Assembly and application of zirconia solid electrolyte concentration cell Assembly and application of zirconia solid electrolyte concentration cell 3.3.1 Experimental purpose Solid electrolyte concentration cell is a technology developed in the 1970s. It is not only widely used for direct oxygen determination of molten metal, becoming an important means to control metallurgical process and product quality, but also widely used for the determination of high-temperature thermodynamic data. Such as the standard formation Gibbs free energy of compounds, the determination of component activity and activity interaction coefficient in molten metal and slag, etc. It is an important experimental technology in the field of metallurgical physical chemistry. In addition to oxygen determination cells, various new solid electrolyte cells are also being developed, such as silicon determination, nitrogen determination and other cells. The purpose of this experiment is to understand the working principle of solid electrolyte cells, learn the assembly method of zirconia-based solid electrolyte cells, and master the principle and equipment of using solid electrolyte cells to determine the standard Gibbs free energy of oxides by assembling solid electrolyte concentration cells, measuring the electromotive force at different temperatures and calculating the standard formation Gibbs free energy of oxides.
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