High-performance shape-engineerable thermoelectric painting

Sung Hoon Park, Seungki Jo, Beomjin Kwon, Fredrick Kim, Hyeong Woo Ban, Ji Eun Lee, Da Hwi Gu, Se Hwa Lee, Younghun Hwang, Jin-Sang Kim, Dow-Bin Hyun, Sukbin Lee, Kyoung Jin Choi, Wook Jo and Jae Sung Son ()
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Sung Hoon Park: School of Materials Science and Engineering, Ulsan National Institute of Science and Technology (UNIST)
Seungki Jo: School of Materials Science and Engineering, Ulsan National Institute of Science and Technology (UNIST)
Beomjin Kwon: Center for Electronic Materials, Korea Institute of Science and Technology (KIST)
Fredrick Kim: School of Materials Science and Engineering, Ulsan National Institute of Science and Technology (UNIST)
Hyeong Woo Ban: School of Materials Science and Engineering, Ulsan National Institute of Science and Technology (UNIST)
Ji Eun Lee: Thermoelectric Conversion Research Center, Korea Electrotechnology Research Institute
Da Hwi Gu: School of Materials Science and Engineering, Ulsan National Institute of Science and Technology (UNIST)
Se Hwa Lee: School of Materials Science and Engineering, Ulsan National Institute of Science and Technology (UNIST)
Younghun Hwang: School of Materials Science and Engineering, Ulsan National Institute of Science and Technology (UNIST)
Jin-Sang Kim: Center for Electronic Materials, Korea Institute of Science and Technology (KIST)
Dow-Bin Hyun: Center for Electronic Materials, Korea Institute of Science and Technology (KIST)
Sukbin Lee: School of Materials Science and Engineering, Ulsan National Institute of Science and Technology (UNIST)
Kyoung Jin Choi: School of Materials Science and Engineering, Ulsan National Institute of Science and Technology (UNIST)
Wook Jo: School of Materials Science and Engineering, Ulsan National Institute of Science and Technology (UNIST)
Jae Sung Son: School of Materials Science and Engineering, Ulsan National Institute of Science and Technology (UNIST)

Nature Communications, 2016, vol. 7, issue 1, 1-10

Abstract: Abstract Output power of thermoelectric generators depends on device engineering minimizing heat loss as well as inherent material properties. However, the device engineering has been largely neglected due to the limited flat or angular shape of devices. Considering that the surface of most heat sources where these planar devices are attached is curved, a considerable amount of heat loss is inevitable. To address this issue, here, we present the shape-engineerable thermoelectric painting, geometrically compatible to surfaces of any shape. We prepared Bi2Te3-based inorganic paints using the molecular Sb2Te3 chalcogenidometalate as a sintering aid for thermoelectric particles, with ZT values of 0.67 for n-type and 1.21 for p-type painted materials that compete the bulk values. Devices directly brush-painted onto curved surfaces produced the high output power of 4.0 mW cm−2. This approach paves the way to designing materials and devices that can be easily transferred to other applications.

Date: 2016
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DOI: 10.1038/ncomms13403

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