A new strategy for preparing oligomeric ionic liquid gel polymer electrolytes for high-performance and nonflammable lithium ion batteries

Kuo, Ping Lin; Tsao, Chih Hao; Hsu, Chun Han; Chen, Szu Ting; Hsu, Huang Ming

doi:10.1016/j.memsci.2015.11.007

Cited by 114 publications

(48 citation statements)

References 26 publications

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“…The dipping of PVDF nanofiber membranes into Al 2 O 3 proved to improve the thermal stability of the produced separator and its ionic conductivity. It also shows a low discharge capacity decay, even at high discharge rates [ 111 ].…”

Section: Poly(vinylidene Fluoride) and Its Copolymersmentioning

confidence: 99%

Recent Advances in Poly(vinylidene fluoride) and Its Copolymers for Lithium-Ion Battery Separators

et al. 2018

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The separator membrane is an essential component of lithium-ion batteries, separating the anode and cathode, and controlling the number and mobility of the lithium ions. Among the polymer matrices most commonly investigated for battery separators are poly(vinylidene fluoride) (PVDF) and its copolymers poly(vinylidene fluoride-co-trifluoroethylene) (PVDF-TrFE), poly(vinylidene fluoride-co-hexafluoropropylene) (PVDF-HFP), and poly(vinylidene fluoride-cochlorotrifluoroethylene) (PVDF-CTFE), due to their excellent properties such as high polarity and the possibility of controlling the porosity of the materials through binary and ternary polymer/solvent systems, among others. This review presents the recent advances on battery separators based on PVDF and its copolymers for lithium-ion batteries. It is divided into the following sections: single polymer and co-polymers, surface modification, composites, and polymer blends. Further, a critical comparison between those membranes and other separator membranes is presented, as well as the future trends on this area.

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Section: Poly(vinylidene Fluoride) and Its Copolymersmentioning

confidence: 99%

Recent Advances in Poly(vinylidene fluoride) and Its Copolymers for Lithium-Ion Battery Separators

et al. 2018

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“…Recently, IL-based electrolytes (LiTFSI-PYR 14 TFSI) have shown an optimized upper cut-off voltage in the range of 4.8−5.1 V and 3.2−3.6 V for metallic lithium and LTO-based dual-ion cells, respectively [107][108][109]. A similar type of enhancement has been observed for trimethylhexylammonium bis(trifluoro-methane sulfonyl)imide (TMHA-TFSI), glyme, and oligomeric ILs [2,[109][110][111][112][113][114]. In contrast, Ferrari et al prepared electrochemically stable and benign electrolytes for LIBs and Li-O 2 batteries using 3-(2-(2-methoxy ethoxy)ethyl)-1-methylimidazolium TFSI (ImI 1,10201 TFSI) and 1-(2-methoxyethyl)-3-methylimidazolium TFSI (ImI 1,2O1 TFSI).…”

Section: Pristine Ionic Liquids As Electrolytesmentioning

confidence: 59%

Ionic Liquid-Based Electrolytes for Energy Storage Devices: A Brief Review on Their Limits and Applications

et al. 2020

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Since the ability of ionic liquid (IL) was demonstrated to act as a solvent or an electrolyte, IL-based electrolytes have been widely used as a potential candidate for renewable energy storage devices, like lithium ion batteries (LIBs) and supercapacitors (SCs). In this review, we aimed to present the state-of-the-art of IL-based electrolytes electrochemical, cycling, and physicochemical properties, which are crucial for LIBs and SCs. ILs can also be regarded as designer solvents to replace the more flammable organic carbonates and improve the green credentials and performance of energy storage devices, especially LIBs and SCs. This review affords an outline of the progress of ILs in energy-related applications and provides essential ideas on the emerging challenges and openings that may motivate the scientific communities to move towards IL-based energy devices. Finally, the challenges in design of the new type of ILs structures for energy and environmental applications are also highlighted.Polymers 2020, 12, 918 2 of 37 and structural stability of the ionic species are extremely crucial and responsible for the efficient outputs in energy storage devices. In the light of this fact, high current (i.e., automotive applications) operating devices are required to have storage devices that have higher power density and faster ion transport properties. Previous studies have suggested that one of the most favorable approaches to simultaneously progress the safety, along with energy and power densities, is the incorporation of ILs into the electrolyte system [11].In past decades, room temperature ionic liquids (RTILs) have been acknowledged with noteworthy attention due to their excellent miscellaneous properties, such as thermal and chemical stability, tunable structure over the wide range of operating temperature, a broad electrochemical stability window, high ionic conductivity in the range of 10 −3 -10 −2 S cm −1 at room temperature, and non-flammability as a potential candidate for EES devices, such as LIBs [12], electric double-layer SCs [13][14][15], proton exchange membrane fuel cells, and solar cells [16][17][18][19]. Using ILs as an alternative to organic electrolytes has the advantage of improving the ions' mobility, as well as eliminating the hazards associated within the organic electrolytes. Additionally, ILs often have comparable zero or negligible vapor pressure at normal temperatures due to their high thermal stability. Because of the above statements, ILs are widely used as solvents or electrolytes for energy storage applications in recent times [7,18,[20][21][22][23][24][25][26][27].Typically, ILs are organic salts, also defined as molten salts, which have a lower melting point (<100 • C) with a wide degree of variation. Moreover, they are comprised of organic cations, such as an pyridinium (PY) [28], imidazolium (Im) [29][30][31][32], pyrrolidinium (PYR) [33][34][35][36], ammonium [37], and sulfonium [38], derivatives joined inorganic or organic anions, such as BF 4 − [39,40], PF 6 − [30], triflate (...

