A multifunctional sustainable ionohydrogel with excellent low-hysteresis-driven mechanical performance, environmental tolerance, multimodal stimuli-responsiveness, and power generation ability for wearable electronics

Si, Wan-Jie; Liang, Yingpei; Chen, Yukun; Zhang, Shuidong

doi:10.1039/d2ta04276b

Cited by 37 publications

(20 citation statements)

References 57 publications

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“…[50][51] Moreover, the Na + , H + , and AgNPs in the solvent make the NSD-Gel e-skin conductive, and the NSD-Gel e-skin possesses hypersensitivity to strain due to deformation can effectively change the ion transport path and time (Figure 1d). [52][53] Furthermore, due to the zwitterions' hydrophilic functional groups, betaines are properly dispersed in the solution, which ensures a continuously conductive network entangled with the collagen fiber bundles. Because its ion transfer efficiency is highly sensitive to the solvent's temperature and moisture content, the NSD-Gel e-skin exhibits high sensitivity to temperature and humidity (Figure 1e,f).…”

Section: Design and Fabrication Of Nsd-gel E-skinmentioning

confidence: 99%

Mechanically Robust and Transparent Organohydrogel‐Based E‐Skin Nanoengineered from Natural Skin

Bai

Wang

Zheng

et al. 2023

Adv Funct Materials

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Electronic skins (e‐skins), which are mechanically compliant with human skin, are regarded as ideal electronic devices for noninvasive human–machine interaction and wearable devices. In order to fully mimic human skin, e‐skins should possess reliable mechanical properties and be able to resist external environmental factors like heat, cold, desiccation, and bacteria, while perceiving multiple external stimuli, such as temperature, humidity, and strain. Here, a transparent, mechanically robust, environmentally stable, versatile natural skin‐derived organohydrogel (NSD‐Gel) is nanoengineered through the integration of betaine, silver nanoparticles, and sodium chloride in a glycerol/water binary solvent. The transparent NSD‐Gel e‐skin exhibits outstanding tensile strength (7.33 MPa), puncture resistance, moisture retention, self‐regeneration, and antibacterial properties. Additionally, the NSD‐Gel e‐skin possesses enhanced cold/heat resistance and stimuli‐responsive characteristics that effectively sense environmental temperature and humidity changes, as well as physiological human body motion signals. In vitro and in vivo experiments show that the NSD‐Gel e‐skin confers desired biocompatibility and tissue protective properties even in extremely harsh environments (−196 °C to 100 °C). The NSD‐Gel e‐skin has great potential for applications in multidimensional wearable electronic devices, human‐machine interfaces, and artificial intelligence, generating a versatile platform for the development of high‐performance e‐skins with on‐demand properties.

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Section: Design and Fabrication Of Nsd-gel E-skinmentioning

confidence: 99%

Mechanically Robust and Transparent Organohydrogel‐Based E‐Skin Nanoengineered from Natural Skin

Bai

Wang

Zheng

et al. 2023

Adv Funct Materials

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“…Compared with the state‐of‐the‐art in the literature reports, the power density of GO/CNT HA‐TENG is relatively high (as shown in Table S1 in the Supporting Information). [ 38 , 43 , 44 , 45 , 46 , 47 , 48 , 49 , 50 ] Finally, the GO/CNT HA‐TENG was used to charge commercial capacitors, as shown in Figure 5h . When the working frequency is 1 Hz, three different capacitors (0.22, 1.0, and 3.3 µF) could be charged for 60 s through the rectifier, and charge the voltage of the capacitor to 5.05, 2.47, and 1.66 V respectively.…”

Section: Resultsmentioning

confidence: 99%

Ultralight, Elastic, Hybrid Aerogel for Flexible/Wearable Piezoresistive Sensor and Solid–Solid/Gas–Solid Coupled Triboelectric Nanogenerator

et al. 2022

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Aerogels have been attracting wide attentions in flexible/wearable electronics because of their light weight, excellent flexibility, and electrical conductivity. However, multifunctional aerogel-based flexible/wearable electronics for human physiological/motion monitoring, and energy harvest/supply for mobile electronics, have been seldom reported yet. In this study, a kind of hybrid aerogel (GO/CNT HA) based on graphene oxide (GO) and carboxylated multiwalled carbon nanotubes (CMWCNTs) is prepared which can not only used as piezoresistive sensors for human motion and physiological signal detections, but also as high performance triboelectric nanogenerator (TENG) coupled with both solid-solid and gas-solid contact electrifications (CE). The repeatedly loading-unloading tests with 20 000 cycles exhibit its high and ultrastable piezoresistive sensor performances. Moreover, when the obtained aerogel is used as the electrode of a TENG, high electric output performance is produced due to the synergistic effect of solid-solid, and gas-solid interface CEs (3D electrification: solid-solid interface CE between the two solid electrification layers; gas-solid interface CE between the inner surface of GO/CNT HA and the air filled in the aerogel pores). This kind of aerogel promises good applications for human physiological/motion monitoring and energy harvest/supply in flexible/wearable electronics such as piezoresistive sensors and flexible TENG.

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“…However, IG 0.825 -AL 0.26% -Zn 18% is still irreplaceable because its ionic conductivity is higher than that of other types of tough materials. Compared with the representative piezoresistive ionogel pressure sensors reported in recent years, [39][40][41][42][49][50][51][52][53] the sensitivity of 33.8 kPa −1 for the bilayer ionogel lm belongs to the ultra-sensitive pressure sensor (Fig. S24 †).…”

Section: Applications In Pressure Sensors and Temperature Sensorsmentioning

confidence: 99%

“…2g), IG 0.825 -AL 0.26% -Zn 18% exhibited outstanding comprehensive properties, including strain, stress, fracture energy, toughness and Young's modulus. 17,25,26,[38][39][40][41][42][43][44] Notably, the fracture strength (21 MPa), Young's modulus (325 MPa) and toughness (102 MJ m −3 ) of IG 0.85 -AL 0.065% -Zn 15% are substantially higher than those of existing ionogels (Fig. 2h).…”

Section: Mechanical Properties and Mechanism Studymentioning

confidence: 99%

An ultra-tough and ultra-sensitive ionogel pressure/temperature sensor enabled by hierarchical design of both materials and devices

et al. 2023

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A multifunctional sustainable ionohydrogel with excellent low-hysteresis-driven mechanical performance, environmental tolerance, multimodal stimuli-responsiveness, and power generation ability for wearable electronics

Abstract: The defects of conductive hydrogels, such as high internal friction, poor performance at freezing temperatures, and evaporation during long-term storage, restrict their application in wearable electronics.

Cited by 37 publications

References 57 publications

Mechanically Robust and Transparent Organohydrogel‐Based E‐Skin Nanoengineered from Natural Skin

Mechanically Robust and Transparent Organohydrogel‐Based E‐Skin Nanoengineered from Natural Skin

Ultralight, Elastic, Hybrid Aerogel for Flexible/Wearable Piezoresistive Sensor and Solid–Solid/Gas–Solid Coupled Triboelectric Nanogenerator

An ultra-tough and ultra-sensitive ionogel pressure/temperature sensor enabled by hierarchical design of both materials and devices

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