Staff Members - Benha University
Citrated porous gel copolymer electrolyte composite for lithium ion batteries application: An investigation of ionic conduction in an optimized crystalline and porous structure
Alloys and compounds • 2015
Publication Information
Authors
Emad M. Masoud
Keywords
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Journal
Alloys and compounds
Publisher
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Volume
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Issue
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Pages
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publication.type
International
Paper Link
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Supplementary Materials
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Abstract
Citrated porous PVDF-co-HFP containing LiClO4eECeDEC is prepared with a preferential polymer
dissolution process using polyvinyl acetate to create a different porosity ratio of the optimized citrated
membrane. All citrated samples (3,5,7,9,11 wt. %) are characterized using X-ray diffraction to show that
the sample containing 7 wt. % citric acid has the lowest crystalline structure. The optimized sample is
mixed with different PVA concentrations, (4, 8, 12, 16 wt. %), and then all PVA removal copolymer
composite samples are immersed in a mixture of a liquid electrolyte containing LiClO4, EC, and DEC. The
swelling and porosity measurements show that the sample containing 16 wt. % of PVA removal has the
highest values, 68% porosity and 115% swelling. Scanning electron microscope is used to show the porous
structure of the optimized citrated copolymer electrolyte sample (16 wt. % of PVA removal) compared to
the before removing PVA one. DC-electrical conductivity measurement is performed to show the effect of
porosity on the conduction process. The sample having 8 wt. % PVA removal shows a high conductivity
value of 8 104 S cm1 compared to the other samples at room temperature. Complex impedance,
electrochemical stability and stressestrain curve are also studied. All results are collected and discussed.
dissolution process using polyvinyl acetate to create a different porosity ratio of the optimized citrated
membrane. All citrated samples (3,5,7,9,11 wt. %) are characterized using X-ray diffraction to show that
the sample containing 7 wt. % citric acid has the lowest crystalline structure. The optimized sample is
mixed with different PVA concentrations, (4, 8, 12, 16 wt. %), and then all PVA removal copolymer
composite samples are immersed in a mixture of a liquid electrolyte containing LiClO4, EC, and DEC. The
swelling and porosity measurements show that the sample containing 16 wt. % of PVA removal has the
highest values, 68% porosity and 115% swelling. Scanning electron microscope is used to show the porous
structure of the optimized citrated copolymer electrolyte sample (16 wt. % of PVA removal) compared to
the before removing PVA one. DC-electrical conductivity measurement is performed to show the effect of
porosity on the conduction process. The sample having 8 wt. % PVA removal shows a high conductivity
value of 8 104 S cm1 compared to the other samples at room temperature. Complex impedance,
electrochemical stability and stressestrain curve are also studied. All results are collected and discussed.