Engineering and Technology

Humidity-sensitive chemoelectric flexible sensors based on metal-air redox reaction for health management

S. Li, Y. Zhang, et al.

Discover the innovation of a self-powered chemoelectric humidity sensor that leverages a metal-air redox reaction, as reported by a team of researchers led by Shuo Li and his colleagues. This groundbreaking device, featuring a silk fibroin and LiBr gel matrix, delivers remarkable sensitivity and rapid response times, with transformative applications in health management.

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Abstract

This work presents a self-powered chemoelectric humidity sensor based on the metal-air redox reaction. A silk fibroin (SF) and LiBr gel matrix containing aligned graphene oxide (GO) flakes serves as the electrolyte. The sensor exhibits high sensitivity (0.09 µA/s/1%), fast response (1.05 s), and quick recovery (0.80 s). Proof-of-concept applications include a respiratory monitoring system and a non-contact human-machine interface, highlighting its potential in health management.

Publisher

Nature Communications

Published On

Sep 15, 2022

Authors

Shuo Li, Yong Zhang, Xiaoping Liang, Haomin Wang, Haojie Lu, Mengjia Zhu, Huimin Wang, Mingchao Zhang, Xinping Qiu, Yafeng Song, Yingying Zhang

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