Laser Processing of Crumpled Porous Graphene/MXene Nanocomposites for a Standalone Gas Sensing System

Cheng Zhang, Jinguo Chen, Jindong Gao, Guanglong Tan, Shaobo Bai, Kangwei Weng, Hua Min Chen, Xiaohong Ding, Huanyu Cheng, Yanhui Yang, Jun Wang

科研成果: 期刊稿件文章同行评审

48 引用 (Scopus)

摘要

Integrating wearable gas sensors with energy harvesting and storage devices can create self-powered systems for continuous monitoring of gaseous molecules. However, the development is still limited by complex fabrication processes, poor stretchability, and sensitivity. Herein, we report the low-cost and scalable laser scribing of crumpled graphene/MXenes nanocomposite foams to combine stretchable self-charging power units with gas sensors for a fully integrated standalone gas sensing system. The crumpled nanocomposite designed in island-bridge device architecture allows the integrated self-charging unit to efficiently harvest kinetic energy from body movements into stable power with adjustable voltage/current outputs. Meanwhile, given the stretchable gas sensor with a large response of ∼1% ppm-1 and an ultralow detection limit of ∼5 ppb to NO2/NH3, the integrated system provides real-time monitoring of the exhaled human breath and the local air quality. The innovations in materials and structural designs pave the way for the future development of wearable electronics.

源语言英语
页(从-至)3435-3443
页数9
期刊Nano Letters
23
8
DOI
出版状态已出版 - 26 4月 2023
已对外发布

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