TY - JOUR
T1 - Thermoelectric generator with a high integration density for portable and wearable self-powered electronic devices
AU - Van Toan, Nguyen
AU - Thi Kim Tuoi, Truong
AU - Van Hieu, Nguyen
AU - Ono, Takahito
N1 - Funding Information:
Part of this work was performed in the Micro/Nanomachining Research Education Center (MNC) of Tohoku University. This work was supported by Cabinet Office, Government of Japan, Cross-ministerial Strategic Innovation Promotion Program (SIP), (funding agency: The New Energy and Industrial Technology Development Organization, NEDO) and also supported in part by JSPS KAKENHI for Young Scientists (Grant number: 20K15147).
Publisher Copyright:
© 2021 Elsevier Ltd
PY - 2021/10/1
Y1 - 2021/10/1
N2 - This work reports thermoelectric generators (TEGs) for portable and wearable self-powered electronic devices. Two kinds of TEGs, including low (device #1) and high (device #2) integrated number of thermoelectric elements, employing a high performance thermoelectric material fabricated by an assembly technology which are evaluated and compared against each other. Device #1 consists of 17 pairs of thermoelectric elements with dimensions of 1 mm × 1 mm × 2 mm while device #2 has 127 pairs of thermoelectric elements with dimensions of 0.4 mm × 0.4 mm × 2 mm. Both devices are fabricated on the same substrate of 15 mm × 15 mm. Maximum output powers for devices #1 and #2 are obtained as 10.1 mW and 33.9 mW at temperature difference ΔT of 75 °C, respectively, while at low ΔT = 5 °C, those of devices #1 and #2 are 43 µW and 91 µW, respectively. Fabricated TEGs show higher performance in comparison to the recent related works. Moreover, the harvested energy from the fabricated TEG can be stored in a rechargeable battery via a DC-DC converter. The output of the DC-DC converter reaches 2.8 V and 4 V at ΔT = 2 °C and 8 °C, respectively, which corresponds to the DC-DC electronic conversion efficiency ηDC-DC is 8.1% and 23.3%, respectively. The fabricated TEG as a power source for a calculator as well as a twist watch has been demonstrated successfully. The investigation in this work indicated that the fabricated TEG possesses a high potential for portable and wearable self-powered electronic devices.
AB - This work reports thermoelectric generators (TEGs) for portable and wearable self-powered electronic devices. Two kinds of TEGs, including low (device #1) and high (device #2) integrated number of thermoelectric elements, employing a high performance thermoelectric material fabricated by an assembly technology which are evaluated and compared against each other. Device #1 consists of 17 pairs of thermoelectric elements with dimensions of 1 mm × 1 mm × 2 mm while device #2 has 127 pairs of thermoelectric elements with dimensions of 0.4 mm × 0.4 mm × 2 mm. Both devices are fabricated on the same substrate of 15 mm × 15 mm. Maximum output powers for devices #1 and #2 are obtained as 10.1 mW and 33.9 mW at temperature difference ΔT of 75 °C, respectively, while at low ΔT = 5 °C, those of devices #1 and #2 are 43 µW and 91 µW, respectively. Fabricated TEGs show higher performance in comparison to the recent related works. Moreover, the harvested energy from the fabricated TEG can be stored in a rechargeable battery via a DC-DC converter. The output of the DC-DC converter reaches 2.8 V and 4 V at ΔT = 2 °C and 8 °C, respectively, which corresponds to the DC-DC electronic conversion efficiency ηDC-DC is 8.1% and 23.3%, respectively. The fabricated TEG as a power source for a calculator as well as a twist watch has been demonstrated successfully. The investigation in this work indicated that the fabricated TEG possesses a high potential for portable and wearable self-powered electronic devices.
KW - Electrochemical deposition
KW - Portable and wearable self-powered electronic devices
KW - Thermoelectric generator
UR - http://www.scopus.com/inward/record.url?scp=85111526707&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85111526707&partnerID=8YFLogxK
U2 - 10.1016/j.enconman.2021.114571
DO - 10.1016/j.enconman.2021.114571
M3 - Article
AN - SCOPUS:85111526707
VL - 245
JO - Energy Conversion and Management
JF - Energy Conversion and Management
SN - 0196-8904
M1 - 114571
ER -