Plasticization of NaX-PEO solid polymer electrolytes by Pyr13X ionic liquids

Boschin, Andrea; Johansson, Patrik

doi:10.1016/j.electacta.2016.06.119

Cited by 40 publications

(34 citation statements)

References 38 publications

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“…Although not fully considered in this review, IL gel polymer electrolytes prepared by incorporating ILs into polymer hosts may be used for constructing safe all-solid-state Na secondary batteries owing to their excellent mechanical strengths and the low probability of leakage. [415][416][417][418] Moreover, deep eutectic solvents (DESs) and some complex-salt based electrolytes that behave like ILs could be a cheaply obtainable alternative. 149,[419][420][421] The mixing of water or organic solvents with ILs to a certain extent is also a method to ameliorate the high viscosity of ILs without sacrificing their safety.…”

Section: Discussionmentioning

confidence: 99%

Advances in sodium secondary batteries utilizing ionic liquid electrolytes

Matsumoto

Hwang

Kaushik

et al. 2019

Energy Environ. Sci.

157

138

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Section: Discussionmentioning

confidence: 99%

Advances in sodium secondary batteries utilizing ionic liquid electrolytes

Matsumoto

Hwang

Kaushik

et al. 2019

Energy Environ. Sci.

157

138

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“…Ionic liquids characterized by higher electrochemical stability, namely N‐methyl‐N‐propylpyrrolidinium (Pyr 13 ) with bis(trifluoromethanesulfonyl)imide (TFSI) and bis(fluorosulfonyl)imide (FSI) anion in combination with the PEO, and NaTFSI or NaFSI salts have been reported by Boschin and Johansson. [ 219 ] Ternary electrolytes, NaTFSI(PEO) n –Pyr 13 TFSI and NaFSI(PEO) n –Pyr 13 FSI, with different ratio of EO:Na ( n ), i.e., 6, 9, and 20 containing different wt% of IL (5, 10, and 20) were tested. The study evidenced a general increase of the conductivity value with the increase of the IL content, attributed to the increased number of ionic species, to the role of the IL in enhancing the relative amount of conduction pathways and improving the polymer chain dynamics via a plasticizing effect.…”

Section: Electrolytes For Na‐based Rechargeable Batteriesmentioning

confidence: 99%

Electrolytes and Interphases in Sodium‐Based Rechargeable Batteries: Recent Advances and Perspectives

Eshetu

Elia

Armand

et al. 2020

Advanced Energy Materials

320

258

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technologies. Unlike lithium, whose market is already very tight, sodium mineral deposits are almost infinite, evenly distributed worldwide, much easier to extract and thereby attainable at low cost. [1][2][3][4] If the realization of Na-rechargeable batteries could be practically possible, there will be nearly three orders of magnitude relaxation in the constraints on lithium-based resources, accompanied by sustainability, improved environmental benevolence, and cost reduction ( Table 1). Even more appealing is the possible use of the widely available and lighter aluminum, rather than copper, as negative current collector and hard carbon from renewable sources instead of graphite for the negative electrode. Finally, the stability of sodium-ion batteries (SIBs) in the fully discharged state would significantly enhance the safety associated with the shipment of large-format SIBs worldwide.These beneficial features of sodiumbased cells revived the research work on Na-based rechargeable batteries and accordingly captured the attention of both the academic research and industry sectors. However, similar to LIB, most of the research work in Na-based batteries have focused on the development and elaboration of negative and positive For sodium (Na)-rechargeable batteries to compete, and go beyond the currently prevailing Li-ion technologies, mastering the chemistry and accompanying phenomena is of supreme importance. Among the crucial components of the battery system, the electrolyte, which bridges the highly polarized positive and negative electrode materials, is arguably the most critical and indispensable of all. The electrolyte dictates the interfacial chemistry of the battery and the overall performance, having an influence over the practical capacity, rate capability (power), chemical/thermal stress (safety), and lifetime. In-depth knowledge of electrolyte properties provides invaluable information to improve the design, assembly, and operation of the battery. Thus, the full-scale appraisal of both tailored electrolytes and the concomitant interphases generated at the electrodes need to be prioritized. The deployment of large-format Na-based rechargeable batteries also necessitates systematic evaluation and detailed appraisal of the safety-related hazards of Na-based batteries. Hence, this review presents a comprehensive account of the progress, status, and prospect of various Na + -ion electrolytes, including solvents, salts and additives, their interphases and potential hazards.

