High-performance polymeric ionic liquid–silica hybrid ionogel electrolytes for lithium metal batteries

Li, Xiaowei; Li, Sijian; Zhang, Zhengxi; Huang, Jun; Yang, Li; Hirano, Shin‐ichi

doi:10.1039/c6ta04767j

Cited by 54 publications

(49 citation statements)

References 52 publications

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“…This is in good accordance with the DSC and XRD results from Figure , and also typically observed in amorphous ionic conductors ,. As already described, the VTF feature fits the free volume model .…”

Section: Resultssupporting

confidence: 91%

“…have firstly prepared variety of PILs, and systematically illustrated the effect of the PIL structures, including cation and anion structure, as well as the presence of networks on the thermal and electrochemical performance ,. Other research groups have also studied synthesis and properties of PILs . At present, several series of PILs, including imidazolium, pyrrolidinium, guanidinium, tetraalkylammonium, or imidazolium‐tetraalkylammonium‐based PILs, are the most commonly studied PILs in this regard.…”

Section: Introductionmentioning

confidence: 99%

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Polymeric Ionic Liquid‐poly(ethylene glycol) Composite Polymer Electrolytes for High‐Temperature Lithium‐Ion Batteries

Zhang

Yang

et al. 2017

ChemElectroChem

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A new family of composite polymer electrolytes (CPEs) is developed by blending pyrrolidinium‐based polymeric ionic liquid [P(DADMA)TFSI], poly(ethylene glycol) [PEG800], and lithium bis(trifluoromethanesulfonyl) imide (LiTFSI). The structure, thermal behavior, electrochemical properties of these CPEs, as well as their potential application in high‐temperature lithium‐ion batteries (LIBs) are studied. The FTIR result reveals the interactions among P(DADMA)TFSI, PEG800, and Li+ cations. X‐ray diffraction and differential scanning calorimetry measurements show that the as‐prepared CPEs have amorphous structures. Furthermore, CPEs exhibit satisfactory ionic conductivity, as well as high thermal and electrochemical stabilities. In addition, Li/LiFePO4 cells with the as‐prepared CPE at 0.2C rate can achieve a discharge capacity of about 150 mA h g−1 at 80oC, with good capacity retention. These findings indicate that the as‐obtained CPEs have great potential for applications as safe electrolytes in high‐temperature LIBs.

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Section: Resultssupporting

confidence: 91%

Section: Introductionmentioning

confidence: 99%

Polymeric Ionic Liquid‐poly(ethylene glycol) Composite Polymer Electrolytes for High‐Temperature Lithium‐Ion Batteries

Zhang

Yang

et al. 2017

ChemElectroChem

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“…[47] As shown in Figure 5b,awell solidified HSSE has been made by tuning the ratio of P(DADMA)-TFSI,Li-IL and TEOS.I td emonstrateshigh ionic conductivity of 5 10 À4 Scm À1 at 25 8Ca nd al ithium transferencen umber of 0.24, as well as good electrochemical and thermals tability. [47] As shown in Figure 5b,awell solidified HSSE has been made by tuning the ratio of P(DADMA)-TFSI,Li-IL and TEOS.I td emonstrateshigh ionic conductivity of 5 10 À4 Scm À1 at 25 8Ca nd al ithium transferencen umber of 0.24, as well as good electrochemical and thermals tability.…”

Section: Inorganic-liquid Hssesmentioning

confidence: 99%

“…As ar esult, the corresponding Li/HSSE/LiFePO 4 cell delivers ah igh discharge capacity of 150 mAh g À1 and good capacity retention at 0.2 C. Honma and co-workers prepared solid-andq uasi-solid-state electrolytes by varying the ratio of inorganic nanoparticles and ILs. [47] Reproduced with permission. Kim et al dispersed TiO 2 nanoparticles (< 70 nm) into aI L (Py 14 TFSI) to fabricateaHSSE, showing an ionic conductivity of 1.5 10 À3 Scm À1 at 20 8C.…”

Section: Inorganic-liquid Hssesmentioning

confidence: 99%

Recent Progress of Hybrid Solid‐State Electrolytes for Lithium Batteries

Liu

et al. 2018

Chemistry A European J

132

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Conventional liquid electrolytes for lithium batteries usually suffer from irreversible decomposition and safety concerns. Solid state electrolytes (SSEs) have been considered as the key for advanced lithium batteries with improved energy density and safety, whereas challenges remain for polymer and inorganic SSEs. Recently, hybrid solid-state electrolytes (HSSEs) that integrate the merits of different electrolyte systems have been under intensive study. Herein, we summarize the recent progress of HSSEs with different compositions and structures. The design principle of each type of HSSEs are discussed, as well as their ionic conducting mechanism, electrochemical performance and effects of compositional/structural control. Finally, challenges and perspectives are provided for the future development of HSSEs and solid-state lithium batteries.

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“…It must be noted that the properties of these hybrid electrolytes are not merely an integration of the features of both the organic and inorganic components and are also dependent on the interfacial region between the two components . Moreover, this approach results in materials with superior features and functionalities . Among the various processing techniques, a classical sol–gel route has been adopted for the preparation of hybrid electrolytes which tailors the morphology of the inorganic oxide network (mostly silica) formed in the organic polymer matrix (at molecular scale).…”

Section: Introductionmentioning

confidence: 99%

Ionic liquid‐based organic–inorganic hybrid electrolytes: Impact of in situ obtained and dispersed silica

Khurana

Chandra

2017

J Polym Sci B Polym Phys

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Organic–inorganic hybrid electrolytes based on PEO‐NaTFSI‐ionic liquid (HMIMTFSI)‐silica (in situ production via sol gel process) are being reported in this article. The variation in conductivity with ionic liquid (IL) addition has been explained on the basis of number of free TFSI anions evaluated using ATR‐IR data. The deconvolution of the IR spectra of these hybrid electrolytes has given evidence of ion‐pair formation which has been compared vis‐á‐vis the conductivity variation. The hybrid electrolyte with maximum conductivity comprises the highest number of free imide ions and has lowest glass transition temperature. FESEM has displayed a porous and layered surface morphology with dispersed silica nanoparticles. In addition, the optimized hybrid electrolyte has been compared with 5 wt% (limit of mechanical stability) ex situ silica added composite where the temperature cycling of conductivity has shown that the ex situ dispersed hybrid electrolytes do not retrace their conductivity path contrary to the in situ prepared hybrid electrolytes. This behavior has been explained to be due to the hindrance offered by the ex situ added silica in the recrystallization kinetics of PEO. © 2017 Wiley Periodicals, Inc. J. Polym. Sci., Part B: Polym. Phys. 2018, 56, 207–218

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High-performance polymeric ionic liquid–silica hybrid ionogel electrolytes for lithium metal batteries

Abstract: Hybrid ionogel electrolytes have high thermal and electrochemical stability, good ionic conductivity, and potential to suppress Li dendrite formation. Solid-state lithium metal batteries with hybrid electrolytes reveal high capacity and remarkable rate performance.

Cited by 54 publications

References 52 publications

Polymeric Ionic Liquid‐poly(ethylene glycol) Composite Polymer Electrolytes for High‐Temperature Lithium‐Ion Batteries

Polymeric Ionic Liquid‐poly(ethylene glycol) Composite Polymer Electrolytes for High‐Temperature Lithium‐Ion Batteries

Recent Progress of Hybrid Solid‐State Electrolytes for Lithium Batteries

Ionic liquid‐based organic–inorganic hybrid electrolytes: Impact of in situ obtained and dispersed silica

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