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固态氧化物阴极在氯化钙熔盐电解质中的脱氧速率可依据氧离子的稳态扩散模型(PRS模型)由固态氧化物阴极孔隙率P,还原后金属与还原前氧化物之间的摩尔体积比R,还原后阴极的体积收缩率S等参数直接计算.PRS模型重要意义还在于可提供极简单的公式以预测不同金属氧化物还原时固态阴极的优化孔隙率,而固态阴极孔隙率对其脱氧速率有显著影响.对于Ta2O5电解,其固态阴极孔隙率不宜大于50%.相关理论预测结果得到了固态Ta2O5在氯化钙熔盐中电解实验的良好验证,表明PRS模型对固态化合物阴极的快速、高效电解具有重要的指导意义.
The rate of deoxidation of the solid oxide cathode in the calcium chloride molten salt electrolyte can be determined from the solid oxide cathode porosity P, the molar volume between the reduced metal and the prereduction oxide based on the steady state diffusion model (PRS model) of the oxygen ions, Ratio R, volumetric shrinkage S of cathode after reduction, etc. The PRS model is also of significant importance in providing a very simple formula to predict the optimized porosity of solid state cathodes for different metal oxide reduction, Deoxidation rate has a significant effect.For Ta2O5 electrolysis, the solid cathode porosity should not be greater than 50% .Related theoretical predictions have been solid electrolytes in Ta2O5 electrolysis experiments of calcium chloride good validation, indicating that the solid state compound PRS cathode fast Efficient electrolysis has important guiding significance.