Enhanced energy density quasi-solid-state supercapacitor based on an ionic liquid incorporated aqueous gel polymer electrolyte with a redox-additive trimethyl sulfoxonium iodide

Hor, Abbas Ali; Yadav, Neetu; Hashmi, S.A.

doi:10.1016/j.est.2023.107227

Cited by 15 publications

(2 citation statements)

References 69 publications

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“…12 Then a non-vertical line in the mid-frequency region reflects Warburg impedance (denoted as σ 0 ), associated with controlled ion diffusion in the porous electrode. 39 The σ 0 value can be obtained by the slope of the fitted line on the dependence of the real part of the EIS ( Z ′) on the inverse square root of the angular frequency ( ω −1/2 ), 40 as shown in Fig. 6c.…”

Section: Resultsmentioning

confidence: 99%

In situ-fabricated quasi-solid polymer electrolytes incorporating an ionic liquid for flexible supercapacitors

Lu,

Wang,

et al. 2024

Sustainable Energy Fuels

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Section: Resultsmentioning

confidence: 99%

In situ-fabricated quasi-solid polymer electrolytes incorporating an ionic liquid for flexible supercapacitors

Lu,

Wang,

et al. 2024

Sustainable Energy Fuels

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“…Two main methods are employed to create ionic liquid–based polymer gel electrolytes. The first method involves direct addition of polymer into the ionic liquid to induce gelation, forming the electrolyte systems [ 13 , 14 , 15 , 16 , 17 , 18 ]. As part of this functionalized ionic liquids evolution, poly(ionic liquids) (or polymerized ionic liquids) have been investigated as an effective means to generate polymer gel electrolytes, owing to their amalgamation of polymer and ionic liquid benefits.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Polymer Gel Electrolytes for Use in MnO2 Symmetric Flexible Electrochemical Supercapacitors

Lin,

Huang,

Huang

et al. 2023

Polymers

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Flexible electrochemical supercapacitors (FESCs) are emerging as innovative energy storage systems, characterized by their stable performance, long cycle life, and portability/foldability. Crucial components of FESCs, such as electrodes and efficient electrolytes, have become the focus of extensive research. Herein, we examine deep eutectic solvent (DES)–based polymer gel systems for their cost-effective accessibility, simple synthesis, excellent biocompatibility, and exceptional thermal and electrochemical stability. We used a mixture a DES, LiClO4–2-Oxazolidinone as the electroactive species, and a polymer, either polyvinyl alcohol (PVA) or polyacrylamide (PAAM) as a redox additive/plasticizer. This combination facilitates a unique ion-transport process, enhancing the overall electrochemical performance of the polymer gel electrolyte. We manufactured and used LiClO4–2-Oxazolidinone (LO), polyvinyl alcohol–LiClO4–2-Oxazolidinone (PVA–LO), and polyacrylamide–LiClO4–2-Oxazolidinone (PAAM–LO) electrolytes to synthesize an MnO2 symmetric FESC. To evaluate their performance, we analyzed the MnO2 symmetric FESC using various electrolytes with cyclic voltammetry (CV), galvanostatic charge–discharge (GCD), and electrochemical impedance spectroscopy (EIS). The FESC featuring the PVA–LO electrolyte demonstrated superior electrochemical and mechanical performances. This solid-state MnO2 symmetric FESC exhibited a specific capacitance of 121.6 F/g within a potential window of 2.4 V. Due to the excellent ionic conductivity and the wide electrochemical operating voltage range of the PVA–LO electrolyte, a high energy density of 97.3 Wh/kg at 1200 W/kg, and a long-lasting energy storage system (89.7% capacitance retention after 5000 cycles of GCD at 2 A/g) are feasibly achieved. For practical applications, we employed the MnO2 symmetric FESCs with the PVA–LO electrolyte to power a digital watch and a light-emitting diode, further demonstrating their real-world utility.

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Energy regenerative shock absorber based on a slotted link conversion mechanism for application in the electrical bus to power the low wattages devices

et al. 2023

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Enhanced energy density quasi-solid-state supercapacitor based on an ionic liquid incorporated aqueous gel polymer electrolyte with a redox-additive trimethyl sulfoxonium iodide

Cited by 15 publications

References 69 publications

In situ-fabricated quasi-solid polymer electrolytes incorporating an ionic liquid for flexible supercapacitors

In situ-fabricated quasi-solid polymer electrolytes incorporating an ionic liquid for flexible supercapacitors

Evaluation of Polymer Gel Electrolytes for Use in MnO2 Symmetric Flexible Electrochemical Supercapacitors

Energy regenerative shock absorber based on a slotted link conversion mechanism for application in the electrical bus to power the low wattages devices

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