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High-performance gel polymer electrolytes using P(VDF-HFP) doped with appropriate porous carbon powders as the matrix for lithium-ion batteries
Porous carbon powders are prepared from raw material camellia oleifera shells by ball milling and pyrolysis processes. Poly(vinylidene fluoride-hexafluoropropylene) (P(VDF-HFP)-based gel polymer electrolytes (GPEs) doped with different proportions of porous carbon powders are successfully fabricated...
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Published in: | Ionics 2020-04, Vol.26 (4), p.1729-1737 |
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Main Authors: | , , , , , |
Format: | Article |
Language: | English |
Subjects: | |
Citations: | Items that this one cites Items that cite this one |
Online Access: | Get full text |
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Summary: | Porous carbon powders are prepared from raw material camellia oleifera shells by ball milling and pyrolysis processes. Poly(vinylidene fluoride-hexafluoropropylene) (P(VDF-HFP)-based gel polymer electrolytes (GPEs) doped with different proportions of porous carbon powders are successfully fabricated using a classical inverse phase method, which is confirmed by X-ray diffraction, thermo-gravimetric analysis, and field emission scanning electron microscope. The results show that the porous GPE-3 membrane has a high liquid uptake ratio of about 104.3%, a high decomposition temperature of 435 °C, a rapidly stabilized interface impedance to 517.6 Ω after 5 days storage time, and a high ionic conductivity of 3.921 mS cm
−1
at room temperature when the doping amount of porous carbon powders is 3.0
wt
%. Furthermore, the assembled LiCoO
2
/GPE-3/Li coin cells can deliver a high initial discharge specific capacity of 152.7 mAh g
−1
and an excellent initial coulombic efficiency of 97.27% at 0.1 C. These good properties indicate that the as-prepared GPE-3 can be used as a potential polymer electrolyte for lithium-ion batteries. |
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ISSN: | 0947-7047 1862-0760 |
DOI: | 10.1007/s11581-020-03522-8 |