Bio-inspired ultra-thin microfluidics for soft sweat-activated batteries and skin electronics

Thin, soft, skin electronics have attracted great attention for their use in the fields of healthcare monitoring and human-machine interfaces. The power supply is always one of the key issues in skin electronics, as it provides electrical energy to sensors, wireless communication modules, chips, and...

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Bibliographic Details
Published in:Journal of materials chemistry. A, Materials for energy and sustainability Materials for energy and sustainability, 2022-09, Vol.1 (37), p.19662-1967
Main Authors: Wu, Mengge, Shi, Rui, Zhou, Jingkun, Wong, Tsz Hung, Yao, Kuanming, Li, Jian, Huang, Xingcan, Li, Dengfeng, Gao, Yuyu, Liu, Yiming, Hou, Sihui, Yu, Junsheng, Yu, Xinge
Format: Article
Language:English
Subjects:
Batteries
Biocompatibility
Bluetooth
Electronics
Heart rate
Interfaces
Microfluidics
Signal monitoring
Skin
Skin temperature
Smartphones
Sweat
Telemedicine
Wireless communications
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Summary:Thin, soft, skin electronics have attracted great attention for their use in the fields of healthcare monitoring and human-machine interfaces. The power supply is always one of the key issues in skin electronics, as it provides electrical energy to sensors, wireless communication modules, chips, and so on. However, traditional batteries generally have limitations such as rigid formats, large volume, or even potential safety issues by hazard materials, which might not be applicable for skin electronics. Herein, we present an ultra-thin, soft and biocompatible sweat-activated battery, combining bio-inspired microfluidics with flexible electronic technologies. The sweat-activated battery can collect the human sweat in seconds and yield a power density up to 122 mW cm −2 and a discharge capacity of 8.33 mA h. The sweat-activated battery can provide sufficient power to drive the state-of-the-art wearable electronics for real-time monitoring physiological signals (including heart rate, blood oxygen and skin temperature) and wireless transmission to smartphones via Bluetooth. This work reports a flexible sweat-activated battery integrated with efficient bio-inspired microfluidics that can power biosensors for real-time health monitoring.
ISSN:2050-7488
2050-7496
DOI:10.1039/d2ta01154a