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Solid-polymer electrolytes are a promising alternative to widely used liquid carbonate electrolytes to deliver next generation lithium ion batteries with improved safety. However, the limited ionic conductivity and high interfacial resistance with electrodes limit their widespread use. This review aims to give an overview of the recent research on...
Electrochemical performances of LiMn2O4 (LMO) – poly (2,2,6,6-tetramethyl-1-piperinidyloxy-4-yl methacrylate) (PTMA) hybrid electrodes are investigated. Different constituent ratios are tested and the impact on the power and the cycling performances is discussed. Variable rate galvanostatic charge/discharge tests show improved energy-power performa...
Different polymer binders have been studied for applications in positive and negative electrodes of lithium-ion capacitor (LIC). The current work describes also some new approaches for changing the electrode fabrication process from organic to aqueous solvents in order to reduce the cost of the electrode making process. LIC electrodes made from Sol...
High specific surface area carbon has been modified with para-benzoquinone (p-BQ) via Friedel-Crafts reaction catalyzed by Iron(III) chloride followed by oxidation, in order to explore alternative strategies for obtaining high energy density supercapacitor materials by the combination of the double layer capacitance of carbons with the redox pseudo...
The widespread use of renewable energies as primary energy sources or the success of electric transport are goals which greatly depend on the development of suitable energy storage devices. In this regard, electrochemical technologies would fit very well the needs required for these applications if competitive devices with higher energy density and...
Impregnation is a cost-effective and scalable method for the non-covalent addition of different compounds on the surface of suitable substrates. For supercapacitors, it provides an alternative strategy for attaining higher energy densities by combining high surface area carbon electrodes with surface species adding a pseudo-capacitive contribution....
a b s t r a c t Two different carbon electrodes have been modified with 1,4,9,10-anthracenetetraone (AT) in order to produce composite electrodes combining the double layer capacitance of carbons and the redox capacity of the organic redox couple. Electrodes were prepared by impregnation of AT on both commercial high surface area functionalized car...
A novel proton conducting polymer blend was prepared by mixing poly(vinylphosphonic acid) (PVPA) with poly(1-vinylimidazole) (PVI) at various stoichiometric ratios via changing molar ratio of monomer repeating unit to achieve the highest protonation. The polymer network having the most suitable stoichiometric ratio for substantial proton conductivi...
I have fabricated a polymer film and measured tensile stregnht of the films. I would like to know what are the minimum requirement of a polymer film to be suitable for roll-to-roll production.
Thanks for help
Methods for pre-intercalation:
- Short circuiting the Li and graphite electrodes externally (the method which we apply)
- By short circuiting through an appropriate resistor
- By galvanostatic charging