posted on 2024-03-01, 17:54authored byXiuzhen Li, Jinlong Wang, Yanhua Liu, Tong Zhao, Bin Luo, Tao Liu, Song Zhang, Mingchao Chi, Chenchen Cai, Zhiting Wei, Puyang Zhang, Shuangfei Wang, Shuangxi Nie
As intelligent technology surges
forward, wearable electronics
have emerged as versatile tools for monitoring health and sensing
our surroundings. Among these advancements, porous triboelectric materials
have garnered significant attention for their lightness. However,
these materials face the challenge of improving structural stability
to further enhance the sensing accuracy of triboelectric sensors.
In this study, a lightweight and strong porous cellulosic triboelectric
material is designed by cell wall nanoengineering. By tailoring of
the cell wall structure, the material shows a high mechanical strength
of 51.8 MPa. The self-powered sensor constructed by this material
has a high sensitivity of 33.61 kPa–1, a fast response
time of 36 ms, and excellent pressure detection durability. Notably,
the sensor still enables a high sensing performance after the porous
cellulosic triboelectric material exposure to 200 °C and achieves
real-time feedback of human motion, thereby demonstrating great potential
in the field of wearable electronic devices.