A novel poly(ethylene glycol)–grafted poly(arylene ether ketone) blend micro-porous polymer electrolyte for solid-state electric double layer capacitors formed by incorporating a chitosan-based LiClO<sub>4</sub> gel electrolyte

Na, Ruiqi; Huo, Guanze; Zhang, Shuling; Huo, Pengfei; Du, Yinlong; Luan, Jingyi; Zhu, Kai; Wang, Guibin

doi:10.1039/c6ta07846j

Cited by 72 publications

(34 citation statements)

References 52 publications

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“…Then, the second crosslinked network is obtained through a simple immersion and rearrangement process. What's more, an electrolyte salt capable of providing dissociative ions in the electrolytes is required, ensuring ion diffusion onto each surface of the activated carbon porous electrode to form electric double‐layer capacitor . Herein, LiClO 4 was selected as the ionic source in the hydrogel system to form DC‐GPE because of its intrinsic stability, high ion mobility and dissociation abilities.…”

Section: Resultsmentioning

confidence: 99%

“…What's more, an electrolyte salt capable of providing dissociative ions in the electrolytes is required, ensuring ion diffusion onto each surface of the activated carbon porous electrode to form electric double-layer capacitor. [24][25] Herein, LiClO 4 was selected as the ionic source in the hydrogel system to form DC-GPE because of its intrinsic stability, high ion mobility and dissociation abilities. Figure 2 shows the effect of AA content on ionic conductivity and mechanical properties of the DC-GPE.…”

Section: Electrochemical Measurementsmentioning

confidence: 99%

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Highly Strong and Tough Double‐Crosslinked Hydrogel Electrolyte for Flexible Supercapacitors

et al. 2020

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Excellent mechanical properties are indispensable for the wide application of supercapacitors and various wearable devices. In this article, a novel double‐crosslinked hydrogel electrolyte (DC‐GPE) is prepared by the combination of the hydrophobic association of acrylamide with the amphiphilic monomer AEO‐9‐AC and the ionic complexation of acrylic acid with Fe3+ for the first time by a two‐step method. Owing to the dual energy dissipation network, the DC‐GPE exhibits an excellent tensile strength of up to 3.1 MPa, an elongation at break of more than 900 % and a toughness of 18.1 MJ m−3, which is far beyond the currently reported hydrogel electrolyte. Moreover, the ionic conductivity of the DC‐GPE achieves as high as 40.1 mS cm−1, which is 3 times higher than the corresponding LiClO4 solution electrolyte (12.3 mS cm−1). Besides, the activated carbon‐based supercapacitor assembled by the DC‐GPE shows excellent electrochemical performance, which is superior to most activated carbon‐based supercapacitors. These results demonstrate that the DC‐GPE shows a great application prospect in wearable devices like supercapacitors. Significantly, the new dual physical cross‐linking strategy improves the contradiction between the strength and the toughness of the gel electrolyte materials. And provides a new solution for preparing high‐strength as well as high‐toughness gel electrolyte.

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Section: Resultsmentioning

confidence: 99%

Section: Electrochemical Measurementsmentioning

confidence: 99%

Highly Strong and Tough Double‐Crosslinked Hydrogel Electrolyte for Flexible Supercapacitors

et al. 2020

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“…Conventional assembly method for stretchable supercapacitors mostly involves the coating of gel electrolyte on electrodes, where the gel electrolyte also serves as a separator. [4c,d,6c] However, because of the weak intermolecular interaction within gel electrolytes, they cannot effectively serve as a separator to prevent dislocation of electrodes and short circuit of supercapacitors during editing process . Therefore, a mechanically reinforced and separator‐integrated electrode is crucial for the fabrication of editable supercapacitors.…”

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confidence: 99%

“…Besides mechanical flexibility, it is essential to protect the electrodes from short circuit in an editable supercapacitor. Although PVA gel electrolyte is sufficient to act as a separator between electrodes, the weak intermolecular force in the gel electrolyte is not competent to prevent two electrodes from contact under intense mechanical cutting during editing process . To address this problem, we deposited a thin layer of nanocellulose fiber film (about 5 µm thick) on each side of MNW70 electrode via vacuum filtration (denoted as MNW70‐NCF).…”

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Editable Supercapacitors with Customizable Stretchability Based on Mechanically Strengthened Ultralong MnO₂ Nanowire Composite

et al. 2017

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Although some progress has been made on stretchable supercapacitors, traditional stretchable supercapacitors fabricated by predesigning structured electrodes for device assembling still lack the device-level editability and programmability. To adapt to wearable electronics with arbitrary configurations, it is highly desirable to develop editable supercapacitors that can be directly transferred into desirable shapes and stretchability. In this work, editable supercapacitors for customizable shapes and stretchability using electrodes based on mechanically strengthened ultralong MnO nanowire composites are developed. A supercapacitor edited with honeycomb-like structure shows a specific capacitance of 227.2 mF cm and can be stretched up to 500% without degradation of electrochemical performance, which is superior to most of the state-of-the-art stretchable supercapacitors. In addition, it maintains nearly 98% of the initial capacitance after 10 000 stretch-and-release cycles under 400% tensile strain. As a representative of concept for system integration, the editable supercapacitors are integrated with a strain sensor, and the system exhibits a stable sensing performance even under arm swing. Being highly stretchable, easily programmable, as well as connectable in series and parallel, an editable supercapacitor with customizable stretchability is promising to produce stylish energy storage devices to power various portable, stretchable, and wearable devices.

