A new solid polymer electrolyte incorporating Li10GeP2S12 into a polyethylene oxide matrix for all-solid-state lithium batteries

Zhao, Yanran; Wu, Chuan; Peng, Gang; Chen, Xiaotian; Yao, Xiayin; Bai, Ying; Wu, Feng; Chen, Shaojie; Xu, Xin

doi:10.1016/j.jpowsour.2015.09.111

Cited by 391 publications

(228 citation statements)

References 37 publications

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“…The lithium ion transference number of PTECLiTFSI electrolyte estimated to be 0.39 by a steady-state current method (Fig. S8), which was slightly lower than that of polycarbonate based electrolytes ($0.5), but much higher than that of PEO based electrolyte ($0.22) [58]. This decent ionic conductivity and transference number enabled the PTEC-LiTFSI electrolytes qualified for the solid state battery operated at room temperature.…”

Section: à4mentioning

confidence: 89%

Carbonate-linked poly(ethylene oxide) polymer electrolytes towards high performance solid state lithium batteries

Cui

Liu

et al. 2017

Electrochimica Acta

134

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A B S T R A C TThe classic poly(ethylene oxide) (PEO) based solid polymer electrolyte suffers from poor ionic conductivity of ambient temperature, low lithium ion transference number and relatively narrow electrochemical window (<4.0 V vs. Li + /Li). Herein, the carbonate-linked PEO solid polymer such as poly (diethylene glycol carbonate) (PDEC) and poly(triethylene glycol carbonate) (PTEC) were explored to find out the feasibility of resolving above issues. It was proven that the optimized ionic conductivity of PTEC based electrolyte reached up to 1.12 Â 10 À5 S cm À1 at 25 C with a decent lithium ion transference number of 0.39 and a wide electrochemical window about 4.5 V vs. Li + /Li. In addition, the PTEC based Li/LiFePO 4 cell could be reversibly charged and discharged at 0.05 C-rates at ambient temperature. Moreover, the higher voltage Li/LiFe 0.2 Mn 0.8 PO 4 cell (cutoff voltage 4.35 V) possessed considerable rate capability and excellent cycling performance even at ambient temperature. Therefore, these carbonate-linked PEO electrolytes were demonstrated to be fascinating candidates for the next generation solid state lithium batteries simultaneously with high energy and high safety.

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Section: à4mentioning

confidence: 89%

Carbonate-linked poly(ethylene oxide) polymer electrolytes towards high performance solid state lithium batteries

Cui

Liu

et al. 2017

Electrochimica Acta

134

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“…Besides, micro size lithium ionic conductive ceramic Li 10 GeP 2 S 12 was used in a PEO electrolyte, which exhibited ionic conductivity of 1.18 Â 10 À5 S cm À1 and 1.21 Â 10 À3 S cm À1 at 25 and 80 C, respectively. 13 The LiFePO 4 /Li battery achieved capacities of 158, 148, 138 and 99 mA h g À1 at current rates of 0.1C, 0.2C, 0.5C and 1C at 60 C, respectively. Our previous results show that a food grade starch hosted polymer electrolyte presents both high ionic conductivity of 3.39 Â 10 À4 S cm…”

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confidence: 96%

Biocompatible and biodegradable solid polymer electrolytes for high voltage and high temperature lithium batteries

Lin

Cheng

et al. 2017

RSC Adv.

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Solid polymer electrolytes (SPEs) have significant potential to improve the energy density of lithium batteries and exhibit good flexibility, electrochemical stability and increased safety. In this study, a biocompatible and biodegradable SPE is prepared by using the natural product, wheat flour. The SPE is found to have an ionic conductivity of 2.62 Â 10 À5 S cm À1 at 25 C with a Li + ionic transference number of 0.51.

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“…This may be attributed to the SiO 2 fillers destroying the crystallization of the polymer matrix . The values of crystallinity ( χ C ) were calculated using the equation χ C = Δ H m /Δ H PEO , where Δ H m is the melting enthalpy of the electrolyte and Δ H PEO is the enthalpy of PEO perfect crystals (196.4 J g −1 ) . The relevant data according to the DSC curves are listed in Table .…”

Section: Resultsmentioning

confidence: 99%

Composite polymer electrolytes based on electrospun thermoplastic polyurethane membrane and polyethylene oxide for all‐solid‐state lithium batteries

Gao

Wang

Zhu

et al. 2018

Polymer International

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To improve the electrochemical properties and enhance the mechanical strength of solid polymer electrolytes, series of composite polymer electrolytes (CPEs) were fabricated with hybrids of thermoplastic polyurethane (TPU) electrospun membrane, polyethylene oxide (PEO), SiO2 nanoparticles and lithium bis(trifluoromethane)sulfonamide (LiTFSI). The structure and properties of the CPEs were confirmed by SEM, XRD, DSC, TGA, electrochemical impedance spectroscopy and linear sweep voltammetry. The TPU electrospun membrane as the skeleton can improve the mechanical properties of the CPEs. In addition, SiO2 particles can suppress the crystallization of PEO. The results show that the TPU‐electrospun‐membrane‐supported PEO electrolyte with 5 wt% SiO2 and 20 wt% LiTFSI (TPU/PEO‐5%SiO2‐20%Li) presents an ionic conductivity of 6.1 × 10−4 S cm−1 at 60 °C with a high tensile strength of 25.6 MPa. The battery using TPU/PEO‐5%SiO2‐20%Li as solid electrolyte and LiFePO4 as cathode shows an attractive discharge capacity of 152, 150, 121, 75, 55 and 26 mA h g−1 at C‐rates of 0.2C, 0.5C, 1C, 2C, 3C and 5C, respectively. The discharge capacity of the cell remains 110 mA h g−1 after 100 cycles at 1C at 60 °C (with a capacity retention of 91%). All the results indicate that this CPE can be applied to all‐solid‐state rechargeable lithium batteries. © 2018 Society of Chemical Industry

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A new solid polymer electrolyte incorporating Li10GeP2S12 into a polyethylene oxide matrix for all-solid-state lithium batteries

Cited by 391 publications

References 37 publications

Carbonate-linked poly(ethylene oxide) polymer electrolytes towards high performance solid state lithium batteries

Carbonate-linked poly(ethylene oxide) polymer electrolytes towards high performance solid state lithium batteries

Biocompatible and biodegradable solid polymer electrolytes for high voltage and high temperature lithium batteries

Composite polymer electrolytes based on electrospun thermoplastic polyurethane membrane and polyethylene oxide for all‐solid‐state lithium batteries

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