Study of a novel porous gel polymer electrolyte based on thermoplastic polyurethane/poly(vinylidene fluoride-co-hexafluoropropylene) by electrospinning technique
A novel electrospun gel polymer electrolyte (GPE) consisting of thermoplastic polyurethane (TPU) and poly(vinylidene fluoride-co-hexafluoropropylene) (PVDF-HFP) is prepared and investigated. Its characteristics are investigated by scanning electron microscopy (SEM), thermal analysis (TGA). The GPE s...
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Published in | Journal of power sources Vol. 263; pp. 118 - 124 |
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Main Authors | , , , , , |
Format | Journal Article |
Language | English |
Published |
Amsterdam
Elsevier B.V
01.10.2014
Elsevier |
Subjects | |
Online Access | Get full text |
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Summary: | A novel electrospun gel polymer electrolyte (GPE) consisting of thermoplastic polyurethane (TPU) and poly(vinylidene fluoride-co-hexafluoropropylene) (PVDF-HFP) is prepared and investigated. Its characteristics are investigated by scanning electron microscopy (SEM), thermal analysis (TGA). The GPE shows a maximum ionic conductivity of 4.1 × 10−3 S cm−1 with electrochemical stability up to 5.5 V versus Li+/Li at room temperature. In addition, it shows a first charge–discharge capacity of 168.8 mAh g−1 when the gel polymer electrolyte (GPE) is evaluated in a Li/PE/LiFePO4 cell under 0.1 C-rate at the first cycle. What's more, there is microscale attenuation (1%) in the 30 cycles of charge and discharge tests. The TPU/PVDF-HFP membrane has a high tensile strength (8.4 ± 0.3 MPa) and elongation at break (118.7 ± 0.2)%. With the outstanding electrochemical and mechanical performance, it is very suitable for application in polymer lithium ion batteries.
•Prepare PVDF-HFP/TPU gel polymer electrolyte by electrospinning the first time.•The ionic conductivity of the GPE is 4.1 × 10−3 S cm−1.•The membrane has a high tensile strength (8.38 MPa) and elongation (118.7%).•The PVDF-HFP/TPU GPE is very suitable for polymer lithium ion batteries. |
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Bibliography: | ObjectType-Article-2 SourceType-Scholarly Journals-1 ObjectType-Feature-1 content type line 23 ObjectType-Article-1 ObjectType-Feature-2 |
ISSN: | 0378-7753 1873-2755 |
DOI: | 10.1016/j.jpowsour.2014.03.140 |