High-strength MXene sheets through interlayer hydrogen bonding for self-healing flexible pressure sensor

Cheng, Yongfa; Xie, Yimei; Cao, Honghao; Li, Li; Liu, Zunyu; Yan, Shuwen; Ma, Yanan; Liu, Weijie; Yang, Yue; Wang, Jianbo; Gao, Yuan; Li, Luying

doi:10.1016/j.cej.2022.139823

Cited by 51 publications

(24 citation statements)

References 45 publications

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“…where 3 0 refers to the vacuum dielectric constant, d 0 is the effective thickness constant, which is dened as the sum of the ratio of the thickness of all dielectric materials between the two electrodes to their relative dielectric constants, and n(t) is the displacement rate of the electrodes. The variation of V OC and I SC under different external forces can be well understood from eqn (3) and (5). There are two main reasons for this.…”

Section: Performance Evaluation Of Sh-tengsmentioning

confidence: 99%

“…This is similar to previous research results. 65 Since the frequency of the external force has no effect on the charge density and the maximum distance between the two substrates, it can be seen from eqn (3) that the frequency change does not affect the maximum V OC , while the frequency will lead to an increase in n. According to eqn (5), the I SC will also increase.…”

Section: Performance Evaluation Of Sh-tengsmentioning

confidence: 99%

“…Conventional polymeric materials are difficult to meet these requirements due to their limited self-healing capabilities and poor recongurability. However self-healing materials can repair internal and external damage, thus improving the reliability and lifetime of materials and reducing maintenance costs, 2,3 being widely used in electronic skins, 4 exible sensors, 5,6 humancomputer interaction, 7 and supercapacitors. 8,9 Over the decades, an increasing number of self-healing polymers have been developed based on reversible covalent bonds (e.g., Diels-Alder (DA) reactions, 10,11 metal-ligand coordination, 12,13 imine bonds, 14 boroxine, 15 etc.)…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Ethanol-assisted room-temperature rapid self-healing polydimethylsiloxane-polyurea/carbon composite elastomers for energy harvesters and smart sensors

Du,

Wang,

et al. 2024

J. Mater. Chem. A

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Section: Performance Evaluation Of Sh-tengsmentioning

confidence: 99%

Section: Performance Evaluation Of Sh-tengsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Ethanol-assisted room-temperature rapid self-healing polydimethylsiloxane-polyurea/carbon composite elastomers for energy harvesters and smart sensors

Du,

Wang,

et al. 2024

J. Mater. Chem. A

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“…The self-healing of polymer-based pressure sensors becomes important for decreasing the cost of reparation. Li and coworkers demonstrated a membrane [238] of aramid fiber/MXene composite by vacuum filtration. The aramid fiber/MXene membrane shows good retention of complete membrane, i.e., foldable capability, while pure MXene membrane break into pieces after several times folding.…”

Section: Mxene-based Piezoresistive Sensorsmentioning

confidence: 99%

Toward Smart Sensing by MXene

Huang

Peng

et al. 2022

Small

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MXene is typically exfoliated by selective etching the A layer of MAX phase. [1] One example of MXene, Ti 3 C 2 F x , satisfies the stoichiometric ratio of n + 1/n, in which M, X, and T stand for transition metals, carbon or nitrogen, terminal groups at surfaces, respectively. The MXene has exhibited extraordinary electrical, [2][3][4] optical, [5] mechanical, [6][7][8] and electrochemical properties [9] since its first discovery, [10] which has become an emerging material for sensing, [11,12] communication, [13,14] energy, [15,16] environmental, [17] and healthcare applications. [18][19][20] There are many reviews existing for electrochemical energy storage, including supercapacitors, lithium ion batteries, [21][22][23] sodium ion batteries, zinc ion batteries, [24][25][26] lithium-sulfur batteries, and energy conversions, [27][28][29] includingThe Internet of Things era has promoted enormous research on sensors, communications, data fusion, and actuators. Among them, sensors are a prerequisite for acquiring the environmental information for delivering to an artificial data center to make decisions. The MXene-based sensors have aroused tremendous interest because of their extraordinary performances. In this review, the electrical, electronic, and optical properties of MXenes are first introduced. Next, the MXene-based sensors are discussed according to the sensing mechanisms such as electronic, electrochemical, and optical methods. Initially, biosensors are introduced based on chemiresistors and field-effect transistors. Besides, the wearable pressure sensor is demonstrated with piezoresistive devices. Third, the electrochemical methods include amperometry and electrochemiluminescence as examples. In addition, the optical approaches refer to surface plasmonic resonance and fluorescence resonance energy transfer. Moreover, the prospects are delivered of multimodal data fusion toward complicated human-like senses. Eventually, future opportunities for MXene research are conveyed in the new material discovery, structure design, and proof-of-concept devices.

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“…Moreover, the water molecules act as a plasticizer to regulate the mechanical performance of the system as well as influence the conductivity of the material. [6][7][8][9] Although ionotronics are available in various forms, including membranes, [10,11] gels, and foams, [12] ionotronic fibers (IFs) are the most amenable for applications in wearable devices, such as sensors [13,14] and flexible optoelectronic displays. [15,16] In general, these devices require deformable, stretchable, and resilient materials that can be easily incorporated into other flat or textured wearable fabric platforms.…”

Section: Introductionmentioning

confidence: 99%

Biomimetic Spun Silk Ionotronic Fibers for Intelligent Discrimination of Motions and Tactile Stimuli

Cao

et al. 2023

Advanced Materials

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Innovation in the ionotronics field has significantly accelerated the development of ultraflexible devices and machines. However, it is still challenging to develop efficient ionotronic‐based fibers with necessary stretchability, resilience, and conductivity due to inherent conflict in producing spinning dopes with both high polymer and ion concentrations and low viscosities. Inspired by the liquid crystalline spinning of animal silk, this study circumvents the inherent tradeoff in other spinning methods by dry spinning a nematic silk microfibril dope solution. The liquid crystalline texture allows the spinning dope to flow through the spinneret and form free‐standing fibers under minimal external forces. The resultant silk‐sourced ionotronic fibers (SSIFs) are highly stretchable, tough, resilient, and fatigue‐resistant. These mechanical advantages ensure a rapid and recoverable electromechanical response of SSIFs to kinematic deformations. Further, the incorporation of SSIFs into core–shell triboelectric nanogenerator fibers provides outstanding stable and sensitive triboelectric response to precisely and sensitively perceive small pressures. Moreover, by implementing a combination of machine learning and Internet of Things techniques, the SSIFs can sort objects made of different materials. With these structural, processing, performance, and functional merits, the SSIFs prepared herein are expected to be applied in human–machine interfaces.

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High-strength MXene sheets through interlayer hydrogen bonding for self-healing flexible pressure sensor

Cited by 51 publications

References 45 publications

Ethanol-assisted room-temperature rapid self-healing polydimethylsiloxane-polyurea/carbon composite elastomers for energy harvesters and smart sensors

Ethanol-assisted room-temperature rapid self-healing polydimethylsiloxane-polyurea/carbon composite elastomers for energy harvesters and smart sensors

Toward Smart Sensing by MXene

Biomimetic Spun Silk Ionotronic Fibers for Intelligent Discrimination of Motions and Tactile Stimuli

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