新型微温差电池的设计

A New Type of Micro-thermoelectric Power Generator

将纳米材料的高效温差电转化性能和IC(集成电路)制造技术的长处相结合,设计出了一种全新结构的微型温差电池,这种全新结构的微型温差电池采用以多孔氧化铝模板为载体的n型和p型纳米线阵列温差电材料构成,其独特的层状结构有效地发挥了纳米线温差电材料的高效温差电转换性能,它通过将纳米线先并联再串联的方式使微型温差电池获得极高的电压输出,微型温差电池的厚度不超过100μm。

Miniaturized solid-state devices such as MEMS, micro-electrical system and even 'system on a chip' are of interest for variety of space and terrestrial applications. For those micro-systems, micro-power sources with low power, high voltage output are necessary. To meet the promising requirement, we combined the high thermoelectric performance of nanowires with the advantage of IC fabrication process and designed a totally new type of micro-thermoelectric power generator which is comprised of N-type and P-type Bi2Te3 nanowire array thermoelectric materials. The nanowires array are embedded in the alumina nanoporous film and the unique laminar structure of microgenerator makes thermo-electricity conversion more effective. A high voltage output is obtained by the connection of the nanowires in parallel and then in series. The designed micropower generator possesses a film like configuration and its thickness is less than 100 mm.