Abstract
According to classical theories, when an insulator is added to an electrical conductor, the conductivity of the two phase composite decreases. However, in many cases when the particle size is small, of the order of a micron, the electrical conductivity increases. C. Liang [1] was the first to report this phenomenon for a solid electrolyte. He studied LiI containing a fine dispersion of Al2 O3 particles, LiI (Al2 O3). At room temperature, he reported an enhancement of electrical conductivity of over one order of magnitude for a 35 to 40 mole percent addition of Al2 O3. Furthermore, Liang constructed cells using LiI (Al2 O3) as the solid electrolyte, lithium as the anode and a variety of two phase iodide mixtures as the cathode materials. In each case, the open circuit voltage was virtually the theoretical voltage as calculated from the cell reaction. This showed that the electrical current was predominantly ionic and not electronic.
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© 1985 Martinus Nijhoff Publishers, Dordrecht
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Wagner, J.B. (1985). Composite Materials as Solid Electrolytes. In: Sequeira, C.A.C., Hooper, A. (eds) Solid State Batteries. NATO ASI Series, vol 101. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-5167-9_7
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DOI: https://doi.org/10.1007/978-94-009-5167-9_7
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