Enhancing anti‐thermal hysteresis ability, response stability and sensitivity of polymer humidity sensor by in‐situ crosslinking curing method

Hu, Xuqi; Yu, Xiaohui; Xiong, Xiang; Li, Siyi; Jin, Tao; Chen, Yufang

doi:10.1002/app.53868

Cited by 3 publications

(3 citation statements)

References 30 publications

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“…Additionally, one lattice plane of 0.26 nm is observed in HRTEM images, corresponding to (221) planes of the C10-ZnSn(OH) 6 , indicating an excellent crystallinity of the octahedron (Figure 4b,c). This analysis is consistent with the SEM and XRD results, further confirming the successful preparation of ZnSn(OH) 6 .…”

Section: Structure and Morphology Analysissupporting

confidence: 88%

“…The possible humidity sensing mechanism of sensors is analyzed using the AC complex impedance spectrum with simulated equivalent circuits. The study results provide evidence to explore and design ZnSn(OH) 6 -based humidity-sensitive materials.…”

Section: Introductionmentioning

confidence: 79%

“…As the core of humidity sensors, the research has been focused on developing sensitive substrates, including metal oxides, polymers, natural nanoclay, cellulose, metal hydroxides, and some two-dimensional materials (black phosphorus, black arsenic), etc. [ 5 , 6 , 7 , 8 , 9 , 10 , 11 ].…”

Section: Introductionmentioning

confidence: 99%

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Designing High Performance Carbon/ZnSn(OH)6-Based Humidity Sensors

Zhang,

Jia,

Wang

et al. 2024

Sensors

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In this work, pure phase and carbon/ZnSn(OH)6 samples were synthesized by a hydrothermal method. The composite sample’s structure, morphology, and functional groups were investigated by X-ray diffraction, field-emission scanning electron microscopy, transmission electron microscopy, and Fourier transform infrared spectroscopy. Subsequently, ZnSn(OH)6 samples were modified with different carbon contents, and their humidity-sensing properties were investigated. The introduction of carbon increased the specific surface area of pure ZnSn(OH)6 samples, thus significantly improving the sensors’ humidity sensing response. The C10-ZnSn(OH)6 sensor exhibited a high response, up to three orders of magnitude, a humidity hysteresisof 13.5%, a fast response time of 3.2 s, and a recovery time of 24.4 s. The humidity sensor’s possible humidity sensing mechanism was also analyzed using the AC complex impedance puissance method with a simulated equivalent circuit. These results revealed that ZnSn(OH)6 can effectively detect ambient humidity and that the introduction of carbon significantly improves its humidity-sensing performance. The study provides an effective strategy for understanding and designing ZnSn(OH)6-based humidity sensors.

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Section: Structure and Morphology Analysissupporting

confidence: 88%

Section: Introductionmentioning

confidence: 79%

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Designing High Performance Carbon/ZnSn(OH)6-Based Humidity Sensors

Zhang,

Jia,

Wang

et al. 2024

Sensors

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Carbon nanotubes for optimizing response stability and speed of acrylate hybrid copolymers humidity sensor

Yu,

Hu,

et al. 2024

Polymer Composites

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Carbon nanotubes (CNTs) are one‐dimensional nanomaterials with a hollow structure, high specific surface area and excellent chemical conductivity, which show great potential for application in the field of humidity‐sensitive responsive materials and humidity sensors. In this paper, CNTs were composited with a hybrid copolymer (HAC) of octavinyl POSS/acrylate to prepare the hybrid copolymer composites HAC/CNTs and their humidity sensors, which demonstrated exceptional thermal stability and fast response speed. Among them, acrylic resin serves as a humidity‐sensitive material; POSS introduce a stable three‐dimensional cage skeleton structure to the material; and CNTs are used as conductive fillers, which further enhance the stability of the material, as well as improve the sensitivity and humidity‐sensitive response speed of the material. The experimental findings indicate that the HAC/8.0% CNTs composite material exhibits a remarkable sensitivity of 119.94 KΩ/%RH within the humidity range of 11%–95%RH. Compared with HAC, HAC/8.0% CNTs demonstrate a significant reduction in response/recovery time from 16.0 s/70.0 s to 0.8 s/80.0 s, representing a considerable improvement in response speed; the wet hysteresis is reduced from 0.88 %RH to 0.77 %RH; and the temperature change coefficient is reduced from 0.035 %RH/°C to 0.008 %RH/°C over the temperature range of 20–60°C, indicating superior stability against temperature variation. Meanwhile, the humidity response mechanism of HAC/CNTs was discussed by using complex impedance spectrum. The hybrid copolymer composites, HAC/CNTs, that were prepared in this study have tremendous potential in the development of advanced, high‐performance, and miniaturizable humidity sensing technologies.Highlights A hybrid copolymer composite humidity‐sensitive material HAC/CNTs is prepared. HAC/CNTs are compounds consisting of CNTs and POSS/acrylate hybrid copolymer. POSS improve the skeleton structural stability of acrylic resins. CNTs enhance the sensitivity and response speed of humidity sensor. The HAC/8.0% CNTs have higher response stability and faster response speed.

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Ti3C2-MXene used to enhance response/recovery speed and thermal stability of acrylate copolymer humidity sensor under abnormal temperature changes

Hu,

Yu,

et al. 2024

European Polymer Journal

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Enhancing anti‐thermal hysteresis ability, response stability and sensitivity of polymer humidity sensor by in‐situ crosslinking curing method

Cited by 3 publications

References 30 publications

Designing High Performance Carbon/ZnSn(OH)6-Based Humidity Sensors

Designing High Performance Carbon/ZnSn(OH)6-Based Humidity Sensors

Carbon nanotubes for optimizing response stability and speed of acrylate hybrid copolymers humidity sensor

Ti3C2-MXene used to enhance response/recovery speed and thermal stability of acrylate copolymer humidity sensor under abnormal temperature changes

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