Professor of Chemistry at Northwestern University (Chicago, USA) Mercury Kanatzidis created a material with a record efficiency of thermoelectric generation. Effectiveness of the new material reaches 2.2, which is 20% better than the previous figure. Thus, we can say that the use of material elements for thermoelectric cooling can be effective as the best examples of evaporative coolers. Prospects for the use of such material are very large. Light and portable air conditioners, compressors without the need to refill coolant, more efficient Peltier modules, systems convert heat into electricity, particular interest in the automotive industry, and more.
The material is made on base of lead telluride, which has long been known for its outstanding thermoelectric properties, but its main secret - in the structure. At high magnification we can see that the material consists of grains of size from one to several thousand nanometers. Besides lead telluride The structure also includes strontium telluride and sodium. This set is a challenge, because in the end it turns expensive and toxic. However, Kanatzidis and his colleagues seek to replace these elements with more environmentally friendly and inexpensive. Related Products :
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