High-performance shape-engineerable thermoelectric painting

Park, Sunghoon; Jo, Sung Eun; Kwon, Beomjin; Kim, Fredrick; Ban, Hyeong Woo; Lee, Ji Eun; Gu, Da Hwi; Lee, Se Hwa; Hwang, Younghun; Kim, Jin Sang; Hyun, Dow-Bin; Lee, Sukbin; Choi, Kyoung Jin; Jo, Wook; Son, Jae Sung

doi:10.1038/ncomms13403

Cited by 139 publications

(76 citation statements)

References 57 publications

(88 reference statements)

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“…Heat transfers faster to the conformal film increasing its temperature higher than the taped sample, which is attributed to empty spaces between the film and substrate. It is worth noting that this protocol to obtain conformal films does not require the use of elevated temperatures, as is the case for the recently reported inorganic conformal inks 43…”

Section: Resultsmentioning

confidence: 97%

Farming thermoelectric paper

Abol-Fotouh

Dörling

Zapata‐Arteaga

et al. 2019

Energy Environ. Sci.

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Section: Resultsmentioning

confidence: 97%

Farming thermoelectric paper

Abol-Fotouh

Dörling

Zapata‐Arteaga

et al. 2019

Energy Environ. Sci.

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“…One advantage of the radial structure is the good fit to the curved surfaces of many heat sources compared to traditional flat‐plate TEGs. For such a curved heat source, methods to mitigate geometric mismatch must be devised . If the heat source consists of a hot fluid running through a circular pipe, which is true for many cases, a radial TEG can be considered.…”

Section: Introductionmentioning

confidence: 99%

On the volume power density of radial thermoelectric generators

Han

Wee

2020

Int J Energy Res

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We examine the volume power density of radial thermoelectric generators (TEGs). Radial, or tubular, TEGs have been considered as an alternative to the usual flat-plate TEGs due to its improved geometric match to typical curved heat sources and high surface power density. However, surface power density is not the only important performance index in realistic situations. Especially for TEGs with inorganic materials that have high raw material prices, volume power density can be important as well. In this note, an analytic model of a radial TEG is studied with a numerical trial-and-error approach for investigating its volume power density. At the same time, an alternative, approximate method of estimating the maximum power of the radial TEG is presented.Using these two approaches, we estimate the volume power density of a skutterudite-based radial TEG and compare the results to those of a flat-plate TEG. The volume power density of the radial TEG is significantly lower than that of the flat-plate TEG. For example, our calculation for a representative case with free convection on the cold side shows that the volume power density of the radial TEG will be 107 W/m 3 at best. The result improves with forced convection, and our calculation for a representative case with forced convection on the cold side exhibits the maximum volume power density of 24 100 W/m 3 . All these values turn out to be smaller roughly by one order of magnitude than the maximum volume power densities of comparable flatplate TEGs. Such a low volume power density indicates lower economic feasibility of the radial TEG with expensive inorganic thermoelectric materials. This is also explicitly discussed by presenting the high cost per watt of the radial TEG. It is therefore suggested that radial TEGs with less expensive organic materials may be more acceptable than those with inorganic ones.

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“…Rogers et al has reported that the compliant and stretchable TE materials in the form of coils that can be integrated into the compliant three-dimensional forms (Nan et al, 2018). Some other works have also demonstrated that by the technique of thermoelectric painting, people can achieve the shape-engineering of high-performance TE materials (Sun et al, 2014;Park et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

Printable Thermoelectric Materials and Applications

Liu

Wang

2019

Front. Mater.

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Thermoelectric (TE) materials have been of great importance for the capability of direct energy conversion between heat and electricity. In the past decades, people have developed various methods to enhance the performance of TE materials, which is characterized in terms of the dimensionless figure of merit of ZT. Combined with the advanced techniques of printing, the printable and flexible TE materials have been obtained, which can greatly broaden the application of the TE materials, thus improve the overall energy conversion efficiency. Most importantly, the flexible high performance TE materials-based device can reduce the consume of unrecoverable resources. In this review, we would like to discuss the strategies of enhancing the performance of TE materials. Then, the advanced techniques of printing of TE materials-based device will be involved. Finally, we would suggest some promising materials to enhance the thermoelectric performance and the potential applications in future.

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High-performance shape-engineerable thermoelectric painting

Cited by 139 publications

References 57 publications

Farming thermoelectric paper

Farming thermoelectric paper

On the volume power density of radial thermoelectric generators

Printable Thermoelectric Materials and Applications

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