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“…Ionic liquid electrolytes (ILEs) as a new type of quasi‐solid electrolytes (QSEs) show great potential applications in lithium batteries, solar cells, fuel cells, supercapacitors, and biosensors due to their wide electrochemical window, high ionic conductivity and low volatility . Usually, the ILE can be mainly divided into two categories, one of which is conventional polymer/ionic liquid (IL) composite electrolyte, the other is poly(ionic liquid) (PIL)/IL composite electrolyte . PILs are the most ideal matrix in the IL‐based electrolyte as they are well miscible with ILs having the similar structure units, which can inhibit the phase separation and leakage .…”

Section: Introductionmentioning

confidence: 99%

Poly(ionic liquid)‐Based Hybrid Hierarchical Free‐Standing Electrolytes with Enhanced Ion Transport and Fire Retardancy Towards Long‐Cycle‐Life and Safe Lithium Batteries

Huang

Long

et al. 2019

ChemElectroChem

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Ionic liquid electrolytes (ILEs), owing to their wide electrochemical window, high ionic conductivity, and low volatility, have been extensively applied in the field of energy storage devices. However, it is extremely significant and greatly challenging to seek the counterbalance of good mechanical properties and excellent electrochemical performances, including a high transference number of ILEs for safe flexible lithium batteries. In this work, a novel hybrid poly(ionic liquid)-based quasi-solid electrolyte containing silica nanoparticles (SiO 2 -PIL-QSE) is fabricated through the one-step in situ polymerization of the ionic liquid covalently tethered to silica nanoparticles (SiO 2 -IL-TFSI), which fills a poly(vinylidene fluoride-hexafluoropropylene) (PVdF-HFP) porous membrane prepared through phase inversion. The hybrid hierarchical porous architecture endows the SiO 2 -PIL-QSE with excellent thermal stability, good fire safety (i. e. nonflammable and low shrinkage), improved mechanical strength, and excellent electrochemical performance, including a high room-temperature ionic conductivity of 1.69 mS cm À 1 , a superior electrochemical window up to 5.5 V, as well as a high lithium-ion transference of 0.46. Accordingly, the LiFePO 4 j SiO 2 -PIL-QSE j Li cell can maintain a discharge specific capacity of 133.7 mAh g À 1 at 0.1 C at 25°C with a capacity retention ratio of 91.9 % after 400 cycles. The excellent performances and good applicability in the pouch-type battery of SiO 2 -PIL-QSE indicate a good prospect in the field of flexible solidstate polymer batteries (SSPB).[a] T.

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A new strategy for preparing oligomeric ionic liquid gel polymer electrolytes for high-performance and nonflammable lithium ion batteries

Cited by 114 publications

References 26 publications

Recent Advances in Poly(vinylidene fluoride) and Its Copolymers for Lithium-Ion Battery Separators

Recent Advances in Poly(vinylidene fluoride) and Its Copolymers for Lithium-Ion Battery Separators

Ionic Liquid-Based Electrolytes for Energy Storage Devices: A Brief Review on Their Limits and Applications

Poly(ionic liquid)‐Based Hybrid Hierarchical Free‐Standing Electrolytes with Enhanced Ion Transport and Fire Retardancy Towards Long‐Cycle‐Life and Safe Lithium Batteries

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