One-pot preparation of new copolymer electrolytes with tunable network structure for all-solid-state lithium battery

Chen, Bo; Xu, Qin; Huang, Zhen; Zhao, Yanran; Chen, Shaojie; Xu, Xin

doi:10.1016/j.jpowsour.2016.09.063

Cited by 66 publications

(39 citation statements)

References 54 publications

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“…[11][12][13][14][15] Various methods have been used to improve the ionic transport performance of these electrolytes including adding nanoparticles, crosslinking to make a new polymer host, and blending polymers. [14][15][16][17][18][19][20] Recently, nanotube halloysite modied electrolytes were reported to achieve ionic conductivity of 1.11 Â 10 À4 S cm…”

Section: Introductionmentioning

confidence: 99%

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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Section: Introductionmentioning

confidence: 99%

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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“…At 60 °C, the ionic conductivity of the TPU/PEO‐5%SiO 2 ‐20%Li electrolyte reached 6.1 × 10 −4 S cm −1 , while the PEO‐20%Li electrolyte without any SiO 2 filler showed only 2.2 × 10 −4 S cm −1 . The improved ionic conductivity of the CPEs may be ascribed to the highly crystalline PEO which can become partially amorphous upon addition of SiO 2 particles as revealed by the XRD results, more amorphous SiO 2 particles leading to lower crystallinity of the polymer matrix . However, the ionic conductivity decreased when the SiO 2 content reached 10 wt%.…”

Section: Resultsmentioning

confidence: 92%

“…This may be ascribed to the proper amount of SiO 2 particles being distributed in the polymer matrix homogeneously and acting as mechanical connection points leading to the enhanced mechanical properties . The mechanical strength of the SPE is one of the most important factors for safety in the use of all‐solid‐state lithium batteries . After the introduction of electrospun TPU films and SiO 2 fillers, the mechanical strength of the CPEs improved significantly, indicating that this hybrid SPE could be used in all‐solid‐state lithium batteries due to its excellent mechanical properties.…”

Section: Resultsmentioning

confidence: 98%

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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“…First, formation of the lithium dendrites on electrodes leads to serious danger due to the potential possibility of internal short circuits. Second, the electrochemical instability of the lithium electrodes causes an insignificant life cycle of batteries during repeated processes of charging/discharging [4]. …”

Section: Introductionmentioning

confidence: 99%

“…The disadvantage of PEO is amorphous-crystalline structure [4, 13, 14] that leads to the conductivity through the amorphous area of a polymer only [11, 15] above the glass transition temperature T g [6, 12, 16], and as a result, PEO has low ionic conductivity at room temperature because of the presence of high crystalline phase [4, 14, 17]. …”

Section: Introductionmentioning

confidence: 99%

Structural Peculiarities of Ion-Conductive Organic-Inorganic Polymer Composites Based on Aliphatic Epoxy Resin and Salt of Lithium Perchlorate

et al. 2017

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The article is concerned with hybrid amorphous polymers synthesized basing on epoxy oligomer of diglycide aliphatic ester of polyethylene glycol that was cured by polyethylene polyamine and lithium perchlorate salt. Structural peculiarities of organic-inorganic polymer composites were studied by differential scanning calorimetry, wide-angle X-ray spectra, infrared spectroscopic, scanning electron microscopy, elemental analysis, and transmission and reflective optical microscopy. On the one hand, the results showed that the introduction of LiClO4 salt into epoxy polymer leads to formation of the coordinative metal-polymer complexes of donor-acceptor type between central Li+ ion and ligand. On the other hand, the appearance of amorphous microinclusions, probably of inorganic nature, was also found.

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One-pot preparation of new copolymer electrolytes with tunable network structure for all-solid-state lithium battery

Cited by 66 publications

References 54 publications

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

Structural Peculiarities of Ion-Conductive Organic-Inorganic Polymer Composites Based on Aliphatic Epoxy Resin and Salt of Lithium Perchlorate

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