Single-ion polymer electrolytes based on a delocalized polyanion for lithium batteries

Meziane, R; Bonnet, Jean-Pierre; Courty, Matthieu; Djellab, Karim; Armand, Michel

doi:10.1016/j.electacta.2011.03.074

Cited by 322 publications

(297 citation statements)

References 31 publications

Supporting

Mentioning

291

Contrasting

Unclassified

Order By: Relevance

“…The common way to increase the ionic conductivity is to blend them with a polymer matrix containing soft segments like PEO, in which the polymer matrix functionalizes as a transporter of Li + ions. [64][65][66] Plasticized single lithium-ion GPEs are typically prepared by swelling the resulting electrolyte membranes in PC or the mixed solvents of EC/DMC. [67] The developments of single lithium-ion conducting GPEs have demonstrated several advantages over the dual-ion GPEs with large LTNs close to unity, the absence of the detrimental effect of anion polarization, and the low rate of lithium dendrite growth.…”

Section: Single Lithium-ion Conducting Gpesmentioning

confidence: 99%

Gel Polymer Electrolytes for Electrochemical Energy Storage

Cheng

Pan

Zhao

et al. 2017

Advanced Energy Materials

718

554

View full text Add to dashboard Cite

storage devices with adjustable shapes and high flexibility, which is promising for the burgeoning portable and wearable electronics. [7][8][9] Furthermore, the flexibility and elasticity of GPEs are also prone to tolerate the volume change of electrode materials and the dendrites of lithium metal during charge and discharge processes. [10][11][12][13] As a consequence, GPEs have become one of the most desirable alternatives among various electrolytes for the electrochemical energy storage devices, and significant progress has been made in lithium-ion batteries (LIBs), supercapacitors (SCs), lithium-oxygen (Li-O 2 ) batteries as well as the other kinds of electrochemical energy storage devices, such as sodium-ion batteries, lithium-sulfur batteries, fuel cells, and zinc-air batteries. [14][15][16] In order to meet the requirements of wearable devices for flexibility and deformability, more special GPEs with tough, [17] stretchable, [18] and compressible [19] functionalities have been also developed.Typically, a polymeric framework is adopted in GPEs as host material, providing high mechanical integrity. Several criteria for a good polymer host lie in: [20][21][22] (i) fast segmental motion of polymer chain; (ii) special groups promoting the dissolution of salts; (iii) low glass transition temperature (T g ); (iv) high molecular weight; (v) wide electrochemical window; (vi) high degradation temperature. Within the framework, the salts in the GPEs serve as the sources of the charge carriers, which are generally required to have large anions and low dissociation energy for easier dissociating-induced free/mobile ions. According to the types of electrolytes, there are four categories of GPEs based on proton, [23] alkaline, [24] conducting salts, and ionic liquids (ILs). [25] The criteria for an appropriate electrolyte include: [26][27][28] (i) good dissociation without forming ion pairs or ion aggregation; (ii) high thermal, chemical, and electrochemical stability; (iii) high ionic conductivity. In order to dissolve both the polymer hosts and electrolytic salts, the organic/ aqueous solvents are introduced to provide the medium for ionic conduction. A good solvent should simultaneously have high dielectric constant (ɛ > 15), donor number for more dissociation of ion and chemical and electrochemical stability. Organic solvents normally include ethylene carbonate (EC), propylene carbonate (PC), diethyl carbonate (DEC), dimethyl carbonate (DMC), dimethyl formamide (DMF), dimethyl sulphoxide, ethyl methyl carbonate, and tetrahydrofuran.To prepare a high-performance GPE, it is essential to select the species of host polymer, solvent, and electrolytic salt, and then blend them by solution or melt processes, such as casting With the booming development of flexible and wearable electronics, their safety issues and operation stabilities have attracted worldwide attentions. Compared with traditional liquid electrolytes, gel polymer electrolytes (GPEs) are preferred due to their higher safety and adaptability to the design of ...

show abstract

Section: Single Lithium-ion Conducting Gpesmentioning

confidence: 99%

Gel Polymer Electrolytes for Electrochemical Energy Storage

Cheng

Pan

Zhao

et al. 2017

Advanced Energy Materials

718

554

View full text Add to dashboard Cite

show abstract

“…KSTFSI was synthesized via a previously reported procedure [18]. Oxalyl chloride (20 g, 157 mmol) and 0.55 mL DMF were added to 250 mL anhydrous acetonitrile and stirred for five hours under a nitrogen atmosphere to form the yellow Vilsmeier-Haack complex.…”

