Galvanostatic curve

FIGURE 12.10 Galvanostatic curves (1) without a reaction (2) with a reaction (3) corrected for the charging current. 

Charging curves of a different type are recorded at certain metals Instead of the horizontal sections in the galvanostatic curves, sloping segments arise, the hysteresis between the anodic and cathodic segments is larger, and the current peaks in potentiodynamic curves are more diffuse. 

Fig. 4. Changes of properties of LCO with <5 (a) Tc vs. 8 dependence for electrochemically doped LCO [267] (b) anodic charging curves for LCO in 1 m KOH solutions quasi-equilibrium data (open-circuit potentials measured after the interruption of current from [162] (1) and [266] (2) and a common galvanostatic curve [267] (3) (c) comparison of quasi-equilibrium anodic (1) and cathodic (2) charging curves [266].

The effect of ultrasound on the process of tellurium anodic dissolution in alkaline solutions was studied by the method of plotting polarization and galvanostatic curves [148]. Tests were made in NaOH solutions (concentrations of 0—20 g/L), subjected to the action of ultrasound at a frequency 17.5 kHz and using Te electrodeposited under ultrasound. The anodic polarization curves plotted without ultrasound and in its presence shifted with increased NaOH concentration towards negative values as a result of the increasing rate of Te anodic dissolution. The presence of ultrasound inhibited the process of Te anodic dissolution, probably due to the desorption of OFT anions from the anode surface. This sonoelectrodeposited Te thus showed greater corrosion resistance in alkaline solution than that deposited... 

Figure 5.3. a) Galvanostatic curve (voltage-composition and derivatives) for Li4-o-DHT showing the increase in voltage compared to Li4-p-DHT and h) retention of associated capacity according to the regime imposed (source Applied Materials Interface)... 

Figure 27.1 shows typical charging-discharge galvanostatic curves (i.e., dependences of DC potential on the charge value (or time of charging and discharge)) for one of the actual EDLC electrodes. 

For a more detailed electrochemical analysis of ECSC electrodes as compared to galvanostatic curves, same as those of other electrochemical systems, cyclic voltam-metric curves (CVs), are measured, that is, dependences of current on potential at the given potential sweep rate (V/s). Figure 27.2 shows schematic CV dependences. The upper figure shows such dependences for the electrode of an ideal EDLC, in which only EDL charging occurs. To the first approximation, these dependences are direct lines parallel to the x-axis. The lower figure shows schematic CV dependences of a PsC electrode with pseudocapacitance and EDL capacitance. 

In the work of Yue-feng et al. (2007) were measured three galvanostatic curves for three positive electrodes containing various amounts of Ru. Capacitance of PsCs grows at an increase in the content of ruthenium. Besides, these curves are close to straight lines and this confirms that electrodes with ruthenium oxides feature capacitive behavior described by Conway (1999) (see above). 

A similar behavior was found in the galvanostatic curves of ntTi02 samples with 600 nm length manufactured on commercial Ti foil (Fig. 5.14). The main difference between amorphous and... 

The potentiostatic polarization curve provides considerably more information about passivity than does the galvanostatic curve. 

Figure 1. Galvanostatic curves for pyrrole oxidation (0.9 M) in 0.1 MNaf2 4 solution atj = 4 mA/cm with different times of pretreatment. Curves a, b, c and d correspond to Znpretreated in 0.2MNa at J = 0.35 mA/cm for 20, 10, 3 and 1 min, respectively.

Schematic galvanostatic curve, (b) Schematic voltammetric curve. Prepared with data from Refs [90, 98, 102, 103, 108].

Cyclic voltammograms and galvanostatic curves obtained using activated carbon in neat PILs as well as in their mixture (Fig. 7.19) demonstrate that PIL-based... 

At 415°C, the electrochemical formation of each intermetallic crystalline silicon compound results on galvanostatic curves with a plateau. At room temperature, onty one plateau is observed in the insertion of Li, as shown in Fig. 11.13. The compound is metastable, Lii5Si4, observed by X-ray diffraction (XRD) , Raman spectroscopy, and electron microscopy at high-resolution (HREM) i at the end of discharge. At a temperature of 25°C, the... 

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