Conductive hydrogels have risen as a promising material for flexible wearable sensors. However, achieving a hydrogel that simultaneously possesses high mechanical properties, conductivity, self-healing ability, and adhesion remains a challenge. Herein, we developed a dual-network ionic conductive hydrogel (P-P(C-A)-PA) by incorporating poly(vinyl alcohol) and a copolymer of catechol-modified ionic liquid and acrylamide. The optimized hydrogel exhibited outstanding mechanical performance (stress: 883 kPa, strain: 1120%), self-healing efficiency (stress recovery of 58.6% ± 4.6% and toughness recovery of 57.7% ± 5.5%), ionic conductivity (3.91 S/m), and adhesion strength (50 kPa on Ecoflex). The hydrogel-based flexible sensor reliably monitored human motion with rapid and accurate signal response even after self-healing. The hydrogel-based triboelectric nanogenerator showed excellent output performance (180 V, 7.9 μA, and 65 nC), further identifying grasped objects and monitoring finger rehabilitation before and after self-healing. These results highlighted the considerable potential of our hydrogel for applications in advanced electronics.
Hydrogels exhibiting functional properties like mechanical strength, self-healing ability, strong adhesion, and reliable sensing performance remains a major challenge for wearable electronics. Herein, a sustainable biomass-derived CPAT hydrogel was fabricated from carboxymethyl cellulose (CMC), poly(vinyl alcohol) (PVA...
D. Sinha, Nishikanta Singh, Onkarnath Verma et al.· Carbohydrate Polymers· 0 citations
Conductive hydrogels have great potential as sensing materials for wearable flexible electronics; however, their practical applications are often limited by low mechanical strength, poor adhesion, and low self-healing efficiency. To meet the requirements of flexible wearable sensors, in this study we introduced zinc tr...
Kai Wang, Ming-Jie Li, Yi-Ru Kong et al.· Soft Matter· 0 citations
Multifunctional hydrogel-based sensors capable of integrating mechanical adaptability, stable conductivity, and multimodal responsiveness are highly desirable for wearable electronics and intelligent human-machine interfaces. However, achieving synergistic optimization of multi-stimuli responsiveness and stable signal...
Tao Chen, Yi Wang, Yong-Huan Chen et al.· ACS Applied Materials and In...· 0 citations
Conductive hydrogels with simultaneous high stretchability, robust mechanical toughness, and reliable strain-sensing sensitivity remain challenging to fabricate, particularly without toxic chemical initiators or cross-linkers. To address this, a multifunctional poly(acrylic acid)/gallium-bacterial cellulose (PAA/Ga-B...
Qian-Qian Wang, Lin Zhong, He-Li Cheng et al.· ACS Applied Polymer Material...· 1 citation
Advanced human-machine interface technology demands flexible wearable electronics, including sensors and energy storage. Hydrogels, crucial to these devices, are often limited by poor toughness, cracking under strain, and low ionic conductivity. To address these issues, a high-performance composite hydrogel, PAAKS (as-...
Rui Shen, Jia-Wei Guo, Hong Ruan et al.· ACS Applied Materials and In...· 0 citations
Hydrogels have been widely used in tissue engineering, soft robotics, and wearable electronics. However, developing hydrogels that simultaneously possess high strength, high stretchability, and good conductivity to meet diverse application requirements remains a significant challenge. In this study, a strategy involv...
