TY - JOUR
T1 - Multi-deformable piezoelectric energy nano-generator with high conversion efficiency for subtle body movements
AU - Bae, Jihoon
AU - Song, Jinkyu
AU - Jeong, Wooseong
AU - Nandanapalli, Koteeswara Reddy
AU - Son, Nayoung
AU - Zulkifli, Nora Asyikin Binti
AU - Gwon, Gihyeok
AU - Kim, Mijin
AU - Yoo, Seungsun
AU - Lee, Hyeokjun
AU - Choi, Hyeokjoo
AU - Lee, Seonmin
AU - Cheng, Huanyu
AU - Kim, Cheolgi
AU - Jang, Kyung In
AU - Lee, Sungwon
N1 - Funding Information:
This research was supported by the National Research Foundation of Korea [grant numbers 2018R1A5A1025511 & 2020R1F1A1075031 ]; the American Chemical Society Petroleum Research Fund [grant number 59021-DNI7 ].
Publisher Copyright:
© 2022
PY - 2022/6/15
Y1 - 2022/6/15
N2 - Wearable devices for remote medical systems require a reliable power supply to enable full operation during long-term processes. Piezoelectric generators are promising energy sources that use human body movements to generate energy. The wearable device should be able to easily deform with tiny skin deformations to achieve continual energy generation from standard body movements. However, conventional piezoelectric devices cannot deform sufficiently in response to small movements, resulting in an extremely low energy-conversion efficiency when mounted on the human skin. In this study, we report on an ultrathin piezoelectric energy nano-generator (U-PENG) based on poly(vinylidene fluoride-trifluoroethylene). Owing to their thin structure (4 µm), the proposed U-PENGs conformally adhere to soft human skin and generate energy from subtle movements, such as eye blinking and breathing. These novel devices provide energy conversion efficiency of ~18.85%, which is ~971% higher than thicker samples with identical structures. Owing to their ultrathin structure, high efficiency, and excellent skin attachability, U-PENGs can be integrated with biodevices for use as power sources.
AB - Wearable devices for remote medical systems require a reliable power supply to enable full operation during long-term processes. Piezoelectric generators are promising energy sources that use human body movements to generate energy. The wearable device should be able to easily deform with tiny skin deformations to achieve continual energy generation from standard body movements. However, conventional piezoelectric devices cannot deform sufficiently in response to small movements, resulting in an extremely low energy-conversion efficiency when mounted on the human skin. In this study, we report on an ultrathin piezoelectric energy nano-generator (U-PENG) based on poly(vinylidene fluoride-trifluoroethylene). Owing to their thin structure (4 µm), the proposed U-PENGs conformally adhere to soft human skin and generate energy from subtle movements, such as eye blinking and breathing. These novel devices provide energy conversion efficiency of ~18.85%, which is ~971% higher than thicker samples with identical structures. Owing to their ultrathin structure, high efficiency, and excellent skin attachability, U-PENGs can be integrated with biodevices for use as power sources.
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U2 - 10.1016/j.nanoen.2022.107223
DO - 10.1016/j.nanoen.2022.107223
M3 - Article
AN - SCOPUS:85127495629
SN - 2211-2855
VL - 97
JO - Nano Energy
JF - Nano Energy
M1 - 107223
ER -