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“…In comparison with ILPEs using other host polymers such as PEO 25 or PVdF-HFP, 42,43 the PVC-based ILPEs did not display any firstorder phase transition in the temperature between 298 and 423 K according to the DSC measurements, suggesting that the IL phase remains a liquid within the host polymer network, and that the PVC host polymer retains its form. The same behavior has been observed for methyl cellulose (MC)-based polymer electrolyte.…”

Section: Resultsmentioning

confidence: 99%

“…22,23 Very recent research also focused on PEO-based ILPEs for sodium secondary batteries. [24][25][26][27] From the fundamental viewpoint, compared to the case of Li + -based polymer electrolytes, a weaker interaction between Na + and the host poly- * Electrochemical Society Member. z E-mail: azri@salam.uitm.edu.my mer and the weaker ion-ion interaction may result in more efficient creation and transport of Na + ions as the charge carrier.…”

mentioning

confidence: 99%

Poly(vinyl chloride) Ionic Liquid Polymer Electrolyte Based on Bis(fluorosulfonyl)Amide for Sodium Secondary Batteries

Rani

Hwang

Matsumoto

et al. 2017

J. Electrochem. Soc.

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Non-flammable electrolytes have been extensively studied to improve the safety of energy storage devices. In this study, a new ionic liquid polymer electrolyte (ILPE) prepared by a cast technique using poly(vinyl chloride) (PVC) as the host polymer was examined for sodium secondary batteries. The ILPE containing 50 wt% of 1-ethyl-3-methylimidazolium bis(fluorosulfonyl)amide [C 2 C 1 im][FSA] ionic liquid showed an ionic conductivity of 5.6 mS cm −1 at 318 K. It remains stable up to 517 K based on 5 wt% loss. Stable sodium metal electrodeposition/dissolution was observed at the cathodic limit of the electrochemical window for the ILPE containing Na [FSA] Lithium secondary batteries are used in various applications such as portable electronics, consumer electronics, and auto motives. 1,2However, the uneven distribution of lithium resources might limit their feasibility in large scale energy storage systems. Consequently, sodium secondary batteries have become one of the most promising alternatives to lithium secondary batteries.3 The key advantages of using sodium-based energy storage devices are the low cost, and the abundant resources and low redox potential of sodium (E o Na + /Na = −2.71 vs. SHE; which is ∼0.3 V higher than E o Li + /Li ). While organic electrolytes are currently used in researching sodium secondary batteries, 4,5 ionic liquids (ILs) offer great advantages in terms of safety, such as low vapor pressure, low flammability, high thermal stability, high conductivity, and wide electrochemical window. 6,7 The physical and electrochemical properties of ILs in Na secondary batteries have been studied in recent works. [8][9][10][11][12] In real application, polymerization of the IL is one important technique to retain the advantages of ILs and avoid leakage. As a type of gel polymer electrolytes (GPE), the resulting "ionic liquid polymer electrolytes (ILPEs)" consists of ILs, the host polymer, and another component for electrochemical reactions (e.g alkali metal salt). 13,14 In ILPE, it is assumed that the IL phase is trapped within the polymer matrix, forming a self-standing polymer electrolyte with the ions moving in the liquid phase. The advantages of ILPE are high processability, high flexibility, and high dimensional stability that lead to the elimination of the separator. In comparison with the conventional separator, ILPE offers better capacity to trap liquid electrolytes, 15 and acts as the separator and electrolyte at the same time.One of the most challenging issues for ILPEs is improving the compatibility among the IL, the host polymer, and the third component (e.g. alkali metal salt). Most studies of ILPE for lithium secondary batteries are based this ternary system; using poly(ethylene oxide) (PEO) as a host polymer. [16][17][18][19][20][21] For sodium ion conducting ILPE, only a few candidate host polymers have been demonstrated, including poly(vinylidene difluoride) (PVdF) and poly(vinylidene fluoridehexafluoropropylene) (PVdF-HFP). 22,23 Very recent research also focused on PEO-based I...

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Plasticization of NaX-PEO solid polymer electrolytes by Pyr13X ionic liquids

Cited by 40 publications

References 38 publications

Advances in sodium secondary batteries utilizing ionic liquid electrolytes

Advances in sodium secondary batteries utilizing ionic liquid electrolytes

Electrolytes and Interphases in Sodium‐Based Rechargeable Batteries: Recent Advances and Perspectives

Poly(vinyl chloride) Ionic Liquid Polymer Electrolyte Based on Bis(fluorosulfonyl)Amide for Sodium Secondary Batteries

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