Self-healable and stretchable ionogels serve as electrolytes and substrates for integrated all-in-one micro-supercapacitors

Shi, Yujun; Wang, Yutian; Gu, Yifan; Zheng, Liting; Ma, Shaoshuai; Xue, Pan

doi:10.1016/j.cej.2019.123645

Cited by 65 publications

(50 citation statements)

References 45 publications

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“…In addition, the characteristic peaks in the chain of Pluronic are observed at 2871 cm −1 (C-H stretching vibration peak), 1373 cm −1 (C-H non-planar rocking vibration peak), 1100 cm −1 (C-O bending vibration peak) and 934 cm −1 (C-H rocking vibration peak) [23,24]. In comparison with the curve of pure PVA, O-H stretching vibration peak at 3308 cm −1 in the BPVA-Pluronic-3 hydrogel shifts to higher frequencies, proving the existence of hydrogen bonding between PVA molecular chains and Pluronic molecular chains [38]. On the meanwhile, 1 H NMR spectra (Figure 2b-e) were used to further prove the chemical structures.…”

Section: Resultsmentioning

confidence: 87%

“…To further study the influence of molecular chain network motion, the stress-strain behaviors of the BPVA-Pluronic-5 hydrogel were measured at various stretching speed. As Figure S2 depicts, the stress-strain curves consist of elastic deformation zone, yield point and plastic deformation zone [38]. Strain increases significantly with strain in elastic deformation stage, the movement of molecular chain and the relative slip between chains lead to a neck extension in plastic deformation stage.…”

Section: Resultsmentioning

confidence: 99%

“…The DIW functions based on our former reported work [29,38]. The carbon nanotube dispersion was loaded into the plastic extrusion syringe as electrode ink, assembled with nozzle made of stainless steel (inner diameter of 340 µm).…”

Section: Fabrication Of Flexible Electrochemical Mscmentioning

confidence: 99%

“…Pluronic as the second network playing the role of plasticizer and elastomer enhances flexibility and mechanical elasticity of hydrogel. Compared with traditional PVA based hydrogel, Pluronic triblock polymer results in the micellization, microphase separation and physical cross-linking via the self-assembly of micelles, thus promoting the efficiency of self-healing behavior [38]. Optimizing preparing strategy of planar micro electrodes, the MSC can be assembled by attaching the electrolyte tightly to the multi-walled carbon nanotubes (MWCNT) interdigital electrode fabricated by printing MWCNT ink onto the cellulosic paper by DIW technique.…”

Section: Introductionmentioning

confidence: 99%

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Self-Healing and Highly Stretchable Hydrogel for Interfacial Compatible Flexible Paper-Based Micro-Supercapacitor

Wang

Shi

et al. 2021

Materials

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Most reported wearable electronic devices lack self-healing chemistry and flexible function to maintain stable energy output while irreversible damages and complex deformations. In this work, we report a dual-dynamic network electrolyte synthesized by micellar elastomers introduced into strong hydrogel matrix. The gel electrolyte is fabricated by physically cross-linking the borax-polyvinyl alcohol (B-PVA) network as tough matrix and poly (ethylene oxide) (PEO)-poly (propylene oxide) (PPO)-poly (ethylene oxide) (Pluronic) to frame elastic network, followed by immersion in potassium chloride solution. Under the action of dynamic borate ester bond and multi-network hydrogen bond, the as-prepared electrolyte exhibits high stretchability (1535%) and good self-healing efficiency. Based on the electrolyte, we assemble the interfacial compatible micro-supercapacitor (MSC) by multi-walled carbon nanotubes (MWCNT) interdigital electrode printed on cellulosic paper by direct ink writing (DIW) technique. Thanks to the large specific area and compressive deformation resistance of cellulosic paper, the MSC with tightly interfacial contact achieves high volumetric capacitance of 801.9 mF cm−3 at the current density of 20 μA cm−2. In the absence of stimulation of the external environment, the self-healing MSC demonstrates an ideal capacity retention (90.43%) after five physical damaged/healing cycles. Our research provides a clean and effective strategy to construct wearable MSC.

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Section: Resultsmentioning

confidence: 87%

Section: Resultsmentioning

confidence: 99%

Section: Fabrication Of Flexible Electrochemical Mscmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Self-Healing and Highly Stretchable Hydrogel for Interfacial Compatible Flexible Paper-Based Micro-Supercapacitor

Wang

Shi

et al. 2021

Materials

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“…In recent years, researchers have repeatedly attempted to integrate multiple functions into stretchable supercapacitor systems. Because of their 2D structure, planar supercapacitors can exhibit various functions, such as ultrathin devices, [76] transparent devices, [160,164,188] and electrochromic, [46,47,141] sensing, [45,186] self-healing, [58,65,161] and self-powered [118,119] abilities to produce multifunctional planar supercapacitors to meet multiple functional requirements. The fibrous supercapacitor can share a fibrous electrode with other fibrous energy conversion devices or other fibrous energy storage devices and can be integrated into one device with self-powering ability, high energy density, and high power density simultaneously.…”

Section: Multifunctional Stretchable Supercapacitorsmentioning

confidence: 99%

Stretchable Supercapacitors: From Materials and Structures to Devices

Shao

Chen

et al. 2020

Small Methods

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Stretchable supercapacitors have received widespread attention due to their potential applications in wearable electronics and health monitoring. Stretchable supercapacitors not only possess advantages such as high power density, long cycle life, safety, and low cost of conventional supercapacitors but also have excellent flexibility and stretchability, which make them well integrated with other wearable systems. In this review, various strategies to fabricate stretchable supercapacitors are focused. The preparation methods for stretchable electrodes/devices in the literature are carefully classified and analyzed. Three strategies for preparing stretchable electrodes/devices are summarized in detail—the design of elastic polymer substrates, stretchable electrode structures, and composite electrodes combined with elastic polymers and stretchable structures. Meanwhile, the interface problem of electrodes/devices in the stretching process is studied in depth. The research progress of multifunctional stretchable supercapacitors is also introduced. Finally, challenges and possible solutions that still need to be addressed in the future development of stretchable supercapacitors are highlighted and prospected. This review comprehensively discusses the latest research progress in the field of stretchable supercapacitors and systematically elucidates the electrochemical and mechanical properties of these devices, hoping to improve the roadmap for scientists and engineers to develop supercapacitors with high electrochemical performance and good stretchability.

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Self‐healing Stretchable Composite Conductors

Park,

Son

2024

Chemical Physics of Polymer Nanocomposites

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Self-healable and stretchable ionogels serve as electrolytes and substrates for integrated all-in-one micro-supercapacitors

Cited by 65 publications

References 45 publications

Self-Healing and Highly Stretchable Hydrogel for Interfacial Compatible Flexible Paper-Based Micro-Supercapacitor

Self-Healing and Highly Stretchable Hydrogel for Interfacial Compatible Flexible Paper-Based Micro-Supercapacitor

Stretchable Supercapacitors: From Materials and Structures to Devices

Self‐healing Stretchable Composite Conductors

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