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Formation of lead by reduction of electrodeposited PbO2: comparison between bulk films and nanowires fabrication
Springer Science and Business Media LLC - - 2012
Preparation and cycle performance at high temperature for Li[Ni0.5Co0.2Mn0.3]O2 coated with LiFePO4
Springer Science and Business Media LLC - Tập 14 - Trang 919-922 - 2009
Li[Ni0.5Co0.2Mn0.3]O2 coated with LiFePO4 was synthesized by a co-precipitation method. It consisted of the parent Li[Ni0.5Co0.2Mn0.3]O2 as the core and the LiFePO4 as the coating material, with an average particle diameter of 500 nm. The LiFePO4-coated Li[Ni0.5Co0.2Mn0.3]O2 showed no large initial capacity drop in the first cycle, which generally occurred with cathode materials bearing inactive c...... hiện toàn bộ
Formation of cuprous oxide layers in Cu(II) solutions containing gluconic acid
Springer Science and Business Media LLC - Tập 16 - Trang 521-527 - 2011
In accordance with thermodynamic analysis, cuprous oxide layers are formed spontaneously in the Cu|Cu(II), gluconic acid system at pH > 3.7 under open-circuit conditions. A current peak of Cu2O reduction is observed on cathodic voltammograms at ca −0.7 V, its height being dependent on the exposure time. The analysis of the charge transferred in this region yields the rate of Cu2O formation equal t...... hiện toàn bộ
Film electrode for the kinetic study of irreversible solid-to-solid reactions
Springer Science and Business Media LLC - Tập 25 - Trang 513-526 - 2020
In the last twenty years, direct electro-reduction of solid oxides in molten salt has been investigated extensively. Compared with thermodynamics, kinetics of this solid-to-solid reaction is far less concerned. In this work, Butler-Volmer model was adapted for cyclic voltammetric study of this reaction. Film electrode with three kinds of geometry was proposed to obtain kinetic parameters from the ...... hiện toàn bộ
Characteristic of hydrogen-saturated Pd-based alloys for the application in electrochemical capacitors
Springer Science and Business Media LLC - Tập 16 - Trang 2533-2539 - 2012
Hydrogen electrosorption was performed in thin electrodeposits of Pd alloys with Pt, Au, and Rh. The possibility of their application as phase charging–discharging systems was investigated. The values of specific pseudocapacitance, power, and energy were calculated for hydrogen-saturated Pd-rich electrodes for temperatures 283–313 K. The best working parameters are exhibited by Pd–Rh alloys with 8...... hiện toàn bộ
Fabrication of novel solid-state supercapacitor using a Nafion polymer membrane with graphene oxide/multiwalled carbon nanotube/polyaniline
Springer Science and Business Media LLC - Tập 21 - Trang 2833-2848 - 2017
In the current work, the effect of aniline concentration on the polymerization process and supercapacitive behavior of graphene oxide/multiwalled carbon nanotubes/polyaniline (GMP) nanocomposites were studied. Based on the obtained results, GMP nanocomposite with 0.5 M aniline (GMP5) was selected as the optimum concentration in terms of high current density and high specific capacitance. Nafion-ba...... hiện toàn bộ
Effects of oxalic acid concentration on the microstructures and properties of nano-VO2(B)
Springer Science and Business Media LLC - Tập 23 - Trang 2951-2959 - 2019
In this work, a series of VO2(B) samples were synthesized via a hydrothermal process by reducing V2O5 with different concentrations of oxalic acid. The prepared samples were characterized by X-ray powder diffraction, scanning electron microscopy, transmission electron microscopy, cyclic voltammetry, and galvanostatic charge–discharge. Furthermore, the microdefects of VO2 samples were characterized...... hiện toàn bộ
Voltammetric methods applied to identification, speciation, and quantification of analytes from works of art: an overview
Springer Science and Business Media LLC - Tập 14 - Trang 363-379 - 2009
Voltammetry of microparticles, an electrochemical methodology based on the record of the voltammetric response of sparingly soluble solids mechanically transferred to the surface of inert electrodes in contact with suitable electrolytes, is able to provide significant analytical information in the fields of conservation and restoration of cultural goods. Using this methodology, identification, spe...... hiện toàn bộ
The discrete Chebyshev algorithm for nonparametric estimation of autocorrelation function of electrochemical random time series
Springer Science and Business Media LLC - Tập 23 - Trang 2325-2330 - 2019
The discrete Chebyshev algorithm for nonparametric estimation of autocorrelation function of electrochemical random time series is presented. The algorithm is resistant to a trend of electrochemical noise. The discrete Chebyshev algorithm is tested using the model electrochemical noise corresponding to the equilibrium two-element Voigt circuit. The algorithm is used for nonparametric estimation of...... hiện toàn bộ
Nanomaterial-based electrochemical sensors for detection of glucose and insulin
Springer Science and Business Media LLC - Tập 21 - Trang 2147-2166 - 2017
Electrochemical sensors for the detection of specific biomolecules have attracted a lot of interest over the recent years due to their high sensitivity, selectivity, simple preparation and quick response. This article summarizes the recent progress related to the application of nanomaterials in electrochemical detection of glucose and insulin. We give an overview of electrode concepts based on nan...... hiện toàn bộ
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