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据《日经产业新闻》报道,日本科学技术厅、航空航天技术研究所最近宣布,开发出一种新型元件,可将热能有效地转换成电能。这种元件可以在从室温到800C之间任何温度下,有效地将热能转换成电能,转换效率达到17%,为世界之最。该元件5mm见方,是由在200C以下热电效率高的碲化铋、在200～600C下热电效率高的碲化铅、在600C以上,热电效率高的硅化锗这三种材料重合制成的。在三种材料之间,夹有缓和热膨胀力的材料。在将这种元件的一面置于室温下。另一面加热至800C的实验中,发现其热电转换效率很高,刷新了迄今俄罗斯试制元件9%的世界最高纪录。热电转换元件被用作难以采用太阳能电池的行星探测器的能源,但其转换效率一般仅为3%～4%,难以用于
According to the Nikkei Business News, Japan’s Department of Science and Technology and the Institute of Aerospace Technology recently announced the development of a new type of component that efficiently converts thermal energy into electrical energy. This element can be at any temperature from room temperature to 800C, the effective conversion of thermal energy into electricity, the conversion efficiency of 17%, the highest in the world. The element 5mm square, is below 200C the following thermoelectric high-efficiency bismuth telluride, at 200 ~ 600C pyroelectric high efficiency of lead telluride, at 600C above, the high thermal efficiency of germanium silicide these three materials overlap made. Between the three materials, there is a material that relaxes the thermal expansion force. Place one side of this component at room temperature. The other side heated to 800C experiments, found that the thermoelectric conversion efficiency is high, so far refresh the 9% of the world’s highest trial components in Russia. Thermoelectric conversion elements are used as energy sources for planetary detectors that are difficult to use with solar cells, but their conversion efficiencies are generally only 3% to 4%, making them difficult to use