Highly sensitive and stable 3D flexible pressure sensor based on carbon black and multi-walled carbon nanotubes prepared by hydrothermal method

Liu, Chong; Tan, Qing; Deng, Yaqin; Ye, Peilin; Kong, Lingyu; Ma, Xu; Xu, Li; Xu, Yuqing; Qiang, Qinping; Chen, Wenbo; Yang, Zhong; Nikolaevich, Yakovlev Alexey; Zhao, Zhengchun; Zhou, Wei; Liu, Bitao

doi:10.1016/j.coco.2022.101178

Cited by 26 publications

(9 citation statements)

References 19 publications

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“…As demonstrated in Fig. 4 a, like most reported sensors, the current change versus pressure curve of the CNF/CNT/MXene (2:1:7) aerogel piezosensor can be divided into two linear regions [ 48 ]. In the region of 0–200 Pa, the sensitivity of S 1 is 817.3 kPa −1 .…”

Section: Resultsmentioning

confidence: 99%

Nanocellulose-Assisted Construction of Multifunctional MXene-Based Aerogels with Engineering Biomimetic Texture for Pressure Sensor and Compressible Electrode

et al. 2023

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Multifunctional architecture with intriguing structural design is highly desired for realizing the promising performances in wearable sensors and flexible energy storage devices. Cellulose nanofiber (CNF) is employed for assisting in building conductive, hyperelastic, and ultralight Ti3C2Tx MXene hybrid aerogels with oriented tracheid-like texture. The biomimetic hybrid aerogels are constructed by a facile bidirectional freezing strategy with CNF, carbon nanotube (CNT), and MXene based on synergistic electrostatic interaction and hydrogen bonding. Entangled CNF and CNT “mortars” bonded with MXene “bricks” of the tracheid structure produce good interfacial binding, and superior mechanical strength (up to 80% compressibility and extraordinary fatigue resistance of 1000 cycles at 50% strain). Benefiting from the biomimetic texture, CNF/CNT/MXene aerogel shows ultralow density of 7.48 mg cm−3 and excellent electrical conductivity (~ 2400 S m−1). Used as pressure sensors, such aerogels exhibit appealing sensitivity performance with the linear sensitivity up to 817.3 kPa−1, which affords their application in monitoring body surface information and detecting human motion. Furthermore, the aerogels can also act as electrode materials of compressive solid-state supercapacitors that reveal satisfactory electrochemical performance (849.2 mF cm−2 at 0.8 mA cm−2) and superior long cycle compression performance (88% after 10,000 cycles at a compressive strain of 30%).

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Section: Resultsmentioning

confidence: 99%

Nanocellulose-Assisted Construction of Multifunctional MXene-Based Aerogels with Engineering Biomimetic Texture for Pressure Sensor and Compressible Electrode

et al. 2023

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“…This material has good water absorption, excellent elasticity, high porosity, and a significant internal surface area. 35 In this paper, the MXene sponge with a 3D network structure was prepared by a simple ultrasonic mixing method. The preparation process of the T-MXene@MS sensor is shown in Fig.…”

Section: Preparation and Characterization Of The T-mxene@ms Sensormentioning

confidence: 99%

A super water-resistant MXene sponge flexible sensor for bifunctional sensing of physical and chemical stimuli

Qiang

Zhao

et al. 2023

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“…Flexible strain and electronic sensors have captured a great deal of attention due to their broad potential applications in areas such as electric skin, − human movement detection, − health monitoring, , and energy storage. , These sensors can detect biological and mechanical activities and provide feedback through changes in their electrical output . Over the years, a variety of dependable sensor materials have been developed, such as those utilizing carbon, − nanowires, and conductive polymers . However, a major obstacle faced by these sensors is their limited working range, large response time, and susceptibility to rapid conductivity deterioration under repeated large deformations.…”

Section: Introductionmentioning

confidence: 99%

Micelle–Micelle Cross-Linked Highly Stretchable Conductive Hydrogels for Potential Applications of Strain and Electronic Skin Sensors

et al. 2023

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Wearable sensors made of flexible and stretchable hydrogels have garnered significant attention. However, their use has been limited by poor mechanical performance, such as poor toughness, poor self-recovery, and a large response–recovery time. To overcome these limitations, we have developed a novel cross-linking agent-based hydrogel with high stretchability, high toughness, antifatigue properties, and good conductivity. These hydrogels were developed by introducing l-glutamic acid (LGA) into hydrophobically cross-linked polyacrylamide (PAmm) chains. In this system, LGA dynamically cross-linked the micelle–micelle and micelle–polymer chains and greatly regulates the mechanical properties of the hydrogels. The noncovalent synergistic interactions that came with the insertion of LGA enable the hydrogels to achieve high stretchability and high stress values, with fast self-recovery and antifatigue behaviors without the help of foreign stimuli. Additionally, LGA-based hydrogels can function as durable and highly sensitive strain sensors for detecting various mechanical deformations with a fast response–recovery time and high gauge factor value. As a result, the hydrogels have the capability to be designed as wearable strain sensors that are capable of detecting large human joint motions, such as neck twisting, neck bending, and wrist, finger, and elbow movements. Similarly, these hydrogels are capable of monitoring different subtle human motions such as speaking and differentiating between different words, swallowing, and drinking through larynx vibrations. Besides these large and subtle human motions, hydrogels have the ability to differentiate and reproduce different written words with reliability. These LGA-regulated hydrogels have potential applications in electric skins, medical monitoring, soft robotics, and flexible touch panels.

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Highly sensitive and stable 3D flexible pressure sensor based on carbon black and multi-walled carbon nanotubes prepared by hydrothermal method

Cited by 26 publications

References 19 publications

Nanocellulose-Assisted Construction of Multifunctional MXene-Based Aerogels with Engineering Biomimetic Texture for Pressure Sensor and Compressible Electrode

Nanocellulose-Assisted Construction of Multifunctional MXene-Based Aerogels with Engineering Biomimetic Texture for Pressure Sensor and Compressible Electrode

A super water-resistant MXene sponge flexible sensor for bifunctional sensing of physical and chemical stimuli

Micelle–Micelle Cross-Linked Highly Stretchable Conductive Hydrogels for Potential Applications of Strain and Electronic Skin Sensors

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