The nature of space charge layers (SCLs) formed in solid electrolytes at contact with different materials has been long debated. A variety of theoretical approaches based on thermodynamics or electrochemistry have not shown a conclusive picture of the SCL phenomenon. In this work, the asymmetric growth of the SCLs upon increasing the bias potential at the SSE/electrode is directly observed with spectroscopic ellipsometry. Further the ionic resistance is determined and reveals a significant increase in activation energy for the Li-ion transport compared to the bulk electrolyte.
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The nature of space charge layers (SCLs) formed in solid electrolytes at contact with different materials has been long debated. A variety of theoretical approaches based on thermodynamics or electrochemistry have not shown a conclusive picture of the SCL phenomenon. In this work, the asymmetric growth of the SCLs upon increasing the bias potential at the SSE/electrode is directly observed with spectroscopic ellipsometry. Further the ionic resistance is determined and reveals a significant incre...
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