Effect of addition of 1-butyl-3-methylimidazolium thiocyanate on conductivity of Na-containing polymer electrolyte

Lee, Sujong; Park, Soo‐Jin; Kim, Seok

doi:10.1007/s11164-017-2936-1

Cited by 8 publications

(9 citation statements)

References 20 publications

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“…We also briefly discuss and compare tertiary systems which highlight the effect of additives such as molecular organic solvents and water . Polymer or gel electrolytes which are typically prepared by solvent casting or electrospinning typically include polyvinylidene fluoride (PVdF), polyethylene oxide (PEO), or poly(ethylene)glycol dimethyl ether (PEGDME), however they are not discussed herein …”

Section: Novel Physicochemical Properties For Na Energy Storagementioning

confidence: 99%

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Ionic Liquids and Organic Ionic Plastic Crystals: Advanced Electrolytes for Safer High Performance Sodium Energy Storage Technologies

Basile

Hilder

Makhlooghiazad

et al. 2018

Advanced Energy Materials

129

123

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computers and power tools, and emergent energy storage solutions for transport or for storing renewable energy in an ever-evolving 'smart grid'. Each of these products requires diverse battery technologies, with many batteries well-suited for specific cases, e.g., Li-ion batteries for the electrification of vehicles due to their light weight and therefore intrinsic energy density (typically 100-265 Wh kg −1 ). In fact, the adoption and penetration of electric vehicles (EVs) in the transport market is quickly becoming synonymous with battery research, with advanced lithium technologies such as lithium-sulfur (Li-S) and lithium-oxygen (Li-O 2 ) envisaged as the next generation of batteries to power our vehicles (theoretical energy densities of 2567 and 3505 Wh kg −1 respectively). [3] Lithium technologies power many of our modern devices and so are well understood, however sodium chemistries share commonalities. They are also well known because both Li and Na batteries were investigated in tandem near the end of the last century prior to the commercialization of Li-ion by Sony. [2,4] In fact, Sodium battery energy storage systems (ESS) precede Li-ion, with the description of a β-Al 2 O 3 Na + ion conducting solid electrolyte in the 1960s by Kummer and Weber of Ford Motor Co which enabled sodium/sulfur technologies. [5] Since then, sodium technologies have found use in stationary applications and usually consist of one of two battery technologies, these are Na-S and zero emission battery research activities. [6] Both these cell chemistries require operation at elevated temperatures (≈300 °C) which enables the use of a molten sodium Electrolytes composed entirely of salts, namely, ionic liquid solvents paired with a target ion salt, have been studied extensively within lithium batteries and have recently garnered interest as advanced electrolytes for sodium chemistries. In this review, the unique properties of ionic liquid electrolytes and their solid-state analogs, organic ionic plastic crystals, are examined. Structure-property relationships, the effect of salt addition, cation and anion functionalization, and their effect upon physicochemical and thermal character are discussed. The authors discuss the use of ionic liquid electrolytes paired with organic solvents (referred to as hybrids) and briefly present the impact of using water as an additive. The majority of the literature presented herein covers studies of sodium electrolytes at Na + concentrations greater than 50 mol%, labelled as superconcentrated electrolytes, which have recently been investigated for their beneficial device performance and improved target ion mobility. The developing research of ionic liquids toward the oxygen reduction reaction is also presented toward the realization of Na-O 2 chemistries to rival that of conventional Li-ion; gaining fundamental understanding of the active species during discharge, its resultant nucleation and character. Additionally, the properties of the electrode-electrolyte interface resulting from the interaction...

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Section: Novel Physicochemical Properties For Na Energy Storagementioning

confidence: 99%

“…due to their popularity in lithium technologies . It should also be noted that whilst the physicochemical properties of tertiary or polymer based electrolytes have not been discussed in depth thus far, a number of battery prototyping experiments have been reported …”

Section: Sodium Cells Employing Ionic Liquidsmentioning

confidence: 99%

Ionic Liquids and Organic Ionic Plastic Crystals: Advanced Electrolytes for Safer High Performance Sodium Energy Storage Technologies

Basile

Hilder

Makhlooghiazad

et al. 2018

Advanced Energy Materials

129

123

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“…Here, the authors attributed high ion-conducting properties of as-prepared GPE to the addition of BMIM-MS that can decrease the PEO crystallinity and found that investigated GPEs with high BMIM-MS contents (e.g., PEO-10 wt % NaMS-60 wt % BMIM-MS) delivered decreased ionic conductivities owing to the formation of ion pairs or higher order ionic aggregates. Similar GPE systems such as (PEO) 9 -NaTFSI-Pyr 13 TFSI and PEO-NaClO 4 -1-butyl-3-methylimidazolium thiocyanate electrolytes were also reported to show high ionic conductivities. , …”

