Phase-locked constructing dynamic supramolecular ionic conductive elastomers with superior toughness, autonomous self-healing and recyclability

Nature Communications, Journal Year: 2022, Volume and Issue: 13(1)

Published: Aug. 18, 2022

Stretchable ionic conductors are considerable to be the most attractive candidate for next-generation flexible ionotronic devices. Nevertheless, high conductivity, excellent mechanical properties, good self-healing capacity and recyclability necessary but can rarely satisfied in one material. Herein, we propose an conductor design, dynamic supramolecular conductive elastomers (DSICE), via phase-locked strategy, wherein locking soft phase polyether backbone conducts lithium-ion (Li+) transport combination of disulfide metathesis stronger quadruple hydrogen bonds hard domains contributes versatility. The dual-phase design performs its own functions conflict among capability, compatibility thus defeated. well-designed DSICE exhibits conductivity (3.77 × 10-3 S m-1 at 30 °C), transparency (92.3%), superior stretchability (2615.17% elongation), strength (27.83 MPa) toughness (164.36 MJ m-3), capability (~99% room temperature) favorable recyclability. This work provides interesting strategy designing advanced offers promise devices or solid-state batteries.

Language: Английский

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Ultra‐Stretchable and Fast Self‐Healing Ionic Hydrogel in Cryogenic Environments for Artificial Nerve Fiber

Advanced Materials, Journal Year: 2022, Volume and Issue: 34(16)

Published: Feb. 1, 2022

Self-healing materials behave with irreplaceable advantages in biomimetic intelligent robots (BIR) for avoiding or reducing safety hazards and economic losses from accidental damage during service. However, the self-healing ability is unreservedly lost even becomes rigid fragile cryogenic environment where BIR are precisely needed. Here, authors report a versatile ionic hydrogel fast ability, ultra-stretchability, stable conductivity, at -80 °C. The systematically optimized to improve hydrogen-bonded network nanostructure, coordinated achieving quick within 10 min, large deformation tolerance of over 7000%, superior conductivity 11.76 S cm-1 anti-freezing which difficult obtain simultaneously. Such provides new opportunities artificial electronic devices harsh environments. As prospective application, they fabricate an nerve fiber by mimicking structure functions myelinated axon, exhibiting property potential-gated signal transmission. This integrated into robot demonstrating real-time high fidelity throughput information interaction under big temperature. bionic device will bring pioneering open broad application scenario extreme conditions.

Language: Английский

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Graphene Oxide Encapsulating Liquid Metal to Toughen Hydrogel

Advanced Functional Materials, Journal Year: 2021, Volume and Issue: 31(51)

Published: Sept. 17, 2021

Abstract Stretchable and tough hydrogels are highly required for various flexible devices. Liquid metal (LM) emerges as an attractive applicant in preparing functional due to its unique features. However, the high fluidity of LM incompatibility between polymer matrix make it hard fabricate hydrogels. Herein, inspired by function ligaments biological structure, graphene oxide (GO) nanosheets introduced encapsulate droplets. GO form strong interaction with both create a stable shell that prevents droplet from fracture exudation network. The LM/GO core–shell microstructure avoids phase separation produces hydrogel stress up 303 kPa at 1240% elongation. It also shows notch insensitivity adhesion surfaces. This study opens possibility using stretchable

Language: Английский

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Tough and Ultrastretchable Liquid‐Free Ion Conductor Strengthened by Deep Eutectic Solvent Hydrolyzed Cellulose Microfibers

Advanced Functional Materials, Journal Year: 2022, Volume and Issue: 32(29)

Published: May 3, 2022

Abstract Ion conductors (ICs) have gained extensive research interest in various advanced application scenarios including sensors, batteries, and supercapacitors. However, stretchable, tough, long‐term stable ICs are still hard to achieve yet highly demanded. In this study, the authors propose a one‐pot green sustainable fabrication of cellulose based through polymerizable deep eutectic solvents treated followed by an situ photo‐polymerization. The obtained exhibit extremely high stretchability (3210 ± 302%), toughness (13.17 2.32 MJ m −3 ), transparency, self‐healing ability. Notably, introduction fibers greatly enhances mechanical properties while eliminating environmental concerns traditional nanocellulose process. More importantly, possess good performance stability after 1 month storage. Due these outstanding properties, feasibility applying human motion sensing physiological signal detecting is demonstrated. This simple method will contribute development self‐healing, transparent, ICs.

Language: Английский

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Mechanically Robust and Highly Conductive Ionogels for Soft Ionotronics

Advanced Functional Materials, Journal Year: 2022, Volume and Issue: 33(10)

Published: Dec. 25, 2022

Abstract Ionogels are promising materials for flexible electronics due to their continuous conductive phase, high thermal and chemical stability. However, a large amount of ionic liquid is required get conductivity, resulting in sharp decline the mechanical properties. Therefore, it great challenge prepare ionogels with both conductivity properties, which important practical applications. Herein, strength stretchability, extraordinary excellent transparency, outstanding durability, stability fabricated crosslinked polymer, liquid, lithium salt. The adoption salt can significantly improve common dilemma material science, simultaneously, address conflict between ionogels. It primarily corresponding microphase‐separation effects induced by bonds formed ions carbonyl groups on polymer networks. Ionotronics including resistance‐type sensors strain temperature sensing triboelectric nanogenerators stable output performance fabricated. Moreover, ionogel‐based microcircuit arrays resolution accuracy through digital light processing printing technology. have promise various ionotronics many fields.

