Screen-printed highly stretchable and stable flexible electrodes with a negative Poisson's ratio structure for supercapacitors

Xu, Jianxin; Li, Yang; Wang, Junyao; Liu, Huan; Hou, Qi; Wang, Rui; Lang, Tianhong; Cui, Bowen; Pan, Hongxu; Chen, Yansong; Quan, Jingran; Yang, Hanbo; Li, Lixiang; Liu, Yahao

doi:10.1039/d2nr06669f

Cited by 9 publications

(4 citation statements)

References 63 publications

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“…Silver serpentine electrode is one of the simplest fabrication methods like gold serpentine electrodes. [129] It gives the flexibility to endure skin strain with cost effectiveness. [130] Niu et al reported the low-cost silver e-tattoo electrodes for the measurement of ECG and EEG.…”

Section: Silver Metal-based Electrodesmentioning

confidence: 99%

Recent Progress in the Development of Flexible Wearable Electrodes for Electrocardiogram Monitoring During Exercise

Kang,

Lee,

Kwon

et al. 2024

Advanced NanoBiomed Research

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Electrocardiogram (ECG) monitoring has recently been an important indicator of cardiac health diagnosis. In the past, ECG could be measured under limited conditions in hospitals with 12‐lead electrode systems. Recently, portable and wearable devices have offered continuous, real‐time monitoring of ECG signals in real life. However, developing wearable ECG sensors that provide low‐motion artifacts and high‐quality signals during exercise conditions is still challenging. Herein, this review reports a systematic summary of the key characteristics, properties, and requirements of flexible wearable ECG devices for the early diagnosis of heart dysfunction in dynamic motions, including exercise. In addition, the recent progress in controlling sensor adhesion and novel materials for designing dry electrodes are discussed to improve ECG signal quality in exercise. Finally, various aspects of electrode developmental challenges and limitations are reviewed, and research directions for future studies are discussed.

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Section: Silver Metal-based Electrodesmentioning

confidence: 99%

Recent Progress in the Development of Flexible Wearable Electrodes for Electrocardiogram Monitoring During Exercise

Kang,

Lee,

Kwon

et al. 2024

Advanced NanoBiomed Research

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“…The observation that the electrical response output force of artificial muscles has a greater correlation with the number of movable ions inside the actuator film has been confirmed in previous work. Therefore, it was important to perform electrochemical experiments on artificial muscles [27]. Five sets of cyclic voltammetry experiments with different groups of artificial muscles were performed (equipment model: CHI600E, scanning rate 20 mV s −1 ) and the specific capacitance of each set of samples was calculated as follows:…”

Section: Electrochemical Experimentsmentioning

confidence: 99%

A self-healing artificial muscle was realized by fitting the electrode membrane with the self-healing actuating membrane with a folded structure

Wang,

Chen,

Wang

et al. 2023

Smart Mater. Struct.

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As a part of biomimetic gelatinous polymer actuator (BGPA), hydrogel artificial muscle has the advantages of extreme flexibility, low driving voltage and controllable driving direction. However, such artificial muscles do not have self-healing properties and it is difficult to continue using them if they break, which considerably reduces their lifespan. In this paper, we propose a hydrogel artificial muscle with self-healing capability by gluing a membrane of electrodes with a pleated structure to a self-healing actuator layer. The crosslinking reaction between polyacrylic acid molecular chains and carboxylated chitosan (CLC) molecular chains was utilized to fabricat e self-healing actuator layers, while multi-walled carbon nanotubes and chitosan were employed for electrode films. The impact of CLC doping content on the self-healing properties, mechanical properties, electrical response output force properties, and electrochemical properties of self-healing artificial muscles was investigated. Experimental results demonstrated that the output force density of the self-healing artificial muscle could reach 14.7 mN g−1 with an addition of 0.2 g CLC; even after fracture-self-healing, the maximum output force density of the artificial muscle still remained above 90%, and the maximum stretching stress of the actuator film maintained a range from 91% to 99%, showcasing exceptional self-healing performance.

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“…As electronics technology gradually matures, flexible electronic devices that can be attached to curved surfaces are under rapid development. In areas such as health monitoring, − human-computer interaction, − flexible displays, − and printed electronics, − researchers have invested heavily. Developing flexible electronic technology can make living more convenient, but most of the flexible electronic devices are made of nondegradable synthetic polymers, which will lead to an increase in e-waste when the devices are discarded.…”

Section: Introductionmentioning

confidence: 99%

Upcycling of Agro-waste: Biobased Piezoresistive Sensor by Exploiting the Natural Porous Structure of Cornstalk Pith for Detecting Pressure Signals

Liu,

Wang,

Wang

et al. 2024

ACS Sustainable Chem. Eng.

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The utilization of natural biomass materials for the transformation into biobased green flexible sensors with specific electronic properties has garnered the attention of a wide range of researchers. Of these, considered as an agricultural waste, natural corn stover (NCS) has received less attention from researchers, despite its abundance, extremely low cost, and porous internal structure. This paper proposes a capillary phenomenon absorption method (CAM) to easily and low-costly modify inside corn stover pith (CSP) with aqueous natural rubber (NR) and CNT/PEDOT:PSS activation solutions (AS), which converts CSP into the biobased piezoresistive material NR40/AS@CSP. This material has a stable resistance change signal under continuously varying or constant external pressure. In addition, it has a large sensing range (5.5−500 kPa), fast response time (less than 400 ms), and strong antifatigue performance (the signal amplitude is basically the same for 300 s of fast continuous loading). With the exceptional characteristics of NR40/AS@CSP, it can be processed into CSP-based pressure sensors (CSPSs). This biobased transducer has proven their utility in practical application experiments such as pressure warning devices, Morse code, and large area sensing arrays. The CSPS obtained by modifying discarded maize stover exhibits great potential as a replacement for conventional polymer piezoresistive sensors.

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Screen-printed highly stretchable and stable flexible electrodes with a negative Poisson's ratio structure for supercapacitors

Abstract: Flexible power sources are crucial to developing flexible electronics systems, nonetheless the current poor stretchable and stable of flexible power sources hinder their application in such devices. Accordingly, the stretchability...

Cited by 9 publications

References 63 publications

Recent Progress in the Development of Flexible Wearable Electrodes for Electrocardiogram Monitoring During Exercise

Recent Progress in the Development of Flexible Wearable Electrodes for Electrocardiogram Monitoring During Exercise

A self-healing artificial muscle was realized by fitting the electrode membrane with the self-healing actuating membrane with a folded structure

Upcycling of Agro-waste: Biobased Piezoresistive Sensor by Exploiting the Natural Porous Structure of Cornstalk Pith for Detecting Pressure Signals

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