1. A multifunctional nanocellulose-based hydrogel for strain sensing and self-powering applications.
- Author
-
Wang B, Dai L, Hunter LA, Zhang L, Yang G, Chen J, Zhang X, He Z, and Ni Y
- Subjects
- Acrylic Resins chemistry, Adhesives chemistry, Elastic Modulus, Electric Conductivity, Graphite chemistry, Humans, Nitrogen Compounds chemistry, Stress, Mechanical, Tensile Strength, Bioelectric Energy Sources, Cellulose chemistry, Hydrogels chemistry, Nanocomposites chemistry, Wearable Electronic Devices
- Abstract
Ionic conductive hydrogel with multifunctional properties have shown promising application potential in various fields, including electronic skin, wearable devices and sensors. Herein, a highly stretchable (up to 2800% strain), tough, adhesive ionic conductive hydrogel are prepared using cationic nanocellulose (CCNC) to disperse/stabilize graphitic carbon nitride (g-C
3 N4 ), forming CCNC-g-C3 N4 complexes and in situ radical polymerization process. The ionic interactions between CNCC and g-C3 N4 acted as sacrificial bonds enabled highly stretchability of the hydrogel. The hydrogel showed high sensitivity (gauge factor≈5.6, 0-1.6% strain), enabling the detection of human body motion, speech and exhalation. Furthermore, the hydrogel based self-powered device can charge 2.2 μF capacitor up to 15 V from human motion. This multifunctional hydrogel presents potential applications in self-powered wearable electronics., (Copyright © 2021 Elsevier Ltd. All rights reserved.)- Published
- 2021
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