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lithium telluride (Li2Te) is a silvery sputtering target that is used in solar cells and semiconductor materials. It is a crystal grown product generally available in most volumes. Please inquire for pricing and availability. lithium telluride is made by reacting lithium metal in liquid ammonia with with contolled amounts of tellurium.
The result is a compound with layered two-dimensional semiconductors in a range of shapes and orientations. These new 2-D silicon telluride nanomaterials are pure p-type semiconductors and can take up lithium or magnesium, making them candidates for electrodes in next-generation batteries.
The UT Austin researchers also created an electrolyte for the new sodium battery that solves one of the big problems with these batteries—their tendency to form dendrites, which shorten their life and can pose ignition risks. Their electrolyte, published in the journal Advanced Materials, consists of an inert solvent that keeps the sulfur in a semi-dissolved state similar to how cornstarch is kept in water, but at ambient temperatures.
The chemistry team has also found that introducing tellurium into the cathode of the Li-Sulfur battery greatly improves its performance, especially for anode-free full-cell configurations. This is because the addition of Te engenders a tellurized and sulfide-rich solid-electrolyte interphase (SEI) comprising lithium thiotellurate on the Li surface, which improves capacity retention, curtails Li deposition and prevents electrolyte decomposition. This dramatically improves the cyclability of these battery systems, making them more suitable for utility-grid storage applications where longevity and price are paramount.