Ionic Liquids as “Green Solvent and/or Electrolyte” for Energy Interface

Wang, Zhe; He, Shuangding; Nguyen, Vincent; Riley, Kevin E.

doi:10.30919/es8d0013

Cited by 23 publications

(10 citation statements)

References 3 publications

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“…Renewable energy sources are those derived from naturally replenishing sources, including the sun, wind, storms, seas, seeds, algae, geothermal, and biodegradable polymer materials, and they have attracted great interest due to the growing oil crisis and environmental concerns [ 1 , 2 ]. Polymer electrolyte (PE) science encompasses a wide range of disciplines such as polymer science, organic chemistry, electrochemistry, and inorganic chemistry [ 3 ].…”

Section: Introductionmentioning

confidence: 99%

Development of Flexible Plasticized Ion Conducting Polymer Blend Electrolytes Based on Polyvinyl Alcohol (PVA): Chitosan (CS) with High Ion Transport Parameters Close to Gel Based Electrolytes

Sadiq

Aziz

Kadir

2022

Gels

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In the current study, flexible films of polyvinyl alcohol (PVA): chitosan (CS) solid polymer blend electrolytes (PBEs) with high ion transport property close enough to gel based electrolytes were prepared with the aid of casting methodology. Glycerol (GL) as a plasticizer and sodium bromide (NaBr) as an ionic source provider are added to PBEs. The flexible films have been examined for their structural and electrical properties. The GL content changed the brittle and solid behavior of the films to a soft manner. X-ray diffraction (XRD) and Fourier transform infrared (FTIR) methods were used to examine the structural behavior of the electrolyte films. X-ray diffraction investigation revealed that the crystalline character of PVA:CS:NaBr declined with increasing GL concentration. The FTIR investigation hypothesized the interaction between polymer mix salt systems and added plasticizer. Infrared (FTIR) band shifts and fluctuations in intensity have been found. The ion transport characteristics such as mobility, carrier density, and diffusion were successfully calculated using the experimental impedance data that had been fitted with EEC components and dielectric parameters. CS:PVA at ambient temperature has the highest ionic conductivity of 3.8 × 10 S/cm for 35 wt.% of NaBr loaded with 55 wt.% of GL. The high ionic conductivity and improved transport properties revealed the suitableness of the films for energy storage device applications. The dielectric constant and dielectric loss were higher at lower frequencies. The relaxation nature of the samples was investigated using loss tangent and electric modulus plots. The peak detected in the spectra of tanδ and M” plots and the distribution of data points are asymmetric besides the peak positions. The movements of ions are not free from the polymer chain dynamics due to viscoelastic relaxation being dominant. The distorted arcs in the Argand plot have confirmed the viscoelastic relaxation in all the prepared films.

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Section: Introductionmentioning

confidence: 99%

Development of Flexible Plasticized Ion Conducting Polymer Blend Electrolytes Based on Polyvinyl Alcohol (PVA): Chitosan (CS) with High Ion Transport Parameters Close to Gel Based Electrolytes

Sadiq

Aziz

Kadir

2022

Gels

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“…, batteries, supercapacitors) has been stimulating the quest for novel electrode materials, as well as new electrolytes. , For supercapacitor (SC) applications, various electrode materials (such as carbon materials, transition metals, and conducting polymers) and different classes of electrolytes (ranging from aqueous, organic, and redox electrolytes) have been widely studied. As an alternative to the relatively classical solvents, aprotic and protic ionic liquids (AILs and PILs) have also received a colossal interest as promising green electrolytes for SCs. , …”

Section: Introductionmentioning

confidence: 99%

Interface Properties of 2D Graphene–Polydopamine Composite Electrodes in Protic Ionic Liquid-Based Electrolytes Explored by Advanced Electrogravimetry

Bouzina

Perrot

Debiemme‐Chouvy

et al. 2022

ACS Appl. Energy Mater.

