High strength and anti‐freezing piezoresistive pressure sensor based on a composite gel

Tie, Jianfei; Mao, Zhiping; Zhang, Linping; Zhong, Yi; Sui, Xiaofeng; Xu, Hong

doi:10.1002/pat.5700

Cited by 4 publications

(4 citation statements)

References 78 publications

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“…As shown in Figure 2m–p and Figure S8 (Supporting Information), the N 1s spectra can be dissociated into three peaks at 398.2, 399.7, and 401.5 eV, which are assigned to benzenoid amine (─N═), protonated benzenoid amine (─NH─), and protonated quinonoid imine (─N + ‐), respectively. [ 59,60 ] This result demonstrates the presence of PPy in the PUF/V 2 O 5 /PPy and PUF/CNT/PPy composites. Moreover, the proportion of ─N + ‐ in N 1s increases with the increase in the amount of coated PPy, which is consistent with the experimental results.…”

Section: Resultsmentioning

confidence: 77%

Broad‐Range‐Response Battery‐Type All‐in‐one Self‐Powered Stretchable Pressure‐Sensitive Electronic Skin

Liang,

Zhang,

et al. 2023

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Highly sensitive self‐powered stretchable electronic skins with the capability of detecting broad‐range dynamic and static pressures are urgently needed with the increasing demands for miniaturized wearable electronics, robots, artificial intelligence, etc. However, it remains a great challenge to achieve this kind of electronic skins. Here, unprecedented battery‐type all‐in‐one self‐powered stretchable electronic skins with a novel structure composed of pressure‐sensitive elastic vanadium pentoxide (V2O5) nanowire‐based porous cathode, elastic porous polyurethane /carbon nanotube/polypyrrole anode, and polyacrylamide ionic gel electrolyte are reported. A new battery‐type self‐powered pressure sensing mechanism involving the output current variation caused by the resistance variation of the electrodes and electrolytes under external pressure is revealed. The battery‐type self‐powered electronic skins combining high sensitivity, broad response range (1.8 Pa–1.5 MPa), high fatigue resistance, and excellent stability against stretching (50% tensile strain) are achieved for the first time. This work provides a new and versatile battery‐type sensing strategy for the design of next‐generation all‐in‐one self‐powered miniaturized sensors and electronic skins.

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Section: Resultsmentioning

confidence: 77%

Broad‐Range‐Response Battery‐Type All‐in‐one Self‐Powered Stretchable Pressure‐Sensitive Electronic Skin

Liang,

Zhang,

et al. 2023

Small

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show abstract

“…XPS spectra of the samples were carried out to further reveal the existence of PPy in the composite samples. As shown in Figure 2m-p and Figure S7 (Supporting Information), the N1s spectra can be dissociated into three peaks at 398.2, 399.7, and 401.5 eV, which are assigned to benzenoid amine (-N=), protonated benzenoid amine (N-H), and protonated quinonoid imine (-N+) [57,58] , respectively. This result demonstrates the presence of PPy in the PUF/V2O5/PPy and PUF/CNT/PPy composites.…”

Section: Preparation and Characterizations Of Electrode And Electroly...mentioning

confidence: 99%

Highly Sensitive Broad-Range Battery-Type All-in-one Self-Powered Stretchable Pressure Sensors based on porous electrodes

Liang

Zhang

et al. 2023

Preprint

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Flexible wearable pressure sensors with high sensitivity and broad sensing range have promoted the vigorous development of flexible electronics. Currently, most of the self-powered flexible pressure sensors are built mainly based on piezoelectric and triboelectric types, which can usually only detect dynamic pressure. They may also be built by integrating batteries or capacitors with sensors, which results in low integration and limits the development of sensor miniaturization. Here, we report a novel battery-type all-in-one self-powered stretchable pressure sensor with porous polyurethane foam (PUF)/V2O5/polypyrrole (PPy) composite as both cathode and pressure-sensitive layer, hot-pressed porous PUF/carbon nanotube (CNT)/PPy composite as anode, and polyacrylamide (PAM) ionic gel as electrolyte. This self-powered flexible pressure sensor has an excellent sensing performance combining good cyclicity (at least 5000 cycles under 40% compressive strain), high sensitivity (141.5 kPa-1), and broad sensing range (1.8 Pa-1.5 MPa). Moreover, its response is small under 50% tensile strain, demonstrating the good stability against stretching. More importantly, this battery-type all-in-one self-powered pressure sensor can address the limitations that the current piezoelectric and triboelectric self-powered pressure sensors can usually only detect dynamic pressure. This work provides a new strategy for the design of novel next-generation all-in-one self-powered miniaturized pressure-sensitive wearable electronics.

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“…With the rapid advancement of aerospace, national defence, energy, and chemical industries, the demand for wearable pressure sensors capable of functioning under diverse extreme environmental conditions such as high pressure, high/low temperatures, high radiation, and strong acid/alkali environments has grown. [1][2][3][4][5][6] Flexible pressure sensors are a category that includes piezoresistive, capacitive, piezoelectric, and triboelectric pressure sensors. [7][8][9][10][11] Among them, flexible piezoresistive pressure sensors are the most widely utilized due to their high sensitivity, wide detection range, rapid response, easy measurement, and excellent stability.…”

Section: Introductionmentioning

confidence: 99%

Lightweight, superelastic, and temperature-resistant rGO/polysulfoneamide-based nanofiber composite aerogel for wearable piezoresistive sensors

Wang,

Qin,

Zhao

et al. 2023

J. Mater. Chem. C

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High strength and anti‐freezing piezoresistive pressure sensor based on a composite gel

Cited by 4 publications

References 78 publications

Broad‐Range‐Response Battery‐Type All‐in‐one Self‐Powered Stretchable Pressure‐Sensitive Electronic Skin

Broad‐Range‐Response Battery‐Type All‐in‐one Self‐Powered Stretchable Pressure‐Sensitive Electronic Skin

Highly Sensitive Broad-Range Battery-Type All-in-one Self-Powered Stretchable Pressure Sensors based on porous electrodes

Lightweight, superelastic, and temperature-resistant rGO/polysulfoneamide-based nanofiber composite aerogel for wearable piezoresistive sensors

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