Park Sungbin, Mo Jun-Hyun, Kim Sohee, Hwang Hyeonseok, Jang Kwang-Suk
Department of Applied Chemistry, Hanyang University, Ansan, Gyeonggi-do 15588, Republic of Korea.
Department of Chemical and Molecular Engineering, Hanyang University, Ansan, Gyeonggi-do 15588, Republic of Korea.
ACS Appl Mater Interfaces. 2020 Apr 29;12(17):19415-19422. doi: 10.1021/acsami.0c00617. Epub 2020 Apr 16.
In this study, shape-deformable thermoelectric p- and n-type doughs are fabricated by blending single-walled carbon nanotubes with excess amounts of nonvolatile liquid surfactants for efficient energy harvesting from diverse heat sources. The shape-deformable thermoelectric doughs exhibit touch-healing properties and can be easily molded into arbitrary shapes by simple shaping methods, such as those commonly used for rubber play dough. We used cube-shaped thermoelectric doughs to fabricate a vertical thermoelectric generator. Considering the shape-deformable properties of the thermoelectric doughs, a contraction strain of ∼2% in the through-plane direction of the thermoelectric generator can be applied for an effective application of Δ. We show that the thermoelectric generator we built with eight p-n pairs exhibits a maximum output power of 2.2 μW at a vertical Δ of 15 K. Our results demonstrate the energy harvesting capability of thermoelectric generators with shape-deformable p- and n-type doughs. Owing to the properties of this material, thermoelectric generators with various device geometries can be fabricated for energy harvesting from a diverse range of nonflat heat sources.
在本研究中，通过将单壁碳纳米管与过量的非挥发性液体表面活性剂混合，制备出了可变形的热电p型和n型面团状材料，用于从各种热源高效收集能量。这种可变形的热电面团状材料具有接触愈合特性，并且可以通过简单的成型方法轻松地模制成任意形状，例如常用于橡胶橡皮泥的方法。我们使用立方体形的热电面团状材料制造了一个垂直热电发电机。考虑到热电面团状材料的可变形特性，在热电发电机的垂直方向上可施加约2%的收缩应变，以有效应用温差Δ。我们展示了我们构建的具有八个p-n对的热电发电机在垂直温差为15 K时表现出2.2 μW的最大输出功率。我们的结果证明了具有可变形p型和n型面团状材料的热电发电机的能量收集能力。由于这种材料的特性，可以制造具有各种器件几何形状的热电发电机，用于从各种非平面热源收集能量。
