Highly transparent conductive ionohydrogel for all-climate wireless human-motion sensor

Ma, Mengli; Shang, Yinghui; Shen, Hongdou; Li, Wenjun; Wang, Qigang

doi:10.1016/j.cej.2021.129865

Cited by 56 publications

(44 citation statements)

References 45 publications

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“…Reproduced with permission. [28] Copyright 2021, Elsevier; B,i) Scanning electron microscope (SEM), ii) X-ray diffraction, and iii) Different scanning calorimetry images of PEO-IL ionogels with different IL content. Reproduced with permission.…”

Section: Electrostatic Interactionmentioning

confidence: 99%

“…Compared to ionogel-2 fabricated by a linear imidazolium-tethered PIL with higher T g and structure stability, the conductivity of ionogel-1 is 22 times higher than that of ionogel-2 (i.e., 4.57 × 10 −2 mS cm −1 vs 2.07 × 10 −3 mS cm −1 ). Ma et al [28] stated a strategy to improve the conductivity of ionogel, which is using a hydrated 1-ethyl-3-methylimidazolium chloride ([EMIM]Cl) as the mobile phase. The ionogel possessed a relatively higher conductivity than that of the pure IL (38.86 vs 10 mS cm −1 ) due to the existence of water decreasing the viscosity of ILs.…”

Section: B) Schematic Of Built-up Solid Electrolyte By [Emim][tfsi] A...mentioning

confidence: 99%

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Roles of Ionic Liquids in Adjusting Nature of Ionogels: A Mini Review

Zhang

Yan

et al. 2022

Adv Funct Materials

114

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Over the past two decades, the unique features of ionic liquids (ILs) drive their exploration and exploitation in gel field and endow the gels with many excellent properties including thermal stability, antifreezing capability, mechanical strength, self-healing, conductivity, and antibacterial performance. As promising functional materials, ionogels have attracted remarkable interest in various applications including flexible electronics, energy storage, and biomedical applications. This review aims to give a detailed overview of the recent advances in developing of IL-based task-specific ionogels. The effects of ILs on the ionogels' formation and structure modification and their promotion on elevating these gel properties from the viewpoint of fundamental to the application are comprehensively discussed. The different interactions also discussed between ILs and other components in forming ionogels, such as hydrogen bond, electrostatic interaction, host-guest interaction, IL-philic and IL-phobic interaction, and introduced ILs' dissolvability to biomass; and the unique capability of ionogels owing to ILs, such as conductivity, electrochemical stability, thermal stability, and antibacterial ability. Finally, the future challenges and perspectives of ionogels are outlooked.

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Section: Electrostatic Interactionmentioning

confidence: 99%

Section: B) Schematic Of Built-up Solid Electrolyte By [Emim][tfsi] A...mentioning

confidence: 99%

Roles of Ionic Liquids in Adjusting Nature of Ionogels: A Mini Review

Zhang

Yan

et al. 2022

Adv Funct Materials

114

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“…interaction between CNF, PBA-IL, and water, respectively. [51,52] In addition, we further investigated the interaction between the polymer system and water in the presence of both CNF and PBA-IL. Promisingly, when CNF and PBA-IL coexist, the E int of the integral polymer network to water molecules increases substantially to −22.08 to −25.01 Kcal mol −1 , which is almost 5-6 times higher than that of P-W (−4.15 Kcal mol −1 ).…”

Section: Electronic Behavior Sensing Performance and Applications Of ...mentioning

confidence: 99%

Super Stretchable, Self‐Healing, Adhesive Ionic Conductive Hydrogels Based on Tailor‐Made Ionic Liquid for High‐Performance Strain Sensors

Yao

Zhang

Qian

et al. 2022

Adv Funct Materials

256

143

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Ionic conductive hydrogels (ICHs) integrate the conductive performance and soft nature of tissue‐like materials to imitate the features of human skin with mechanical and sensory traits; thus, they are considered promising substitutes for conventional rigid metallic conductors when fabricating human‐motion sensors. However, the simultaneous incorporation of excellent stretchability, toughness, ionic conductivity, self‐healing, and adhesion via a simple method remains a grand challenge. Herein, a novel ICH platform is proposed by designing a phenylboronic acid‐ionic liquid (PBA‐IL) with multiple roles that simultaneously realize the highly mechanical, electrical, and versatile properties. This elaborately designed semi‐interpenetrating network ICH is fabricated via a facile one‐step approach by introducing cellulose nanofibrils (CNFs) into the PBA‐IL/acrylamide cross‐linked network. Ingeniously, the dynamic boronic ester bonds and physical interactions (hydrogen bonds and electrostatic interactions) of the cross‐linked network endow these hydrogels with remarkable stretchability (1810 ± 38%), toughness (2.65 ± 0.03 MJ m−3), self‐healing property (92 ± 2% efficiency), adhesiveness, and transparency. Moreover, the construction of this material shows that CNFs can synergistically enhance mechanical performance and conductivity. The wide working strain range (≈1000%) and high sensitivity (GF = 8.36) make this ICH a promising candidate for constructing the next generation of gel‐based strain sensor platforms.

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“…Ma et al prepared a novel ionic hydrogel of PAM using 1-ethyl-3-methylimidazolium chloride ([EMIM]Cl) as an ionic liquid. 89 This strategy achieves high transparency and water retention properties, which are critical for visual access to information and external light stimulation. The multiple hydrogen bonds between [EMIM]Cl and the polymer chains of the hydrogel endow the ionic hydrogel with high mechanical properties and excellent long-term water retention properties, which can achieve no loss of mechanical and electrical properties for more than 30 days.…”

Section: Transparent Stretchable Wearable Strain Sensorsmentioning

confidence: 99%