Highly Transparent, Stretchable, and Self-Healable Ionogel for Multifunctional Sensors, Triboelectric Nanogenerator, and Wearable Fibrous Electronics

Sun, Lijie; Huang, Hongfei; Ding, Qiyu; Guo, Yifan; Sun, Wei; Wu, Zhuangchun; Qin, Minglin; Guan, Qingbao; You, Zhengwei

doi:10.1007/s42765-021-00086-8

Cited by 105 publications

(59 citation statements)

References 49 publications

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“…Additionally, when the LiTFSI concentration is increased to 2 M, the healing efficiency is greatly improved to 95.3% with the 0.3 h. The Li-bonds could help to provide more healing sites and accelerate the recrosslinking of polymer chains, ensuring that damage to the IE is completely repaired. In comparison with other reported ionic conductive materials from transparency, stretchability, and selfhealing performance, [13,14,[25][26][27][28][29][30][31][32][33][34][35][36] our IE has overwhelmingly combined performances (Figure 2f).…”

Section: Fast Self-healing and Electrical Performances Of Iesmentioning

confidence: 73%

Lithium Bonds Enable Small Biomass Molecule‐Based Ionoelastomers with Multiple Functions for Soft Intelligent Electronics

Dang

Zhang

et al. 2022

Small

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Lipoic acid (LA), which originates from animals and plants, is a small biomass molecule and has recently shown great application value in soft conductors. However, the severe depolymerization of LA places a significant limitation on its utilization. A strategy of using Li‐bonds as both depolymerization quenchers and dynamic mediators to melt transform LA into high‐performance ionoelastomers (IEs) is proposed. They feature dry networks while simultaneously combining transparency, stretchability, conductivity, self‐healing ability, non‐corrosive property, re‐mouldability, strain‐sensitivity, recyclability, and degradability. Most of the existing soft conductors’ drawbacks, such as the tedious synthesis, non‐renewable polymer networks, limited functions, and single‐use only, are successfully solved. In addition, the multi‐functions allow IEs to be used as soft sensors in human–computer interactive games and wireless remote sports assistants. Notably, the recycled IE also provides an efficient conductive filler for transparent ionic papers, which can be used to design soft transparent triboelectric nanogenerators for energy harvesting and multidirectional motion sensing. This work creates a new direction for future research involving intelligent soft electronics.

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Section: Fast Self-healing and Electrical Performances Of Iesmentioning

confidence: 73%

Lithium Bonds Enable Small Biomass Molecule‐Based Ionoelastomers with Multiple Functions for Soft Intelligent Electronics

Dang

Zhang

et al. 2022

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“…In addition, we are aware of the dehydration issue that is a common challenge for hydrogel-based flexible sensors, especially when they are used for thermosensation at high temperature. Although organohydrogels or ionogels , have a comparative advantage in terms of antidehydration, the dehydration issue could be alleviated to some extent because our hydrogels consisting of hydrophilic polysaccharide and a highly polar zwitterionic polymer exhibit strong hygroscopicity. In addition, our hydrogels mainly focus on the application in the field of multichannel monitoring of physiological signals (vide infra) including body temperature, that is, in fact, follows in a narrow range (30–40 °C), with a relatively low priority of concern to antidehydration.…”

Section: Resultsmentioning

confidence: 99%

Ultrastretchable, Highly Transparent, Self-Adhesive, and 3D-Printable Ionic Hydrogels for Multimode Tactical Sensing

et al. 2021

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Ionic gel-based electronic devices are essential in future healthcare/biomedical applications, such as advanced diagnostics, therapeutics, physiotherapy, etc. However, considerable efforts have been devoted to integrating ultrahigh stretchability, transparency, self-adhesion, and a low-cost manufacturing process in one material for dealing with a variety of application scenarios in the real world. Here, we describe an ionically conductive hydrogel-based electronic technology by introducing charge-rich polyzwitterions into a natural polysaccharide network. The proposed hydrogel possesses ultrahigh stretchability (975%), unique optical transmittance (96.2%), and universal conformal adhesion. The bionic hydrogel electronic devices possess superior dual force/temperature sensation with high sensitivity. Moreover, we develop dedicated sensor arrays via an additive manufacturing route and demonstrate the feasibility of monitoring physical activity or analyzing the mental state of a human body based on the multichannel signal acquisition of joint bending, pulse, vocal-cord vibration, electroencephalogram, eye movement, body temperature, etc. This all-in-one strategy based on a versatile ionic hydrogel electronic platform is anticipated to open up new tactical sensing applications in smart robotics, human−machine interfaces, and wearable monitoring systems.

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“…The rapid progress of next-generation wearable electronics has driven increasing demands for power sources with flexibility, stretchability, and sustainability. − However, the common used power suppliers, such as batteries and supercapacitors, are limited by their rigid structure, complex fabrication, and non self-charging ability. Thanks to the advent of flexible nanogenerators that convert ambient mechanical energy into electricity, the soft and sustainable power sources have been well developed in recent years. − In virtue of its high output, lightweight, and low cost, flexible triboelectric nanogenerator (TENG) based on coupling effect of contact electrification and electrostatic induction is considered as one of the most promising wearable power sources for human motion energy harvesting. − In particular, the single-electrode TENG (S-TENG) using hydrogel as the ionic conductor has gained increasing attention because of its merits of conductivity, stretchability, and transparency …”

mentioning

confidence: 99%

Biomechanical Energy Harvesters Based on Ionic Conductive Organohydrogels via the Hofmeister Effect and Electrostatic Interaction

Zhang

et al. 2021

ACS Nano

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The recent use of cryoprotectant replacement method for solving the easy drying problem of hydrogels has attracted increasing research interest. However, the conductivity decrease of organohydrogels due to the induced insulating solvent limited their electronic applications. Herein, we introduce the Hofmeister effect and electrostatic interaction to generate hydrogen and sodium bonds in the hydrogel. Combined with its double network, an effective charge channel that will not be affected by the solvent replacement, is therefore built. The developed organohydrogel-based single-electrode triboelectric nanogenerator (OHS-TENG) shows low conductivity decrease (one order) and high output (1.02−1.81 W/m 2 ), which is much better than reported OHS-TENGs (2− 3 orders, 41.2−710 mW/m 2 ). Moreover, replacing water with glycerol in the hydrogel enables the device to exhibit excellent long-term stability (four months) and temperature tolerance (−50−100 °C). The presented strategy and mechanism can be extended to common organohydrogel systems aiming at high performance in electronic applications.

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Highly Transparent, Stretchable, and Self-Healable Ionogel for Multifunctional Sensors, Triboelectric Nanogenerator, and Wearable Fibrous Electronics

Cited by 105 publications

References 49 publications

Lithium Bonds Enable Small Biomass Molecule‐Based Ionoelastomers with Multiple Functions for Soft Intelligent Electronics

Lithium Bonds Enable Small Biomass Molecule‐Based Ionoelastomers with Multiple Functions for Soft Intelligent Electronics

Ultrastretchable, Highly Transparent, Self-Adhesive, and 3D-Printable Ionic Hydrogels for Multimode Tactical Sensing

Biomechanical Energy Harvesters Based on Ionic Conductive Organohydrogels via the Hofmeister Effect and Electrostatic Interaction

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