Flexible thermoelectric power generation system based on rigid inorganic bulk materials

Yoomin Eom, Dimuthu Wijethunge, Hwanjoo Park, Sang Hyun Park, Woochul Kim

Research output: Contribution to journalArticlepeer-review

79 Citations (Scopus)


Herein, we demonstrate that conventional inorganic materials can be used in wearable systems despite their bulky and rigid nature. In particular, we proposed a bracelet-like modular design of a thermoelectric (TE) module with a heat sink made of rigid inorganic bulk materials. This device is referred to as the flexible TE system (FTES). Experiments and theoretical analyses were performed to verify whether the FTES performs like a conventional TE module even though it is flexible and wearable. In addition, we performed experiments while the FTES was worn on a subject's wrist for body heat harvesting. The FTES produced a usable power output even when the wearer was at rest. When the subject was running at a slow pace, the FTES generated approximately 80 μW. Our analyses indicate that this value can be further enhanced through future design improvements. Nevertheless, based on the experimental and analytical results, the FTES can deliver a usable power output. This research therefore demonstrates the possibility of using high-performance bulk materials in the design of wearable devices.

Original languageEnglish
Pages (from-to)649-656
Number of pages8
JournalApplied Energy
Publication statusPublished - 2017

Bibliographical note

Funding Information:
This work was supported by a National Research Foundation of Korea (NRF) grant funded by the Korean Government (MSIP) ( NRF-2015R1A5A1036133 ).

Publisher Copyright:
© 2017 Elsevier Ltd

All Science Journal Classification (ASJC) codes

  • Building and Construction
  • Mechanical Engineering
  • Energy(all)
  • Management, Monitoring, Policy and Law


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