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“…The electrolyte is considered the key component determining the operating voltage, safety, and lifespan of EDLC single cells; however, the main focus of investigations on supercapacitors has been on the design and preparation of the electrode materials, whereas less research has been carried out on separator materials and electrolytes. Organic electrolytes can provide a high decomposition potential (2.5–2.7 V) to achieve a high energy density in EDLC single cells ( E cell ).…”

Section: Introductionmentioning

confidence: 99%

Crosslinked quaternized poly(arylene ether sulfone) copolymer membrane applied in an electric double‐layer capacitor for high energy density

Huo

Xun

et al. 2019

J of Applied Polymer Sci

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The low energy density of supercapacitors, especially supercapacitors based on aqueous electrolytes, is the main factor limiting their application, and the energy density is closely related to the operating potential window of the supercapacitor. The polymer electrolyte is the main contributor to the safe operation and good ion conductivity of the supercapacitor. In this study, a crosslinked quaternized poly(arylene ether sulfone) (PAES) membrane was prepared via crosslinking during membrane formation with a thermal‐only treatment and applied in an electric double‐layer capacitor (EDLC). The pre‐prepared PAES membrane formed a polymer electrolyte with 1 mol/L Li2SO4 and was then fabricated into an EDLC single cell. The properties of both the membrane and ELDC were investigated. The preferred cPAES‐N‐0.2 polymer electrolyte showed an ionic conductivity of 1.18 mS/cm. The optimized EDLC exhibited a single‐electrode gravimetric capacitance of 104.92 F/g at a current density of 1.0 A/g and a high operating potential window (1.5 V); it, thereby, achieved a high energy density of 8.20 W h/kg. The EDLC also exhibited excellent cycling properties over 3000 charge–discharge cycles. The crosslinked structures promoted the tensile strength and thermal stability of the PAES membranes; this was accompanied by a slight decrease in the ionic conductivity. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 47759.

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A novel poly(ethylene glycol)–grafted poly(arylene ether ketone) blend micro-porous polymer electrolyte for solid-state electric double layer capacitors formed by incorporating a chitosan-based LiClO₄ gel electrolyte

Abstract: A novel PAEK/PAEK-g-PEG blend MPE with a chitosan-based LiClO4 gel electrolyte was prepared and applied in an S-EDLC.

Cited by 72 publications

References 52 publications

Highly Strong and Tough Double‐Crosslinked Hydrogel Electrolyte for Flexible Supercapacitors

Highly Strong and Tough Double‐Crosslinked Hydrogel Electrolyte for Flexible Supercapacitors

Editable Supercapacitors with Customizable Stretchability Based on Mechanically Strengthened Ultralong MnO₂ Nanowire Composite

Crosslinked quaternized poly(arylene ether sulfone) copolymer membrane applied in an electric double‐layer capacitor for high energy density

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A novel poly(ethylene glycol)–grafted poly(arylene ether ketone) blend micro-porous polymer electrolyte for solid-state electric double layer capacitors formed by incorporating a chitosan-based LiClO4 gel electrolyte

Abstract: A novel PAEK/PAEK-g-PEG blend MPE with a chitosan-based LiClO4 gel electrolyte was prepared and applied in an S-EDLC.

Cited by 72 publications

References 52 publications

Highly Strong and Tough Double‐Crosslinked Hydrogel Electrolyte for Flexible Supercapacitors

Highly Strong and Tough Double‐Crosslinked Hydrogel Electrolyte for Flexible Supercapacitors

Editable Supercapacitors with Customizable Stretchability Based on Mechanically Strengthened Ultralong MnO2 Nanowire Composite

Crosslinked quaternized poly(arylene ether sulfone) copolymer membrane applied in an electric double‐layer capacitor for high energy density

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A novel poly(ethylene glycol)–grafted poly(arylene ether ketone) blend micro-porous polymer electrolyte for solid-state electric double layer capacitors formed by incorporating a chitosan-based LiClO₄ gel electrolyte

Editable Supercapacitors with Customizable Stretchability Based on Mechanically Strengthened Ultralong MnO₂ Nanowire Composite