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A fundamental understanding of the processes occurring at the electrode/electrolyte interfaces is of paramount importance to enhance the performance of energy storage devices. Addressing this issue requires suitable characterization tools, due to the complex nature of such interfaces. By means of electrochemical quartz crystal microbalance (EQCM) and its advanced mode, the so-called ac-electrogravimetry, herein, we report on the interfacial properties of two-dimensional (2D) graphene−polydopamine (ERGO-PDA) composite electrodes in diverse electrolyte compositions including a protic ionic liquid (PIL), pyrrolidinium hydrogen sulfate [Pyr + ][HSO 4 − ]. We have performed a comparative study in a [Pyr + ]-[HSO 4 − ]−water binary mixture in the absence and presence of Na 2 SO 4 and compared it with the interfacial behavior of ERGO-PDA in a 0.5 M Na 2 SO 4 (pH = 2) pristine electrolyte. Our EQCM and ac-electrogravimetric analyses reveal that the [Pyr + ] ions, due to their chaotropic nature, inhibit the approach of kosmotropic Na + ions and water molecules to the interface, suppressing the contribution of electrodragged water molecules, substantially observed in the case of pristine aqueous electrolyte. Despite the dissimilarity of the charge compensation process occurring in the presence of [Pyr + ][HSO 4 − ], the ERGO-PDA electrode is able to maintain similar cycling stability (99% for 10,000 cycles at 1000 mV•s −1 ) and specific capacitance values (325 F•cm −3 ) compared with the pristine aqueous electrolyte, with the advantage of superior energy density (16.3 versus 8.7 mWh•cm −3 ) due to a noticeably enlarged potential window in [Pyr + ][HSO 4 − ]−water binary mixtures.

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“…While appreciating all advantages of supercapacitors, the design of a Supercapacitor based system faces several challenges. Most of those challenges originate because of the porous structure of the supercapacitor electrodes, diffusion effects of the ions, and charge storage on the electrode-electrolyte double-layer interface [37][38][39] . Furthermore, Figure 2 addresses the basic construction system of supercapacitors, which are embedded in two conductive plates separated by a small distance, and the gap is filled with dielectric materials.…”

Section: A Supercapacitor (Storage Employing Electrochemical)mentioning

confidence: 99%

A Critical Review on Design and Development of New Generation Energy Storage Devices

G.J.,

S.R,

A.M.

et al. 2022

ES Energy Environ.

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A next-generation technology, the Supercapacitor, has emerged with the potential to enable significant advances in energy storage. Supercapacitors are governed by the same fundamental equations as conventional capacitors but utilize higher surface area electrodes and thinner dielectrics to achieve greater capacitances. The existing review addresses a brief overview of the history, principles, and theory of operation of supercapacitors, along with various models, and significantly in current energy saving and storage. Here, a concise description of technologies and working principles of different materials utilized for supercapacitors has been provided. The main focus has been on materials like carbon-based nanomaterials, metal oxides, and conducting polymers. The performance of nanocomposites has been analyzed by parameters like energy, capacitance, power, cyclic performance, and rate capability. The use of supercapacitors in various applications is cited, and their advantages over alternative technologies are considered.

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Ionic Liquids as “Green Solvent and/or Electrolyte” for Energy Interface

Cited by 23 publications

References 3 publications

Development of Flexible Plasticized Ion Conducting Polymer Blend Electrolytes Based on Polyvinyl Alcohol (PVA): Chitosan (CS) with High Ion Transport Parameters Close to Gel Based Electrolytes

Development of Flexible Plasticized Ion Conducting Polymer Blend Electrolytes Based on Polyvinyl Alcohol (PVA): Chitosan (CS) with High Ion Transport Parameters Close to Gel Based Electrolytes

Interface Properties of 2D Graphene–Polydopamine Composite Electrodes in Protic Ionic Liquid-Based Electrolytes Explored by Advanced Electrogravimetry

A Critical Review on Design and Development of New Generation Energy Storage Devices

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