Highly Compressible Integrated Supercapacitor-Piezoresistance-Sensor System with CNT-PDMS Sponge for Health Monitoring

作者：Song, Yu; Chen, Haotian; Su, Zongming; Chen, Xuexian; Miao, Liming; Zhang, Jinxin; Cheng, Xiaoliang; Zhang, Haixia^*

来源：Small, 2017, 13(39): 1702091.

DOI：10.1002/smll.201702091

• CNT-PDMS sponge
• compressible system
• health monitor
• piezoresistance sensors
• supercapacitors

Rapid improvement of wearable electronics stimulates the demands for the matched functional devices and energy storage devices. Meanwhile, wearable microsystem requires every parts possessing high compressibility to accommodate large-scale mechanical deformations and complex conditions. In this work, a general carbon nanotube-polydimethylsiloxane (CNT-PDMS) sponge electrode is fabricated as the elementary component of the compressible system. CNT-PDMS sponge performs high sensitivity as a piezoresistance sensor, which is capable of detecting stress repeatedly and owns great electrochemical performance as a compressible supercapacitor which maintains stably under compressive strains, respectively. Assembled with the piezoresistance sensor and the compressible supercapacitor, such highly compressible integrated system can power and modulate the low-power electronic devices reliably. More importantly, attached to the epidermal skin or clothes, it can detect human motions, ranging from speech recognition to breathing record, thus showing feasibility in real-time health monitor and human-machine interfaces.

• 出版日期2017-10-18
• 单位北京大学