Temperature-adaptable pressure sensors based on MXene-coated GO hierarchical aerogels with superb detection capability

Chen, Tiandi; Yang, Gaochuang; Li, Yiyun; Li, Zhangpeng; Ma, Limin; Yang, Shengrong; Wang, Jinqing

doi:10.1016/j.carbon.2022.08.002

Cited by 26 publications

(24 citation statements)

References 51 publications

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“…Pressure sensors are the most researched flexible sensors, which can detect human motion behavior and can simulate the human sense of touch, and currently have prominent applications in wearable devices, human–computer interaction, and electronic skin. [ 185 ] Gas sensors and electrochemical sensors are capable of monitoring toxic gases and substances in the environment and can be used for environmental monitoring and food safety testing. [ 186 ] Temperature sensors, humidity sensors, and optical sensors can be used in the preparation of smart devices and also have application attempts in multifunctional wearable devices.…”

Section: Classification Of Mxene‐based Flexible Sensorsmentioning

confidence: 99%

MXene‐Based Flexible Sensors: Materials, Preparation, and Applications

Han

Yan

et al. 2023

Adv Materials Technologies

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The rational design and applications of MXene-based materials have yielded remarkable progress in flexible sensors, including wearable devices, soft robots, and smart medical equipment. The emerging MXene and substrate materials can be precisely engineered to improve the mechanical properties and sensing sensitivity of the sensors, opening up a wider range of application possibilities for MXene-based sensors. Therefore, a systematic and comprehensive review summarizing the progress of MXene-based sensor research based on these backgrounds is necessary. First, we discuss the basic structure of MXene materials and introduce the flexible substrate materials for MXene-based flexible sensors in detail. Then, we also discuss the different preparation methods of MXene-based sensors, describe the classifications, and highlight the applications of MXene-based flexible sensors in various scenarios. Finally, we identify the challenges that need to be overcome to accelerate the development of MXene-based materials in flexible sensing. This review provides a comprehensive and systematic insight into MXene-based flexible sensors and it is expected that this review will contribute to the development of higher performance MXene-based flexible sensors.

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Section: Classification Of Mxene‐based Flexible Sensorsmentioning

confidence: 99%

MXene‐Based Flexible Sensors: Materials, Preparation, and Applications

Han

Yan

et al. 2023

Adv Materials Technologies

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“…Most studies have used interlayer composite materials to increase layer spacing, attach sensitive materials to the microstructured surface, and construct aerogels to utilize the properties of the metal surface. − However, interlayer spacing expansions and attachments to the microstructure surface would generate limited electron channels. Additionally, compatibility with other materials and the complexity of the preparation process must be considered, which may limit improvements to the performance of the pressure sensor. − Aerogels with rich porous network structures and excellent mechanical properties are mostly light and stable, which act as suitably sensitive layers for pressure sensors. − However, conventional aerogel preparation methods are difficult to achieve precise structural control and require complex processes and cycles. Therefore, there is an urgent need to improve the aerogel preparation process to precisely control the structure and utilize the excellent surface properties of MXenes.…”

Section: Introductionmentioning

confidence: 99%

Maximizing Electron Channels Enabled by MXene Aerogel for High-Performance Self-Healable Flexible Electronic Skin

et al. 2023

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Among the increasingly popular miniature and flexible smart electronics, two-dimensional materials show great potential in the development of flexible electronics owing to their layered structures and outstanding electrical properties. MXenes have attracted much attention in flexible electronics owing to their excellent hydrophilicity and metallic conductivity. However, their limited interlayer spacing and tendency for self-stacking lead to limited changes in electron channels under external pressure, making it difficult to exploit their excellent surface metal conductivity. We propose a strategy for rapid gas foaming to construct interlayer tunable MXene aerogels. MXene aerogels with rich interlayer network structures generate maximized electron channels under pressure, facilitating the effective utilization of the surface metal properties of MXene; this forms a self-healable flexible pressure sensor with excellent sensing properties such as high sensitivity (1,799.5 kPa–1), fast response time (11 ms), and good cycling stability (>25,000 cycles). This pressure sensor has applications in human body detection, human–computer interaction, self-healing, remote monitoring, and pressure distribution identification. The maximized electron channel design provides a simple, efficient, and scalable method to effectively exploit the excellent surface metal conduction of 2D materials.

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“…However, the mechanical properties of most aerogel sensors will greatly degrade under extreme conditions, typically at extremely high or low temperatures, with obvious brittleness and poor compressive resilience, [9][10][11] which fail to meet the application requirements of high-performance sensors, such as high sensitivity, fast response ability, and excellent cycling stability. 12,13 Besides, research on the performance and application of aerogel sensors under extreme conditions is also insufficient. For these reasons, it is urgent to develop an extreme condition-resistant aerogel sensor.…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, other components must be introduced to balance the electrostatic repulsive force and the bonding interactions during the assembly process of MXene nanosheets. [28][29][30] At present, small molecules, 31,32 graphene oxide (GO), 12,33,34 polymers, [35][36][37][38] and bers 13,39,40 have been adopted to improve the mechanical properties of MXene aerogels. Specically, bers have become the focus of research in recent years due to their easy surface modication, good chemical stability, and excellent mechanical and thermal properties.…”

Section: Introductionmentioning

confidence: 99%