Se- and Te-based Cathodes

Tellurium has been tested as a cathode material for use in conjunction with an anode made of alkali metal, primarily lithium, in power sources with a high specific energy and power [99], The theoretical specific energy for Li/Te pair is 612 Wh kg High-temperature (470 °C) cells with Li, Te, and eutectic (LiF-LiCl-Lil) electrolyte in the molten state, or with more convenient, albeit more resistive, paste-type electrolytes, have been tested in the laboratory. Similar layouts have been proposed for utilizing the Li/Se pair (theoretic cal specific energy 1,210 W h kg ) with the cell ingredients in the molten state (365 C) or with paste electrolyte at a lower temperature. 

Let us note finally, that tellurium has been considered as an appropriate component for the lead grid alloy in lead-acid batteries, as improving its durability, mechanical strength, and anti-corrosive ability. In investigating Pb-Te binary alloys with different contents of Te (0.01-1.0 wt%) in sulfuric acid solution it was shown recently [104] that the introduction of Te can inhibit the growth of Pb02 and increase corrosion resistance of the positive grid alloy of a lead-acid battery. By the 

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