High Power Density Body Heat Energy Harvesting

Amin Nozariasbmarz, Ravi Anant Kishore, Bed Poudel, Udara Saparamadu, Wenjie Li, Ricardo Cruz, Shashank Priya

Research output: Contribution to journalArticle

Abstract

Thermoelectric generators (TEGs) can convert body heat into electricity, thereby providing a continuous power source for wearable and implantable devices. For wearables, the low fill factor (area occupied by legs over the TEG base area) TEG modules are relevant as they provide large thermal gradient across the legs and require less material, which reduces the cost and weight. However, TEGs with a fill factor below 15% suffer from reduced mechanical robustness; consequently, commercial modules are usually fabricated with a fill factor in the range of 25-50%. In this study, TEG modules with a low and high fill factor are demonstrated and their performance is compared in harvesting body heat. Fabricated modules demonstrate ∼80% output power enhancement as compared to commercially available designs, resulting in high power density of up to 35 μW/cm2 in a steady state. This enhanced power is achieved by using two-third less thermoelectric materials in comparison to commercial modules. These results will advance the ongoing development of wearable devices by providing a consistent high specific power density source.

Original languageEnglish (US)
JournalACS Applied Materials and Interfaces
DOIs
StateAccepted/In press - Jan 1 2019

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Energy harvesting
Thermal gradients
Electricity
Costs
Hot Temperature

All Science Journal Classification (ASJC) codes

  • Materials Science(all)

Cite this

Nozariasbmarz, Amin ; Kishore, Ravi Anant ; Poudel, Bed ; Saparamadu, Udara ; Li, Wenjie ; Cruz, Ricardo ; Priya, Shashank. / High Power Density Body Heat Energy Harvesting. In: ACS Applied Materials and Interfaces. 2019.
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High Power Density Body Heat Energy Harvesting. / Nozariasbmarz, Amin; Kishore, Ravi Anant; Poudel, Bed; Saparamadu, Udara; Li, Wenjie; Cruz, Ricardo; Priya, Shashank.

In: ACS Applied Materials and Interfaces, 01.01.2019.

Research output: Contribution to journalArticle

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