Coin-size coiled-up polymer foil thermoelectric power generator for wearable electronics

Weber, Josef; Potje‐Kamloth, Karin; Haase, Frank; Detemple, P.; Völklein, F.; Doll, Theodor

doi:10.1016/j.sna.2006.04.054

Cited by 194 publications

(143 citation statements)

References 5 publications

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“…Opportunities exist to implement the technology in energy harvesting or scavenging systems, for example, commercial autonomous sensors are mainly powered by primary batteries that need to be replaced, hence, it can become the largest and most expensive part of the system. Exploiting temperature differences available in nature and in/on artificial objects can be used to power autonomous devices, and TE power generators that use body heat as an energy source are appropriate for powering low-energy consumers [57] . The Seiko ThermicTM wristwatch is a good example.…”

Section: Seebeck Effect Applicationsmentioning

confidence: 99%

An Overview of Advanced Chalcogenide Thermo- electric Materials and Their Applications

Tesfaye¹

2018

JERA

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Thermoelectricity is a strong scientific and technological interest due to its wide application ranging from clean energy producing to photon sensing devices. Recent developments in theoretical studies on the thermoelectric (TE) effects as well as the newly discovered thermoelectric materials provide new opportunities for several applications. Though the scale of production is limited, thermoelectric technology provides an alternative to traditional methods of power generation, heating and cooling systems. TE technologies can be used in power generation, heating and cooling applications. They potentially offer significant energy savings through waste heat recovery and augmented cooling. This article critically discusses the current progress in chalcogenide TE materials and the advantages and limitations associated with the TE technologies. The need for new materials discoveries from the point of view of achieving higher figure-of-merit combined with thermal stabilities in intermediate-and hightemperature Peltier and Seebeck effects applications is also emphasized. Besides, this article aims to evaluate the main features of recently characterized multicomponent chalcogenide ionic compounds with high thermal stabilities as potential TE materials to harvest electric power from high-temperature heat flux via thermoelectricity.

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Section: Seebeck Effect Applicationsmentioning

confidence: 99%

An Overview of Advanced Chalcogenide Thermo- electric Materials and Their Applications

Tesfaye¹

2018

JERA

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“…54 Nonetheless, some research institutes are looking into methods as to how to apply Bi, Te or Sb containing inks on flexible substrates in the higher 49 , as well as lower temperature range. 29,55 …”

Section: Bi and Sb Containing Printing Inksmentioning

confidence: 99%

Screen Printed Thermoelectric Devices

Willfahrt¹

2014

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Thermoelectric generators (TEG) directly convert heat energy into electrical energy. The impediments as to why this technology has not yet found extensive application are the low conversion efficiency and high costs per watt. On the one hand, the manufacturing process is a cost factor. On the other, the high--priced thermoelectric (TE) materials have an enormous impact on the costs per watt. In this thesis both factors will be examined: the production process and the selection of TE materials. Technical screen printing is a possible way of production, because this method is very versatile with respect to the usable materials, substrates as well as printing inks. The organic conductor PEDOT:PSS offers reasonable thermoelectric properties and can be processed very well in screen printing. It was demonstrated by prototypes of fully printed TEGs that so--called vertical printed TEGs are feasible using standard graphic arts industry processes. In addition, the problems that occur with print production of TEGs are identified. Finally, approaches to solve these problems are discussed.

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“…According to [8,9], a typical heat transfer coefficient between human skin and the module is estimated at: h B ∼ = 20 to 100 W m −2 K −1 . This figure results, for the experimental module, in a thermal contact resistance for the hot side of:…”

Section: Conduction Resistance Between the Module And The Internal Bodymentioning

confidence: 99%

Thermoelectric generator placed on the human body: system modeling and energy conversion improvements

Lossec

Multon

Ahmed

et al. 2010

Eur. Phys. J. Appl. Phys.

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Abstract. This paper focuses on the production of electricity using a thermoelectric generator placed on the human body connected to a dc-dc converter. The small difference in temperature between the hot heat source (e.g. the human body, T b = 37• C) and the cold heat source (e.g. ambient air, Ta = 22• C), associated with a poor quality thermal coupling (mainly with the cold source), leads to a very low temperature gradient at the thermoelectric generator terminals and hence low productivity. Under these use conditions, the present article proposes an analysis of various ways to improve productivity given a surface capture system. Furthermore, we demonstrated, in this particular context, that maximizing the recovered electric power proves to be a different problem from that of maximizing efficiency, e.g. the figure of merit Z. We therefore define a new factor ZE, depending on the physical characteristics of thermoelectric materials, that maximizes electric power in the particular case where the thermal coupling is poor. Finally, this study highlights the benefit of sub-optimization of the power extracted from the thermoelectric generator to further improve efficiency of the overall system. We show that, given the conversion efficiency of the dc-dc converter, the maximum power point of the overall system is no more reached when the output voltage of the thermoelectric generator is equal to half of its electromotive force.

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Coin-size coiled-up polymer foil thermoelectric power generator for wearable electronics

Cited by 194 publications

References 5 publications

An Overview of Advanced Chalcogenide Thermo- electric Materials and Their Applications

An Overview of Advanced Chalcogenide Thermo- electric Materials and Their Applications

Screen Printed Thermoelectric Devices

Thermoelectric generator placed on the human body: system modeling and energy conversion improvements

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