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World's First Thermoelectric Generator Made of Tailored Carbon Allotropes
Advanced Engineering Materials ( IF 3.6 ) Pub Date : 2020-03-26 , DOI: 10.1002/adem.202000108
Rudolf Borchardt 1 , Timo Fromm 1 , Armin Haase 1 , Jonas Fecher 1 , Stefan M. Rosiwal 1
Affiliation  

Carbon and carbon‐based compounds are today's mostly used sources of energy. By burning them, their chemically stored energy can be transformed to mechanical energy and further on to electrical energy. These transformation steps entail huge thermal losses. Thermoelectric generators (TEGs) are devices that allow the direct conversion of thermal gradients into electrical energy through a smart combination of n‐ and p‐conducting materials and are therefore an appealing approach to tackle thermal losses. However, the materials in today's TEGs, e.g., Bi2Te3, show limited thermal stability and often are toxic or not abundantly available which only allow for niche applications like military and aerospace equipment. Herein, the fabrication of the first, fully functional all‐carbon TEG is shown. The used carbon materials, made by chemical vapor deposition (CVD) processes, are both, nontoxic and abundant, and potentially paves the way for the large‐scale use of TEGs. Not only the thermal losses of conventional combustion processes but also thermal gradients established by solar thermal systems are potential fields of application. The assay is anticipated to spark further interest in carbon‐based thermoelectric materials. Such materials can be produced on a large scale and combined to a fully functional thermoelectric device.

中文翻译:

世界上第一台由量身定制的碳同素异形体制成的热电发电机

碳和碳基化合物是当今最常用的能源。通过燃烧它们,它们的化学存储能量可以转化为机械能,并进一步转化为电能。这些转变步骤带来巨大的热损失。热电发生器(TEG)是通过将n和p导电材料巧妙组合,将热梯度直接转换为电能的设备,因此是解决热损失的一种有吸引力的方法。但是,当今的TEG中的材料,例如Bi 2 Te 3,显示出有限的热稳定性,并且通常是有毒的或无法得到的,仅允许用于军事和航空航天设备等利基应用。本文显示了第一个全功能的全碳TEG的制造。通过化学气相沉积(CVD)工艺制成的碳材料既无毒又丰富,有可能为TEG的大规模使用铺平道路。不仅常规燃烧过程的热损失,而且太阳能热系统建立的热梯度也是潜在的应用领域。预计该试验将激发人们对碳基热电材料的进一步兴趣。这样的材料可以大规模生产并结合到全功能的热电装置中。
更新日期:2020-03-26
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