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Graphene found to be one of the best alternative to carbon nanotubes due to its superior properties and distinctive nanostructure. Graphene supported palladium electrocatalysts (Pd/G) is prepared using a facile microwave reduction method; which assists reduction of graphene oxide and further leads to formation of palladium nanoparticles. The structural characteristics of the prepared materials are...
Mg-substituted olivine LiFePO4 samples with various substituted contents were prepared via a two-step method. The crystal structures of the as-prepared LiFe1−xMgxPO4 (x=0, 0.02, 0.1, 0.2) were detected by X-ray diffraction, and no impurities found. The electrochemical performances of the LiFe1−xMgxPO4 cathodes were evaluated by charge/discharge test, cyclic voltammetry, and electrochemical impedance...
Optimizing the capacitance and equivalent series resistance (ESR) has been a key issue in the fabrication of Electric double layer capacitor (EDLC). The typical method used for identifying optimal parameters in the manufacturing process reported in the literature relies on “trial-and-error” method (optimizing one factor at a time), which is ineffective, inaccurate, time consuming and not systematic...
Spinel LiMn1.8Co0.2O4 and LiMn1.2Co0.2Cr0.6O4 compounds were prepared through sol-gel method using citric acid as a chelating agent. The structural and electrochemical properties of cathode compounds were investigated by mean of X-ray diffraction, cyclic voltammetry, galvanostatic charge-discharge test and AC impedance spectra systematically. It is found that the high rate discharge capability of...
We have synthesized 8-hydroxy-7-propylquinoline (Zn(PQ)2) to use in OLED. Photoluminescence (PL) peak of Zn(PQ)2 was observed at 555 nm which showed yellow emission. In the cyclic voltammetry (CV) experiment, the HOMO and the LUMO of the Zn(PQ)2 measured to be 6.7 eV and 3.3 eV. So we expected that Zn(PQ)2 could be used as electron transporting layer (ETL) and hole blocking layer (HBL). In this study,...
The electrochemical study of certain azulene bis azo derivatives meta or para substituted is connected to the potential applications (enhanced NLO coefficients [1] and electrochromic behaviour) of this type of compounds. New compounds were studied by cyclic (CV) and differential pulse voltammetry (DPV), in TBABF4 0.1 M, CH3CN or CH3CHCl2 in order to find some rules regarding the influence of substituents...
In this paper, the processes associated with the electrodeposition of Selenium on Au substrates from nitric acidic solutions were investigated by combined electrochemical impedance spectroscopy (EIS) and cyclic voltammetry (CV) measurements. The analyses reveal that H2SeO3 in the solution is firstly adsorbed on the surface of Au electrode during cathodic polarization and subsequently reduced to Se...
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