Section: Recent Progress On Polymer Electrolytes For Sodium Battery A...mentioning

confidence: 90%

“…As a result, small molecular plasticizers have been employed to gelatinize PEO-based polymer electrolytes (i.e., GPEs), as shown in Table . For example, room-temperature ionic liquids have been adopted as the plasticizers for PEO-based polymer electrolytes because of their appealing merits including nonflammability, wide electrochemical stability windows, high ionic conductivities, and excellent thermal stabilities. − In contrast with PEO-based APEs, the ionic conductivities of PEO-based GPEs using ionic liquids (10 –4 S/cm vs 10 –6 ∼ 10 –8 S/cm) at room temperature increased by more than 2 orders of magnitude. In another study, 1-butyl-3-methylimidazoliummethylsulfate (BMIM-MS) was also added into PEO-sodium methylsulfate (NaMS) electrolytes for SBs, which delivered an ionic conductivity of up to 1.05 × 10 –4 S/cm at 30 °C.…”

Section: Recent Progress On Polymer Electrolytes For Sodium Battery A...mentioning

confidence: 99%

“…Similar GPE systems such as (PEO) 9 -NaTFSI-Pyr 13 TFSI and PEO-NaClO 4 -1-butyl-3-methylimidazolium thiocyanate electrolytes were also reported to show high ionic conductivities. 68,69 Recently, inorganic nanoparticles were also employed to further optimize the electrochemical properties of PEO/Nasalts/ionic liquids polymer electrolytes. For one study, Song et al prepared hybrid polymer electrolytes containing SiO 2 (5− 15 nm) and 1-ethyl-3-methylimidazolium bis(uorosulfonyl) imide (Emim FSI) for Na-metal batteries, 67 and reported that the resultant hybrid polymer electrolytes with the compositions of (PEO 20 -NaClO 4 -5 w % SiO 2 )-70 wt % Emim FSI showed a room-temperature ionic conductivity of 1.3 × 10 −3 S/cm and a high Na + transference number of 0.61, and also displayed suitable mechanical strengths and wide electrochemical windows up to 4.2 V. In this study, the assembled hybrid cathode/Na cell using the composite electrolyte that exhibited a 51% capacity retention after 100 cycles at 0.05 C at room temperature.…”

Section: Polymer Electrolytes For Advanced Sbsmentioning

confidence: 99%

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Safety-Enhanced Polymer Electrolytes for Sodium Batteries: Recent Progress and Perspectives

Yang

Zhang

Zhou

et al. 2019

ACS Appl. Mater. Interfaces

122

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Sodium batteries (SBs) have aroused increasing attention due to the abundance and low cost of elemental sodium. In recent decades, intensive efforts have been under way to exploit advanced SBs for practical applications. However, conventional liquid electrolytes used in SBs suffer from serious safety hazards (high volatility, inflammability, and leakage), severe side reactions between electrodes and electrolytes, and inevitable sodium dendrite problems, which are greatly detrimental to battery performance. Notably, polymer electrolytes are recognized as the optimal solution to resolve the above-mentioned bottlenecks. Herein, we mainly summarize a series of polymer electrolytes based on polymers containing ethoxylated units, poly(vinylidene fluoride-hexafluoropropylene) (P(VDF-HFP)), poly(methyl methacrylate) (PMMA), polyacrylonitrile (PAN), poly(vinylpyrrolidone) (PVP), single-ion conductors, polysaccharides, and so on. Notably, this review demonstrates the natural merits of polymer electrolytes for SBs (such as high safety, suppression of sodium dendrite formation, and reduced electrolyte decomposition), presents the requirements for ideal polymer electrolytes for the first time, and provides concrete discussions into recent progress of various polymer electrolytes as well. Furthermore, potential challenges and perspectives of polymer electrolytes for advanced SBs are also envisioned at the end of this review. Overall, we hope this discussion will make sense to resolve fundamental research and practical issues of polymer electrolytes for advanced SBs.

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Gel Polymer Electrolytes Design for Na‐Ion Batteries

Wang

Fan

2022

Small Methods

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Na‐ion battery has the potential to be one of the best types of next‐generation energy storage devices by virtue of their cost and sustainability advantages. With the demand for high safety, the replacement of traditional organic electrolytes with polymer electrolytes can avoid electrolyte leakage and thermal instability. Polymer electrolytes, however, suffer from low ionic conductivity and large interfacial impedance. Gel polymer electrolytes (GPEs) represent an excellent balance that combines the advantages of high ionic conductivity, low interfacial impedance, high thermal stability, and flexibility. This short review summarizes the recent progress on gel polymer Na‐ion batteries, focusing on different preparation approaches and the resultant physical and electrochemical properties. Reasons for the differences in ionic conductivity, mechanical properties, interfacial properties, and thermal stability are discussed at the molecular level. This Review may offer a deep understanding of sodium‐ion GPEs and may guide the design of intermolecular interactions for high‐performance gel polymer Na‐ion batteries.

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Effect of addition of 1-butyl-3-methylimidazolium thiocyanate on conductivity of Na-containing polymer electrolyte

Cited by 8 publications

References 20 publications

Ionic Liquids and Organic Ionic Plastic Crystals: Advanced Electrolytes for Safer High Performance Sodium Energy Storage Technologies

Ionic Liquids and Organic Ionic Plastic Crystals: Advanced Electrolytes for Safer High Performance Sodium Energy Storage Technologies

Safety-Enhanced Polymer Electrolytes for Sodium Batteries: Recent Progress and Perspectives

Gel Polymer Electrolytes Design for Na‐Ion Batteries

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