Flexible and Ultra‐Sensitive Planar Supercapacitive Pressure Sensor Based on Porous Ionic Foam

Tang, Yu-Dong; Wang, Peng; Li, Guoxian; Wang, Guo-Yuan; Yu, Wei; Meng, Chuizhou; Guo, Shuxiang

doi:10.1002/adem.202200814

Cited by 12 publications

(8 citation statements)

References 57 publications

(65 reference statements)

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“…fabricated flexible tactile sensors using a porous polyurethane/PVA gel electrolyte between the two electrodes using PEDOT:PSS films with microsphere microstructures. [ 107 ] These sensors can show a high sensitivity of 162.90 kPa −1 . Li et al.…”

Section: Bioelectronic Applications Of Icpsmentioning

confidence: 99%

Bioelectronic Applications of Intrinsically Conductive Polymers

Gao

Bao

Chen

et al. 2023

Adv Elect Materials

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Since the discovery of conducting polyacetylene in the 1970s, intrinsically conducting polymers (ICPs) have attracted great attention because of their interesting structure, properties, and applications. Notably different from conventional conductors such as metals and doped semiconductors, ICPs have high mechanical flexibility and are light weight. In addition, their properties can be easily tuned by controlling the doping level, modifying the chemical structure, or forming composites with organic or inorganic materials. Their application in bioelectronics is particularly interesting because they have good biocompatibility and good mechanical matching with biological tissues. In this article, the methods to increase the mechanical stretchability of ICPs are first reviewed because high stretchability is often required for bioelectronic applications while pristine ICPs generally have limited stretchability. The application of ICPs as stretchable electrodes for epidermal biopotential detection and neural interfaces is discussed. Then, the employment of ICPs as the electrodes or sensing material of mechanical sensors is reviewed. They also have important application in controllable drug delivery. Last, their applications in the wearable energy harvesting and storage devices including thermoelectric generators and supercapacitors are also covered.

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Section: Bioelectronic Applications Of Icpsmentioning

confidence: 99%

Bioelectronic Applications of Intrinsically Conductive Polymers

Gao

Bao

Chen

et al. 2023

Adv Elect Materials

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“…Compared with flexible sensors based on capacitance, − piezoelectric, , and tribological electricity, , piezoresistive sensors have the characteristics of a simple structure, high sensitivity, low power consumption, and easy signal detection. Scientists have obtained a range of high-performance sensors from the perspective of material and structural design.…”

Section: Introductionmentioning

confidence: 99%

Printable All-Paper Pressure Sensors with High Sensitivity and Wide Sensing Range

Zheng

Ding

Guo

2023

ACS Appl. Mater. Interfaces

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With the rapid development of flexible electronics, a large amount of electronic waste is becoming a global concern. Because of the biodegradable and environment-friendly properties, cellulose paper as flexible substrates is an alternative pathway to effectively address the electronic pollution. Recently, paper-based piezoresistive pressure sensors with a simple structure and easy signal detection have been widely used in health monitoring, soft robots, and so forth. However, the low sensitivity and narrow working range of paper-based sensors limit their practical applications. Here, an all paper-based piezoresistive pressure sensor is successfully constructed by assembling a bottom electrode with a screen-printed interdigital Cu electrode on paper and a top sensing electrode. The top electrode is simply fabricated using a one-step impregnation method to coat a thin poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) layer on air-laid paper. The constructed all-paper sensor displays a maximum sensitivity of 768.07 kPa −1 , a wide detection range (up to 250 kPa), and excellent cycle stability (5000 cycles). Furthermore, the sensor can clearly respond from low pressure (such as wrist pulse) to high pressure (finger tapping). The outstanding performance can be attributed to the surface and interface design of rough and fiberstructured paper and the high conductivity of copper and PEDOT:PSS. Finally, based on the printing technology, array sensors are fabricated to identify spatial pressure distributions, demonstrating the capability of low-cost and large-area fabrication for the practical production applications. This printable all-paper sensor with excellent sensing performance exhibits great potential for use in new-generation green and portable electronics.

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“…Ionic hydrogels of various kinds have recently been created for tactile sensors, which generally depend on two different types of traditional sensing mechanisms. One type of flexible mechanical sensor uses resistive- or capacitive-based sensing principles to translate changes in particular electrical characteristics of resistors and capacitors into the variation of external mechanical stimuli [ 12 , 13 , 14 , 15 ]. For example, we have reported the design and manufacture of a flexible pressure sensor with a porous ionic hydrogel.…”

Section: Introductionmentioning

confidence: 99%

Recent Development of Self-Powered Tactile Sensors Based on Ionic Hydrogels

Zhao

Liu

et al. 2023

Gels

Self Cite

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Hydrogels are three-dimensional polymer networks with excellent flexibility. In recent years, ionic hydrogels have attracted extensive attention in the development of tactile sensors owing to their unique properties, such as ionic conductivity and mechanical properties. These features enable ionic hydrogel-based tactile sensors with exceptional performance in detecting human body movement and identifying external stimuli. Currently, there is a pressing demand for the development of self-powered tactile sensors that integrate ionic conductors and portable power sources into a single device for practical applications. In this paper, we introduce the basic properties of ionic hydrogels and highlight their application in self-powered sensors working in triboelectric, piezoionic, ionic diode, battery, and thermoelectric modes. We also summarize the current difficulty and prospect the future development of ionic hydrogel self-powered sensors.

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Flexible and Ultra‐Sensitive Planar Supercapacitive Pressure Sensor Based on Porous Ionic Foam

Cited by 12 publications

References 57 publications

Bioelectronic Applications of Intrinsically Conductive Polymers

Bioelectronic Applications of Intrinsically Conductive Polymers

Printable All-Paper Pressure Sensors with High Sensitivity and Wide Sensing Range

Recent Development of Self-Powered Tactile Sensors Based on Ionic Hydrogels

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