Effects of SiO2 Nanoparticles and Diethyl Carbonate on the Electrochemical Properties of a Fibrous Nanocomposite Polymer Electrolyte for Rechargeable Lithium Batteries

Yang, Chaoyu; Liu, H. Y.; Xia, Qingbo; Li, Z. H.; Xiao, Qizhen; Lei, Gangtie

doi:10.1007/s13369-014-1192-6

Cited by 14 publications

(11 citation statements)

References 44 publications

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“…The PVDF–TRFE/PEO separator had a much lower ionic conductivity (0.006 mS cm −1 ), as expected based on the low porosity and electrolyte uptake. This correlation between separator porosity and ionic conductivity is observed in a number of these studies …”

Section: Novel Separators and Il Electrolytessupporting

confidence: 57%

“…The 5% SiO 2 /PVDF–HFP separator was investigated with a 1 m LiBF 4 in EMIBF 4 IL electrolyte containing different amounts of DEC . As expected, based on viscosities, the ionic conductivity increased in proportion with the amount of DEC additive in the electrolyte.…”

Section: Novel Separators and Il Electrolytesmentioning

confidence: 60%

“…The separator porosity, electrolyte uptake, ionic conductivity, thermal stability, lithium SEI characteristics, and LFP | Li cell capacity were reported with LiBF 4 in EMIBF 4 IL electrolyte. The authors observed fiber diameters between 1 and 3 µm with homogeneously dispersed SiO 2 nanoparticles . The highest porosity (86%) and electrolyte uptake (469%) were directly related to the highest ionic conductivity (2.07 mS cm −1 ) as seen with the 5% SiO 2 /PVDF–HFP separator.…”

Section: Novel Separators and Il Electrolytesmentioning

confidence: 93%

“…Poly(vinylidene fluoride‐ co ‐hexafluoropropylene) (PVDF–HFP) is a popular material investigated for separators, all novel PVDF–HFP separators reviewed use the material Kynar 2801 which has a molecular weight of 477 000 g mol −1 and a VDF:HFP ratio of 88:12, except for one who uses a PVDF–HFP with the same VDF/HFP ratio but a molecular weight of 600 000 g mol −1 …”

Section: Novel Separators and Il Electrolytesmentioning

confidence: 99%

“…Yang et al investigated SiO 2 content in PVDF–HFP electrospun separators, similar to Kim et al, but with 1 m LiBF 4 in EMIBF 4 IL electrolyte. The separator porosity, electrolyte uptake, ionic conductivity, thermal stability, lithium SEI characteristics, and LFP | Li cell capacity were reported with LiBF 4 in EMIBF 4 IL electrolyte.…”

Section: Novel Separators and Il Electrolytesmentioning

confidence: 99%

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Lithium‐Ion Battery Separators for Ionic‐Liquid Electrolytes: A Review

2020

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Ionic liquids (ILs) are widely studied as a safer alternative electrolyte for lithium‐ion batteries. The properties of IL electrolytes compared to conventional electrolytes make them more thermally stable, but they also have poor wetting with commercial separators. In a lithium‐ion battery, the electrolyte should completely wet out the separator and electrodes to reduce the cell internal resistance. Investigations of cell materials with IL electrolytes have shown that the wetting issues in IL–electrolyte cells are most likely due to poor separator compatibility, not electrode compatibility. A compatible separator must be developed before IL electrolytes can be used in commercial lithium‐ion batteries. Herein, separators for IL electrolytes, including commercial and novel separators, are reviewed. Separators with different processing methods, polymers, additives, and different IL electrolytes are considered. Collated, the separator studies show a strong correlation between ionic conductivity and membrane porosity, even more than the electrolyte type. The challenge of a suitable separator for IL electrolytes is not solved yet. Herein, it is revealed that a separator for IL electrolytes will most likely require a combination of high thermal and mechanical stability polymer, ceramic additives, and an optimized manufacturing process.

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Section: Novel Separators and Il Electrolytessupporting

confidence: 57%

Section: Novel Separators and Il Electrolytesmentioning

confidence: 60%

Section: Novel Separators and Il Electrolytesmentioning

confidence: 93%

Section: Novel Separators and Il Electrolytesmentioning

confidence: 99%

Section: Novel Separators and Il Electrolytesmentioning

confidence: 99%

See 3 more Smart Citations