display Panel) glass melts doped with sulfate and sulfide by square wave voltammetry (SWV). According to voltammograms produced at a temperature range of 1100 to $1400^{\circ}C$ and frequency range of 5 to 1000 Hz, both melts showed the same behavior in which there is one reduction peak at low frequency but another peak at an increase of frequency. Based on the frequency dependence of the peak current, self diffusivity of $S^{4+}$ was determined. Based on the temperature dependence of the peak potential, standard enthalpy (${\Delta}H^0$) and standard entropy (${\Delta}S^0$) for the reduction of $S^{4+}$ to $S^0$ were calculated.
Keywords
Sulfate; Sulfide; Voltammogram; Redox reaction; Diffusivity;
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Times Cited By KSCI : 3  (Citation Analysis)
Times Cited By SCOPUS : 3
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