According to the Institute of Metal Research of the Chinese Academy of Sciences, this institute introduced a new material that can use body temperature to generate electricity. The research team expects that this new material can be commercialized in the next five years, powering Bluetooth headsets, health monitors, watches, smart bracelets and other wearable electronic devices. In the State Institute of Materials Science (Joint) of Shenyang Institute of Materials Science, Prof. Kaiping Kai introduced this new material to reporters: A single gray soft film with a width of 0.1 mm and a width of 0.1 mm was attached to the wrist of a human body. Immediate output voltage is displayed on the meter.
"This kind of high-performance flexible thermoelectric material can achieve the thinnest only tens of micrometers." Said Kaiping, "The thin film battery made of materials can recycle waste heat generated in everyday life, such as the use of lamp shades to dissipate heat. Or body temperature."
Yan Kaiping said that when human body temperature is used to generate electricity, when the body temperature differs from the ambient temperature by about 15 degrees Celsius, microwatt-milliwatt-level power generation can be achieved, and the power generation effect increases with the increase in temperature difference, especially when the human body consumes living organisms. Chemical energy generates heat or when the average annual outdoor temperature in northern regions is less than 20 degrees Celsius. As long as there is a temperature difference, electricity can be generated. Body temperature is higher than ambient temperature or ambient temperature is higher than body temperature.
According to reports, thin-film batteries made of the above-mentioned new materials, namely “flexible, cuttable cerium lanthanum/cellulose composite thermoelectric thin-film batteriesâ€, have for the first time been compounded by a network structure of high-performance lanthanum tellurium thermoelectric materials and low-cost cellulose paper. At the same time, it has excellent deformability, can fully fit the body surface with complex curvature changes, and maintain the temperature difference with the surrounding environment, thereby enhancing the thermal energy conversion efficiency, and can be applied to a new generation of low-power micro-system power supply technology.
It is understood that with the development of wearable electronic products, scientists at home and abroad have begun to pay attention to research on flexible thermoelectric materials and devices in recent years. (Wang Ying)
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