The electrochemistry of cells with solid electrolytes is in many aspects similar to the electrochemistry with aqueous solutions or ionic liquids , but we have to take into account special conditions. Solid electrolyte cells can be built up with all ionic conductors provided that the transference number for ionic species is nearly one. Very common and widely used in industry and scientific labs are cells with electrolytes having an ionic conductivity based on mobile oxygen ions (more precisely oxide ions).
The specific characteristic of solid electrolyte cells can be summarized as follows:
The solid electrolyte is only under certain conditions regarding temperature and partial pressure a pure ionic conductor. Generally, such solids are so-called mixed conductors. (see entry Mixed Conductors, Determination of Electronic and Ionic Conductivity (Transport Numbers)). For example, the oxide ionic conductor is not fixed in its chemical composition because under low partial pressure oxygen is...
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Guth, U. (2014). Solid State Electrochemistry, Electrochemistry Using Solid Electrolytes. In: Kreysa, G., Ota, Ki., Savinell, R.F. (eds) Encyclopedia of Applied Electrochemistry. Springer, New York, NY. https://doi.org/10.1007/978-1-4419-6996-5_422
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