The Na[FSA]–[C2C1im][FSA] (C2C1im+:1-ethyl-3-methylimidazolium and FSA−:bis(fluorosulfonyl)amide) ionic liquid electrolytes for sodium secondary batteries

Matsumoto, Kazuhiko; Hosokawa, T.; Nohira, Toshiyuki; Hagiwara, Rika; Fukunaga, Atsushi; Numata, Koma; Itani, Eiko; Sakai, Shoichiro; Nitta, Koji; Inazawa, Shinji

doi:10.1016/j.jpowsour.2014.04.112

Cited by 87 publications

(156 citation statements)

References 24 publications

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“…Ionic liquids based on bis(fluorosulfonyl)amide anion (FSA − ) generally have a large liquid phase temperature range, high ionic conductivity, and high electrochemical stability (9,10). Our recent studies confirmed that both inorganic (Na[FSA]-K[FSA]) (11) and organic ([C 3 C 1 pyrr][FSA] and [C 2 C 1 im][FSA] where C 3 C 1 pyrr + = N-methyl-Npropylpyrrolidinium and C 2 C 1 im + = 1-ethyl-3-methylimidazolium) (12)(13)(14) ionic liquids work as good electrolytes for Na secondary batteries.…”

Section: Introductionsupporting

confidence: 61%

Inorganic-Organic Hybrid Ionic Liquid Electrolytes for Na Secondary Batteries

2014

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Physical and electrochemical properties of the three inorganicorganic hybrid ionic liquid electrolytes for Na secondary batteries (Na[FSA]-[TMHA][FSA], Na[FSA]-[DBDM][FSA], and Na[FSA]-[[AS[4.5]][FSA], where TMHA + = trimethylhexylammonium cation, DBDM + = dibutyldimethylammonium cation, AS[4.5] + = 5-azoniaspiro[4.5]nonane, and FSA − = bis(fluorosulfonyl)amide anion) have been investigated. In all the three systems, the liquid phase is observed at room temperature in a certain range of Na[FSA] fraction. Ionic conductivity and viscosity of the three systems obey the VTF equations and the highest ionic conductivity is observed for the Na[FSA]-[[AS[4.5]][FSA] in the present series.Their electrochemical windows are ~5 V and Na metal electrodeposition/dissolution are observed around 0 V vs. Na + /Na.

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Section: Introductionsupporting

confidence: 61%

Inorganic-Organic Hybrid Ionic Liquid Electrolytes for Na Secondary Batteries

2014

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“…• C) with pyrrolidinium [FSI] based electrolytes with Li[FSI] salts, FSI allows ILs to be used in LIBs and the electrochemical windows for these ILs can extend to 6 V. 33 Despite their promise, reports are limited on the application of IL electrolytes for SIBs, [39][40][41][42][43][44] especially in combination with organic electrodes.…”

Section: Journal Of the Electrochemical Society 164 (8) H5093-h5099 mentioning

confidence: 99%

Enhanced Cycle Performance of Quinone-Based Anodes for Sodium Ion Batteries by Attachment to Ordered Mesoporous Carbon and Use of Ionic Liquid Electrolyte

Gurkan

Qiang

Chen

et al. 2017

J. Electrochem. Soc.

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Sodium ion batteries (SIBs) have emerged as a potential alternative to lithium ion batteries due to their chemical similarities. Key considerations for SIBs include energy storage capacity, lifetime, cost, and safety. Major challenges associated with high performance organic electrodes for rechargeable batteries are their poor electrical conductivity and dissolution of the active material in common electrolytes. The poor conductivity limits the rate performance, while dissolution leads to poor cycle performance and short lifetimes. Here we demonstrate a route to address these challenges in a sodium ion battery for 2,5-disodium-1,4-benzoquinone, Na 2 DBQ (organic active material), through immobilization of the Na 2 DBQ on high surface area ordered mesoporous carbon, OMC, and use of 1-methyl-3-propylpyrrolidinium bis(fluoromethylsulfonyl)imide ionic liquid (IL) electrolyte, NaFSI/[PYR13] [FSI]. These changes increase the rate capability and capacity retention after cycling when compared Na 2 DBQ anodes using standard carbonate electrolytes. At 22 • C, the inclusion of the OMC leads to similar capacities for the IL-and carbonate-electrolytes, but the improved thermal stability of the IL enables safe operation at 60 • C, which more than doubles the discharge capacities due to enhanced ion mobility and charge transfer kinetics. At 60 • C, the capacity retention was 83% for the IL-electrolyte after 300 cycles. For the materials examined here, the use of IL electrolyte does not adversely impact the performance of organic anode sodium-ion batteries and provides advantages with a wider operating temperature range and improved safety when compared to typical carbonate-based electrolytes. The move toward clean energy technologies associated with electrical vehicles and renewable energy production requires energy storage systems that are safe, reliable and economical.1,2 Lithium ion batteries (LIBs) have dominated energy storage solutions for portable devices due to their high energy density (∼200 Wh/kg). 3 The need for improved performance has fueled significant efforts in new electrode materials to enhance the energy density of LIBs. 4,5 However, the growing demands for large-scale energy storage generate questions regarding the future availability and the cost of lithium, which could adversely impact the competitiveness of intermittent energy sources.6-8 Sodium with its orders of magnitude greater natural abundance compared to Li can potentially address these availability and cost concerns, 9 but the larger atomic size (Na + : 4.44 Å 3 and Li + : 1.84 Å 3 ) and higher intrinsic mass per charge of sodium leads to lower theoretical capacity for sodium ion batteries (SIBs) in comparison to LIBs. Challenges for SIBs include improving the reversible insertion electrode materials for Na + for enhanced discharge capacity and cyclability.10 In addition to the active materials for the electrodes, the selection of the electrolyte impacts performance, safety and cost. 11A variety of carbon materials, including ordered mesoporous ca...

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“…The sample with 50 wt% IL (ILPE-5) displayed the maximum ionic conductivity of 1.69 mS cm binary IL system at this ratio is 2.6 mS cm −1 at 298 K by linear approximation from a previous work. 10 Comparison of these two values suggests that the ionic conductivity is reduced to 65% when the IL is packed into the polymer electrolyte. According to previous report, 39 SEM image.- Figure 3 shows the surface and cross sectional SEM images of the ILPE-5 film.…”

Section: Resultsmentioning

confidence: 99%

“…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).…”

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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The Na[FSA]–[C2C1im][FSA] (C2C1im+:1-ethyl-3-methylimidazolium and FSA−:bis(fluorosulfonyl)amide) ionic liquid electrolytes for sodium secondary batteries

Cited by 87 publications

References 24 publications

Inorganic-Organic Hybrid Ionic Liquid Electrolytes for Na Secondary Batteries

Inorganic-Organic Hybrid Ionic Liquid Electrolytes for Na Secondary Batteries

Enhanced Cycle Performance of Quinone-Based Anodes for Sodium Ion Batteries by Attachment to Ordered Mesoporous Carbon and Use of Ionic Liquid Electrolyte

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

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