Language: Английский

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Highly Stretchable and Conductive MXene‐Encapsulated Liquid Metal Hydrogels for Bioinspired Self‐Sensing Soft Actuators

Advanced Functional Materials, Journal Year: 2023, Volume and Issue: 34(7)

Published: Nov. 3, 2023

Abstract Advanced sensation and actuation abilities of various living organisms in nature have inspired researchers to design bioinspired self‐sensing soft actuators. However, the majority conventional actuators primarily possess capabilities while lacking a real‐time sensing signal feedback. Here, promising strategy is reported develop highly stretchable conductive hydrogels for actuators, which integrate strain‐sensing functions into single materials system. The are designed fabricated by situ copolymerization amino‐functionalized MXene‐encapsulated liquid metal nanodroplets (LM@A‐MXene) poly( N ‐isopropylacrylamide) with controllable activated nanogels as nano‐cross‐linkers. resulting hydrogel presents compacted conducting network porous microstructure, giving rise robust integration high conductivity, excellent strain sensitivity, broad stretchability, stability, fast response speed. Interestingly, gradient structure, formed self‐precipitation LM@A‐MXene, endows shape‐programmable actuation, light‐driven remote control, function. As proof‐of‐concept application, gripper based on developed, can not only grasp, lift, release objects, but also perceive every movement state monitoring resistance changes. proposed actuator offer new insights developing smart robotics other artificial intelligent devices.

Language: Английский

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A stretchable, environmentally tolerant, and photoactive liquid metal/MXene hydrogel for high performance temperature monitoring, human motion detection and self-powered application

Nano Energy, Journal Year: 2023, Volume and Issue: 117, P. 108875 - 108875

Published: Sept. 6, 2023

Language: Английский

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Tough Liquid‐Free Ionic Conductive Elastomers with Robust Adhesion and Self‐Healing Properties for Ionotronic Devices

Advanced Functional Materials, Journal Year: 2023, Volume and Issue: 34(4)

Published: Oct. 20, 2023

Abstract Polymerizable deep eutectic solvent (PDES) as a newly emerging type of liquid‐free ionic conductive elastomer is considered to be the most attractive candidate for next generation ionotronic devices. However, it remains huge challenge integrate high conductivity, excellent mechanical properties, good self‐healing capacity, and robust adhesion into single material that satisfies stringent demand devices in various scenarios. Herein, constructed by incorporating tannic acid‐encapsulated cellulose nanocrystals (TA@CNC) multifunctional hydrogen bond donors (HBDs) along with poly(acrylic acid) choline chloride (hydrogen acceptors, HBAs) form dynamic cross‐linking network through multiple bonds. The presence rigid crystalline regions sufficient interaction sites on TA@CNC endow resultant elastomers (ACTC) superior properties (≈496 kPa, 2400%), (≈68.6 kPa), property. Benefiting from above integrated features, wearable sensors harnessing ACTC resistance sensing module provide unaltered performance under off‐axial deformation (twisting prick). Additionally, capacitance pressure sensor stability force distribution developed, opening up new avenue development

Language: Английский

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Self-healing, self-adhesive, and stretchable conductive hydrogel for multifunctional sensor prepared by catechol modified nanocellulose stabilized poly(α-thioctic acid)

Carbohydrate Polymers, Journal Year: 2023, Volume and Issue: 313, P. 120813 - 120813

Published: March 16, 2023

Language: Английский

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Liquid Metal-Doped Conductive Hydrogel for Construction of Multifunctional Sensors

Analytical Chemistry, Journal Year: 2023, Volume and Issue: 95(7), P. 3811 - 3820

Published: Feb. 7, 2023

Interest in wearable and stretchable multifunctional sensors has grown rapidly recent years. The sensing elements must accurately detect external stimuli to expand their applicability as sensors. However, the sensor's self-healing adhesion a target object have been major challenges developing such practical versatile devices. In this study, we prepared hydrogel (LM-SA-PAA) composed of liquid metal (LM), sodium alginate (SA), poly(acrylic acid) (PAA) with ultrastretchable, excellent self-healing, self-adhesive, high-sensitivity capabilities that enable conformal contact between sensor skin even during dynamic movements. performance stems from its double cross-linked networks, including physical chemical networks. cross-link formed by ionic interaction carboxyl groups PAA gallium ions provide reversible autonomous repair properties, whereas covalent bond provides stable strong network. Alginate forms microgel shell around LM nanoparticles via coordination Ga ions. addition offering exceptional colloidal stability, sufficient polar groups, ensuring adheres diverse substrates. Based on efficient electrical pathway provided LM, exhibited strain sensitivity enabled detection various human motions electrocardiographic monitoring. preparation method is simple can be used for low-cost fabrication sensors, which broad application prospects human-machine interface compatibility medical

Language: Английский

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