Polymer-ion interactions in PVDF@ionic liquid polymer electrolytes: A combined experimental and computational study

Silva, Flavia Cristina Assis; Ortega, Paulo F.R.; Reis, Rodrigo Alves dos; Lavall, Rodrigo L.; Costa, Luciano T.

doi:10.1016/j.electacta.2022.140831

Cited by 9 publications

(2 citation statements)

References 53 publications

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“…However, this size effect was not clearly observed in the anion-varied series. According to a study by Silva et al 20 , the EMI + cation is preferentially coordinated to the –CF 2 of the PVDF chain, while the anion interacts with the –CH 2 of the PVDF chain. A cation with a longer alkyl chain inhibits the crystallization of PVDF, and its influence is larger than that of the anion.…”

Section: Resultsmentioning

confidence: 99%

Effect of cation and anion sizes of additive ionic liquid on the crystal structure of poly(vinylidene fluoride) nanofiber

et al. 2023

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Section: Resultsmentioning

confidence: 99%

Effect of cation and anion sizes of additive ionic liquid on the crystal structure of poly(vinylidene fluoride) nanofiber

et al. 2023

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“…Wherein, the iontronic capacitive sensor has high sensitivity and stability, and the utilized ion-gel fibrous membrane can significantly improve the disadvantages of conventional capacitive materials (e.g., rigidity and brittleness) with the advantages of facile preparation and simple structure. Ionic liquid (IL) is an ionic compound consisting of anions and cations, [37][38][39][40][41] which has the feature of tunability and is one of the commonly used materials in the field of energy storage, electronic sensory devices, and energy harvesting. Previous studies have shown that ion-gel fibrous membranes prepared by doping ionic liquids into matrix polymers not only have excellent mechanical properties but also have high electrical conductivity.…”

Section: Introductionmentioning

confidence: 99%

Versatile Ion‐Gel Fibrous Membrane for Energy‐Harvesting Iontronic Skin

Liu

Zhao

Xiong

et al. 2023

Adv Funct Materials

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Developing versatile and high sensitivity sensors is beneficial for promoting flexible electronic devices and human‐machine interactive systems. Researchers are working on the exploration of various active sensing materials toward broad detection, multifunction, and low‐power consumption. Here, a versatile ion‐gel fibrous membrane is presented by electrospinning technology and utilized to construct capacitive sensors and triboelectric nanogenerator (TENG). The iontronic capacitive sensor exhibits inherently favorable sensitivity and repeatability, which retains long‐term stability after 5000 cycles. The capacitive sensor can also detect a clear pulse waveform at the human wrist and enable the mapping of pressure distribution by a capacitive sensory matrix. For the iontronic TENG, the maximum peak power is 54.56 µW and can be used to power commercial electronics. In addition, the prepared iontronic TENG array can achieve interactive, rapidly responsive, and accurate dynamic monitoring, which broadens the exploration to direct and effective sensory devices. The versatile ion‐gel fibrous membrane is promising to provide an outstanding approach for physiological detection, biomechanical energy harvesting, human‐machine interaction, and self‐powered monitoring systems.

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Textile‐Based Stretchable Supercapacitors with Liquid Metal Current Collectors

Choi,

Kim,

Kim

et al. 2023

Adv Funct Materials

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Stretchable supercapacitors (SCs) have attracted attention as energy storage devices for wearable electronics due to their excellent power performance, low heat generation, and ease of integration into clothing. This paper presents a stretchable SC composed of liquid metal current collectors on textile substrates. For the liquid metal and textile‐based supercapacitors (LM/Tex SCs), the wetting characteristics and electrical resistance of the liquid metal on different types of textile substrates are investigated. The wettability of the carbon nanotube suspension for an electrochemically active material is also affected by the chemical and structural properties of the textile substrates. The intrinsically stretchable LM/Tex SCs are fabricated by sandwiching a soft gel electrolyte layer between the two liquid metal and textile‐based electrodes. The optimized SCs based on the polyester/neoprene textile exhibit a high areal capacitance of 527.8 mF cm−2 and maintain more than 90% of their initial capacitance after 1000 repetitive stretching cycles. Finally, it is demonstrated that the LM/Tex SC is readily integrated into a shirt and reliably supplies electrical energy to light up a light‐emitting diode even under human motion.

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Polymer-ion interactions in PVDF@ionic liquid polymer electrolytes: A combined experimental and computational study

Cited by 9 publications

References 53 publications

Effect of cation and anion sizes of additive ionic liquid on the crystal structure of poly(vinylidene fluoride) nanofiber

Effect of cation and anion sizes of additive ionic liquid on the crystal structure of poly(vinylidene fluoride) nanofiber

Versatile Ion‐Gel Fibrous Membrane for Energy‐Harvesting Iontronic Skin

Textile‐Based Stretchable Supercapacitors with Liquid Metal Current Collectors

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