UV curable ionogel for all-solid-state supercapacitor

Han, Juyeon; Choi, Youngkyu; Lee, Junyeong; Pyo, Seonmi; Jo, Sungjin; Yoo, Jeeyoung

doi:10.1016/j.cej.2021.129089

Cited by 31 publications

(15 citation statements)

References 49 publications

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“…Recently, our team proposed a solid electrolyte adopting PUA/[EMI][TFSI] through the novel and facile process while maintaining the free-standing properties and high ionic conductivity [ 98 ]. Most reported ion gel electrolyte fabrication methods require additional solvents.…”

Section: Ionic Liquids For Supercapacitor Electrolytesmentioning

confidence: 99%

“… ( a ) Ionic conductivities and decomposition voltages of [EMI][TFSI] and ion gel; ( b ) relaxation time and phase−angle of SC based on ion gel; ( c ) bending test of SC based on ion gel and photographs of a light-emitting diode working at 4 V; ( d ) Ragone plots of SC based on ion gel. Reprinted 2021 from [ 98 ] with permission from Elsevier. …”

Section: Figurementioning

confidence: 99%

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Ionic Liquid Electrolytes for Electrochemical Energy Storage Devices

et al. 2021

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For decades, improvements in electrolytes and electrodes have driven the development of electrochemical energy storage devices. Generally, electrodes and electrolytes should not be developed separately due to the importance of the interaction at their interface. The energy storage ability and safety of energy storage devices are in fact determined by the arrangement of ions and electrons between the electrode and the electrolyte. In this paper, the physicochemical and electrochemical properties of lithium-ion batteries and supercapacitors using ionic liquids (ILs) as an electrolyte are reviewed. Additionally, the energy storage device ILs developed over the last decade are introduced.

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Section: Ionic Liquids For Supercapacitor Electrolytesmentioning

confidence: 99%

Section: Figurementioning

confidence: 99%

Ionic Liquid Electrolytes for Electrochemical Energy Storage Devices

et al. 2021

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“…In previously reported works, it has been proved that the dependence of conductivity of ionogels on temperature is well fitted with the Vogel–Tamman–Fulcher (VTF) equation. [ 3,61 ] The fitting curve based on VTF equation showing obvious linearity indicates that the temperature‐dependent conductivity of PEI/PAA/CMC ionogels can also be described by VTF equation (Figure S18, Supporting Information). Furthermore, the conducting performance of PEI/PAA/CMC ionogels was demonstrated by serving as a conductor to drive a LED lamp (Figure 6h).…”

Section: Resultsmentioning

confidence: 99%

Highly Conductive, Transparent, Adhesive, and Self‐Healable Ionogel Based on a Deep Eutectic Solvent with Widely Adjustable Mechanical Strength

Jiang

Zhang

et al. 2022

Macromol. Rapid Commun.

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Ionogels have attracted intensive attentions as promising flexible conductive materials. However, simultaneous integration of excellent mechanical properties, high conductivity, outstanding self‐healing ability, and strong adhesiveness is still challenging. Here, an ingenious composition design is proposed to address this long‐standing challenge of ionogels. High‐performance PEI/PAA/CMC ionogels, consist of a loosely cross‐linked poly(acrylic acid) (PAA) network, dynamically cross‐linked network based on polycationic polyethyleneimine (PEI) and polyanionic PAA, and carboxymethyl cellulose (CMC) reinforcing filler, are formed in a deep eutectic solvent (DES) composed of choline chloride and urea. Benefiting from the loose PAA network and dynamic noncovalent interactions, ionogels with both highly enhanced mechanical robustness and excellent conductivity are obtained at high loading of DES, overcoming the strength‐ductility/conductivity trade‐off dilemma. By adjusting PEI/PAA mass ratio, the tensile strength and strain of PEI/PAA/CMC ionogels are effectively controlled in a wide range of 0.15–7.9 MPa and 232–1161%, respectively, while maintaining the desirable conductivity of ≈10−4 S cm−1. Besides, healed tensile strength over 2.1 MPa and adhesion strength up to 0.2 MPa are achieved for the PEI0.06/PAA0.25/CMC0.01 ionogel. The delicate design strategy provides a feasible approach to prepare ionogels with outstanding comprehensive performance, which have potential for applications in flexible electronics.

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“…Han et al synthesized ionogel by employing polyurethane acrylate oligomer and IL under UV conditions and found that the increased content of IL in the ionogel would lead to poor electrochemical stability of ionogel. [31] In contrast, higher oligomer content would result in poor ionic conductivity but high electrochemical stability. Thus, an appropriate IL-to oligomer ratio is essential for ionogel to exhibit good ionic conductivity and electrochemical windows.…”

Section: Electrochemical Stabilitymentioning

confidence: 99%

The Role of Interfaces in Ionic Liquid‐Based Hybrid Materials (Ionogels) for Sensing and Energy Applications

Suen

Elumalai

Debnath

et al. 2022

Adv Materials Inter

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Ionogels have established themselves as an intriguing type of composites, owing to their distinctive properties, including superior thermal stability, non‐flammability, tunable electrochemical stability window, and high ionic conductivity. Hybrid materials based on ionic liquids (ionogels) are held together by interfaces arising out of intermolecular interactions, including electrostatic, van der Waals, solvophobic, steric, and hydrogen bonding. The interfaces within the ionic liquid (ILs) and its multifaceted interplay with the encapsulating matrix greatly influence the physicochemical and electronic/ionic interactions within the composite resulting in exceptional characteristics, allowing for the design of ionogels for targeted applications. Though ionogels have shown superior properties comparable to neat ILs, they still exhibit relatively low mechanical strength, limiting their application in several practical technologies. Simultaneous enhancement of mechanical durability while retaining high ionic conductivity is indispensable, which requires understanding interfaces and related influencing parameters. This review provides a synergetic comprehension, focusing on the interactive forces and factors affecting the conductivity, stability, and robustness of ionogels. Correlating with interfaces, several strategies, including the implications of nanofiller incorporation on the electromechanical properties of ionogel, are also elaborated. Finally, a primer is provided on the application of ionogels in sensors and energy harvesting technologies.

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UV curable ionogel for all-solid-state supercapacitor

Cited by 31 publications

References 49 publications

Ionic Liquid Electrolytes for Electrochemical Energy Storage Devices

Ionic Liquid Electrolytes for Electrochemical Energy Storage Devices

Highly Conductive, Transparent, Adhesive, and Self‐Healable Ionogel Based on a Deep Eutectic Solvent with Widely Adjustable Mechanical Strength

The Role of Interfaces in Ionic Liquid‐Based Hybrid Materials (Ionogels) for Sensing and Energy Applications

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