Stretchable Sweat‐Activated Battery in Skin‐Integrated Electronics for Continuous Wireless Sweat Monitoring

Wearable electronics have attracted extensive attentions over the past few years for their potential applications in health monitoring based on continuous data collection and real‐time wireless transmission, which highlights the importance of portable powering technologies. Batteries are the most us...

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Bibliographic Details
Published in:Advanced science Vol. 9; no. 9; pp. e2104635 - n/a
Main Authors: Liu, Yiming, Huang, Xingcan, Zhou, Jingkun, Yiu, Chun Ki, Song, Zhen, Huang, Wei, Nejad, Sina Khazaee, Li, Hu, Wong, Tsz Hung, Yao, Kuanming, Zhao, Ling, Yoo, Woojung, Park, Wooyoung, Li, Jiyu, Huang, Ya, Lam, Hiuwai Raymond, Song, Enming, Guo, Xu, Wang, Yanwei, Dai, Zhenxue, Chang, Lingqian, Li, Wen Jung, Xie, Zhaoqian, Yu, Xinge
Format: Journal Article
Language:English
Published: Germany John Wiley & Sons, Inc 01.03.2022
John Wiley and Sons Inc
Wiley
Subjects:
Biocompatibility
Cotton
Electric Power Supplies
Electrodes
Electrolytes
Electronics
microfluidic system
Oxidation
Scanning electron microscopy
Silicones
Skin
stretchable electronics
Sweat
sweat analysis
sweat‐activated batteries
Wearable Electronic Devices
wireless communication
Zinc
microfluidic system
sweat analysis
stretchable electronics
sweat-activated batteries
wireless communication
ISSN:2198-3844, 2198-3844
Online Access:Get full text
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Summary:Wearable electronics have attracted extensive attentions over the past few years for their potential applications in health monitoring based on continuous data collection and real‐time wireless transmission, which highlights the importance of portable powering technologies. Batteries are the most used power source for wearable electronics, but unfortunately, they consist of hazardous materials and are bulky, which limit their incorporation into the state‐of‐art skin‐integrated electronics. Sweat‐activated biocompatible batteries offer a new powering strategy for skin‐like electronics. However, the capacity of the reported sweat‐activated batteries (SABs) cannot support real‐time data collection and wireless transmission. Focused on this issue, soft, biocompatible, SABs are developed that can be directly integrated on skin with a record high capacity of 42.5 mAh and power density of 7.46 mW cm−2 among the wearable sweat and body fluids activated batteries. The high performance SABs enable powering electronic devices for a long‐term duration, for instance, continuously lighting 120 lighting emitting diodes (LEDs) for over 5 h, and also offers the capability of powering Bluetooth wireless operation for real‐time recording of physiological signals for over 6 h. Demonstrations of the SABs for powering microfluidic system based sweat sensors are realized in this work, allowing real‐time monitoring of pH, glucose, and Na+ in sweat. A stretchable, conformable sweat‐activated battery (SAB) has been developed with high power density (7.46 mW cm−2) and energy capacity (42.5 mAh); it enables lighting 120 lighting emitting diodes (LEDs) for 5 h, and offers enough power to support Bluetooth wireless operation for real‐time recording of physiological signals in state‐of‐art wearable sensors for over 6 h. The SAB is also demonstrated in powering microfluidic system based sweat sensors for real‐time monitoring of pH, glucose, and Na+ in sweat.
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ISSN:2198-3844
2198-3844
DOI:10.1002/advs.202104635