MXene hydrogels: fundamentals and applications

Zhang, Yizhou; El‐Demellawi, Jehad K.; Jiang, Qiu; Ge, Gang; Liang, Hanfeng; Lee, Kang Hyuck; Dong, Xiaochen; Alshareef, Husam N.

doi:10.1039/d0cs00022a

Cited by 477 publications

(346 citation statements)

References 56 publications

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“…MXene and amide group of HAPAM became additional crosslinking points, which con tributed to the hybrid double-network with N,N'-methylene diacryl amide (MBAA) cross linker and affected the self-healing ability and temperature sensibility. When there were two or more different kinds of monomers or polymers together with MXene nanosheets MXene-copolymeric hydrogels can also be prepared [86][87][88]. On the aspect of ex situ blending, Le et al intertwined Ti3C2Tx MXene particles in tangled PPy nanowires through hydrogen bond [89].…”

Section: Mxene-organic Hybrids Through Hydrogen Bonds and Other Supermolecular Interactionsmentioning

confidence: 99%

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Recent Advanced on the MXene–Organic Hybrids: Design, Synthesis, and Their Applications

Zhao

Wang

et al. 2021

Nanomaterials

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With increasing research interest in the field of flexible electronics and wearable devices, intensive efforts have been paid to the development of novel inorganic-organic hybrid materials. As a newly developed two-dimensional (2D) material family, MXenes present many advantages compared with other 2D analogs, especially the variable surface terminal groups, thus the infinite possibility for the regulation of surface physicochemical properties. However, there is still less attention paid to the interfacial compatibility of the MXene-organic hybrids. To this end, this review will briefly summarize the recent progress on MXene-organic hybrids, offers a deeper understanding of the interaction and collaborative mechanism between the MXenes and organic component. After the discussion of the structure and surface characters of MXenes, strategies towards MXene-organic hybrids are introduced based on the interfacial interactions. Based on different application scenarios, the advantages of MXene-organic hybrids in constructing flexible devices are then discussed. The challenges and outlook on MXene-organic hybrids are also presented.

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Section: Mxene-organic Hybrids Through Hydrogen Bonds and Other Supermolecular Interactionsmentioning

confidence: 99%

“…Except for hydrogen, the polymer chain entanglements, ionic interactions, covalent bonding were also reported, and the role of MXene sheets in hydrogel varies [86]. MXene polymer hydrogel was gradually developed with improved performance.…”

Section: Mxene-organic Hybrids Through Hydrogen Bonds and Other Supermolecular Interactionsmentioning

confidence: 99%

Recent Advanced on the MXene–Organic Hybrids: Design, Synthesis, and Their Applications

Zhao

Wang

et al. 2021

Nanomaterials

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“…Several MXene‐based smart actuators responding to electrochemical signals, [15] environmental humidity, [16] and leaf‐inspired multiresponsive MXene actuators have recently been reported [17] . However, shape‐programmable smart actuators based on MXene‐loaded hydrogels remain scarce [18] . It is anticipated that the marriage between anisotropic MXene nanosheets and isotropic hydrogels would potentially yield soft actuators with programmable photomechanical functionalities.…”

Section: Figurementioning

confidence: 99%

Near‐Infrared Light‐Driven Shape‐Morphing of Programmable Anisotropic Hydrogels Enabled by MXene Nanosheets

et al. 2021

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Herein, we report near‐infrared (NIR) light‐driven shape‐morphing of programmable MXene‐containing anisotropic hydrogel actuators that are fabricated through in situ free‐radical copolymerization of a judiciously designed MXene nanomonomer with thermosensitive hydrogel network. A low electric field (few V mm−1) was found to enable a spatial distribution of MXene nanosheets and hence introduce anisotropy into the hydrogel network. Programmable anisotropic hydrogel actuators were developed by controlling ITO electrode pattern, direct‐current (DC) electric field direction and mask‐assisted photopolymerization. As a proof‐of‐concept, we demonstrate NIR light‐driven shape morphing of the MXene‐containing anisotropic hydrogel into various shapes and devise a four‐arm soft gripper that can perform distinct photomechanical functions such as grasping, lifting/lowering down and releasing an object upon sequential NIR light exposure.

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“…[ 30–33 ] Thus, CHs combine the superiorities of both the hydrogels and the conductive fillers and exhibit performances better than the sum of the two constituents. The distinct physical and chemical properties render them promising for tissue engineering, [ 34–37 ] environmental engineering, [ 38 ] sensors, [ 39–44 ] biomedical devices, [ 45–48 ] drug delivery systems, [ 49–53 ] and flexible energy storage devices, [ 27,54–59 ] as illustrated in Figure . One attractive characteristic of CHs for use in SCs is that they can serve as both electrodes and electrolytes.…”

Section: Introductionmentioning

confidence: 99%

Conductive Hydrogel‐Based Electrodes and Electrolytes for Stretchable and Self‐Healable Supercapacitors

Cheng

Zhang

Wang

et al. 2021

Adv Funct Materials

231

115

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Stretchable self‐healing supercapacitors (SCs) can operate under extreme deformation and restore their initial properties after damage with considerably improved durability and reliability, expanding their opportunities in numerous applications, including smart wearable electronics, bioinspired devices, human–machine interactions, etc. It is challenging, however, to achieve mechanical stretchability and self‐healability in energy storage technologies, wherein the key issue lies in the exploitation of ideal electrode and electrolyte materials with exceptional mechanical stretchability and self‐healing ability besides conductivity. Conductive hydrogels (CHs) possess unique hierarchical porous structure, high electrical/ionic conductivity, broadly tunable physical and chemical properties through molecular design and structure regulation, holding tremendous promise for stretchable self‐healing SCs. Hence, this review is innovatively constructed with a focus on stretchable and self‐healing CH based electrodes and electrolytes for SCs. First, the common synthetic approaches of CHs are introduced; then the stretching and self‐healing strategies involved in CHs are systematically elaborated; followed by an explanation of the conductive mechanism of CHs; then focusing on CH‐based electrodes and electrolytes for stretchable self‐healing SCs; subsequently, application of stretchable and self‐healing SCs in wearable electronics are discussed; finally, a conclusion is drawn along with views on the challenges and future research directions regarding the field of CHs for SCs.

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MXene hydrogels: fundamentals and applications

Abstract: When two-dimensional transition metal carbides/nitrides (MXenes) meet hydrogels, they offer versatile platforms for designing novel soft materials with exciting properties.

Cited by 477 publications

References 56 publications

Recent Advanced on the MXene–Organic Hybrids: Design, Synthesis, and Their Applications

Recent Advanced on the MXene–Organic Hybrids: Design, Synthesis, and Their Applications

Near‐Infrared Light‐Driven Shape‐Morphing of Programmable Anisotropic Hydrogels Enabled by MXene Nanosheets

Conductive Hydrogel‐Based Electrodes and Electrolytes for Stretchable and Self‐Healable Supercapacitors

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