scholarly journals Synthesis and characterization of a new hybrid TiO2/SiO2 filler for lithium conducting gel electrolytes

2010 ◽  
Vol 8 (6) ◽  
pp. 1311-1317 ◽  
Author(s):  
Mariusz Walkowiak ◽  
Monika Osińska ◽  
Teofil Jesionowski ◽  
Katarzyna Siwińska-Stefańska
Keyword(s):  
Vinylidene Fluoride ◽  
Sulfate Solution ◽  
Electrochemical Characteristics ◽  
Polymer Gel ◽  
Composite Polymer ◽  
Gel Electrolytes ◽  
Polymer Gel Electrolytes ◽  
Electrolyte Uptake ◽  
Li Ion ◽  
Co Precipitation

AbstractThis paper describes the synthesis and properties of a new type of ceramic fillers for composite polymer gel electrolytes. Hybrid TiO2-SiO2 ceramic powders have been obtained by co-precipitation from titanium(IV) sulfate solution using sodium silicate as the precipitating agent. The resulting submicron-size powders have been applied as fillers for composite polymer gel electrolytes for Li-ion batteries based on poly(vinylidene fluoride-co-hexafluoropropylene) (PVdF/HFP) copolymeric membranes. The powders, dry membranes and gel electrolytes have been examined structurally and electrochemically, showing favorable properties in terms of electrolyte uptake and electrochemical characteristics in Li-ion cells.

scholarly journals Li Ion Conducting Polymer Gel Electrolytes Based on Ionic Liquid/PVDF-HFP Blends

2007 ◽  
Vol 154 (11) ◽  
pp. A1048 ◽  
Author(s):  
Hui Ye ◽  
Jian Huang ◽  
Jun John Xu ◽  
Amish Khalfan ◽  
Steve G. Greenbaum
Keyword(s):  
Ionic Liquid ◽  
Conducting Polymer ◽  
Polymer Gel ◽  
Gel Electrolytes ◽  
Polymer Gel Electrolytes ◽  
Li Ion ◽  
Ion Conducting ◽  
Ion Conducting Polymer

Performance of Electric Double Layer Capacitors with Polymer Gel Electrolytes

1999 ◽  
Vol 575 ◽  
Author(s):  
Masashi Ishikawa ◽  
Takahiro Kishino ◽  
Naoji Katada ◽  
Masayuki Morita
Keyword(s):  
Double Layer ◽  
Electric Double Layer ◽  
Vinylidene Fluoride ◽  
Organic Electrolyte ◽  
Polymer Gel ◽  
Gel Electrolytes ◽  
Polymer Gel Electrolytes ◽  
Poly Vinylidene Fluoride ◽  
Double Layer Capacitors ◽  
Electric Double Layer Capacitors

ABSTRACTPolymer gel electrolytes consisting of poly(vinylidene fluoride) (PVdF), tetraethylammoniumtetrafluoroborate (TEABF4), and propylene carbonate (PC) as a plasticizer have been investigatedfor electric double layer capacitors. The PVdF gel electrolytes showed high ionic conductivity (ca.6 mS cm-1at 298 K). To assemble model capacitors with the PVdF gel electrolytes and activatedcarbon fiber cloth electrodes, a pair of the fixed electrodes was soaked in a precursor solutioncontaining PC, PVdF, and TEABF4, followed by evaporation of the PC solvent in a vacuumoven. The resulting gel electrolytes were in good contact with the electrodes. The modelcapacitors with the PVdF gel electrolytes showed a large value of capacitance and high coulombicefficiency in operation voltage ranges of 1–2 and 1–3 V. It is worth noting that the capacitors withthe PVdF electrolytes showed long voltage retention in a self-discharge test. These goodcharacteristics of our gel capacitors were comparable to those of typical double layer capacitorswith a liquid organic electrolyte containing PC and TEABF4; rather, the voltage retentivity of thePVdF gel capacitors was much superior to that of the capacitors with the organic electrolyte.

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