Research on wearable sensing technologies has been gaining considerable attention in the development of portable bio-monitoring devices for personal health. However, traditional energy storage systems with defined size and shape have inherent limitations in satisfying the performance requirements for flexible electronics. To overcome this constraint, three different configurations of flexible asymmetric supercapacitor (FASC) are fabricated on polyester/cellulose blend (PCB) cloth substrate using Ti3C2 nanosheet (NS) and 1T WS2 NS as electrodes, and aqueous pluronic gel as an electrolyte. Benefiting from the 2D material electrodes, the interdigitated FASC configuration exhibits excellent performance, flexibility, cyclic stability, wearability and can be configured into multiple units and shapes, which far exceed that exhibited by the textile-based FASC. Furthermore, the arbitrary (“AFN”) and sandwich (“FLOWER”) configurations Ti3C2 NS/1T WS2 NS FASC can be assembled directly on a PCB cloth substrate, thereby offering good structural integrity coupled with ease of assembly into integrated circuits of different shapes. More specifically, a lightweight, flexible, and wearable bio-monitoring system is developed by integrating force sensing device with interdigitated FASC, which can be used to monitor the physical status of human body during various activities. A potential application of this system in healthcare is successfully demonstrated and discussed.
Bibliographical noteFunding Information:
M.P. acknowledges the financial support of Grant Agency of the Czech Republic (EXPRO: 19?26896X). The pulse monitoring and feet analysis performed in studies involving human participants were in accordance with the ethical standards of the National Research Committee (CPP IDF VI, No. 2014-A01938-39) and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards. Informed consent were obtained from subject-1 (Dr. Huaijuan Zhou) and subject-2 (Dr. Carmen C. Mayorga-Martinez) for feet analysis and Dr. Jayraj Vaghasiya for pulse monitoring.
All Science Journal Classification (ASJC) codes
- Materials Science(all)
- Condensed Matter Physics