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In Situ determination of the kinetics of reaction between lithium and fast-ion conducting lithium borate glasses
Journal article   Peer reviewed

In Situ determination of the kinetics of reaction between lithium and fast-ion conducting lithium borate glasses

Michel W. Barsoum and Harry L. Tuller
Solid state ionics, v 18(1), pp 388-392
1986
DOI: https://doi.org/10.1016/0167-2738(86)90147-5
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Abstract

A novel electrochemical technique based on coulometric titration in cells of the type: LiAl-Al/Glass/LiA1A1 or LiSnSn was used to determine the chemical stability and kinetics of reaction between Li and lithium borate glass electrolytes. A Li 2O.B 20 3 glass was found to be an ideal Li electrolyte over a wide Li activity range (10 −17 - 0.06 at 380 ° C) 2. A chlorine containing glass of nominal composition Li 4B 7O 12Cl was found to react at very low activities of Li (< 10 −9) to form a predominantly ionic crystalline reaction layer composed mainly of 3Li 2O.B 2O 3. The rate limiting step in the corrosion process was found to be the electron diffusivity, D e. The chemical diffusion coefficient was found to be about 5 × 10 −10 cm 2/ sec at 380°C with an activation energy equal to 0.86 eV.

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Web of Science research areas
Chemistry, Physical
Physics, Condensed Matter
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