Section: Synthesis Of Potassium 4-styrenesulfonyl(trifluoromethylsulfmentioning

confidence: 99%

Ion Transport in Solvent-Free, Crosslinked, Single-Ion Conducting Polymer Electrolytes for Post-Lithium Ion Batteries

et al. 2018

View full text Add to dashboard Cite

Solvent-free, single-ion conducting electrolytes are sought after for use in electrochemical energy storage devices. Here, we investigate the ionic conductivity and how this property is influenced by segmental mobility and conducting ion number in crosslinked single-ion conducting polyether-based electrolytes with varying tethered anion and counter-cation types. Crosslinked electrolytes are prepared by the polymerization of poly(ethylene glycol) diacrylate (PEGDA), poly(ethylene glycol) methyl ether acrylate, and ionic monomers. The ionic conductivity of the electrolytes is measured and interpreted in the context of differential scanning calorimetry and Raman spectroscopy measurements. A lithiated crosslinked electrolyte prepared with PEG 31 DA and (4-styrenesulfonyl)(trifluoromethanesulfonyl)imide (STFSI) monomers is found to have a lithium ion conductivity of 3.2 × 10 −6 and 1.8 × 10 −5 S/cm at 55 and 100 • C, respectively. The percentage of unpaired anions for this electrolyte was estimated at about 23% via Raman spectroscopy. Despite the large variances in metal cation-STFSI binding energies as predicted via density functional theory (DFT) and large variations in ionic conductivity, STFSI-based crosslinked electrolytes with the same charge density and varying cations (Li, Na, K, Mg, and Ca) were estimated to all have unpaired anion populations in the range of 19 to 29%.

show abstract

“…The changes of conductivity previously reported in systems such as PEO/CF 3 COOLi [20] and PEO/CF 3 COONa [21], have motived us to the study of the composite formed by PEO/CF 3 COONa added with Al 2 O 3 as filler, with the goal of increasing the conductivity in this system and knowing more about the interaction polymer-salt, polymerfiller and electrolyte-filler. In this paper, we studied the (PEO) 10 CF 3 COONa + x wt.% Al 2 O 3 system by XRD, Raman, and IR to obtain information about changes in crystallinity due to interactions between the components of system.…”

Section: Introductionmentioning

confidence: 99%

Structural and vibrational studies on composites polymer electrolytes (PEO)10CF3COONa + x wt.% Al2O3

Delgado-Rosero

Jurado-Meneses

Meléndez‐Lira

2017

Rev. Fac. Ing. Univ. Antioquia

View full text Add to dashboard Cite

ABSTRACT:Composites formed by combinations of polyethylene oxide (PEO) and sodium trifluoroacetate (CF 3 COONa) with different aluminum oxide (Al 2 O 3 ) concentrations were synthetized. Infrared (IR), Raman spectroscopy, X ray diffraction (XRD) and atomic force microscopy (AFM) analyses, were performed to characterize the composites. Changes on the XRD intensity peaks, and variations in intensity and position of some peaks in Raman and IR spectroscopy were observed for different concentrations of added Al 2 O 3 . The decrease in the XRD peaks of the PEO when it is combined with the salt, revealed that crystallinity in polymer was reduced, being lower when the alumina is added. The increase in roughness root medium square (R RMS ) observed by AFM when Al 2 O 3 was added, agree with reduction in crystallinity observed with XRD studies. Changes in the structure of PEO showed in the absorption lines IR and Raman, due to addition of CF 3 COONa salt and Al 2 O 3 filler, have been attributed to the interactions between the electrolyte and the filler. RESUMEN:Se sintetizaron compósitos formados entre polióxido de etileno (PEO) y trifluoroacetato de sodio (PEO 10 CF 3 COONa) con diferentes concentraciones de óxido de aluminio (Al 2 O 3 ). Los compósitos fueron caracterizados por espectroscopía infrarroja (IR), espectroscopía Raman, difracción de rayos X (XRD) y microscopía de fuerza atómica (AFM). Las combinaciones del electrolito sólido PEO 10 CF 3 COONa con diferentes concentraciones de Al 2 O 3 , mostraron cambios en la intensidad de los picos de XRD, así como cambios en la intensidad y posición de algunos picos de IR y Raman. El decrecimiento de los picos del PEO en XRD, cuando este fue combinado con la sal, reveló que la cristalinidad del polímero se redujo, siendo más baja cuando se le adicionó alúmina. Se observó un incremento en la raíz cuadrática media de la rugosidad (R RMS ) obtenida por microscopia de fuerza atómica cuando se adicionó Al 2 O 3. Este incremento está en concordancia con la reducción de la cristalinidad observada con estudios de XRD. Los cambios en la estructura del PEO mostrados en las líneas de absorción de IR y Raman, debidos a la adición de CF 3 COONa y Al 2 O 3 , fueron atribuidos a interacciones entre el electrolito y el relleno Al 2 O 3 .

show abstract

Single-ion polymer electrolytes based on a delocalized polyanion for lithium batteries

Cited by 322 publications

References 31 publications

Gel Polymer Electrolytes for Electrochemical Energy Storage

Gel Polymer Electrolytes for Electrochemical Energy Storage

Ion Transport in Solvent-Free, Crosslinked, Single-Ion Conducting Polymer Electrolytes for Post-Lithium Ion Batteries

Structural and vibrational studies on composites polymer electrolytes (PEO)10CF3COONa + x wt.% Al2O3

Contact Info

Product

Resources

About