In this study, polypyrrole was deposited on the aluminium in different anions (C N Cr DBS–). The contribution of anions to formation of polypyrrole film was investigated by using cyclic voltammetry (CV) technique. The effect of polypyrrole film on the corrosion of aluminium was searched in 0.1 M HCI solution by using potentiostatic method. For this purpose, polarization curves were obtained, co...

In situ Raman spectra of chemisorbed azobenzene (AB) monolayers on glassy carbon (GC) electrodes were observed under potentiostatic conditions in acetonitrile (ACN) with tetrabutyl-ammonium tetrafluoroborate (TBA-BF4). The Raman intensities of these spectra were high below -1000 mV, and this is attributed to the change in absorbance of AB on GC. In this paper, we describe chemisorbed AB molecul...

The self-discharge of an electric double-layer capacitor with composite activated carbon electrodes and aqueous electrolyte (1 M MgSO4) was studied in detail. Under a long-term potentiostatic charge (stabilization), decrease the discharge capacity observed region voltages exceeding 0.8 V. process consists two phases. In initial phase, cell voltage drop is due to redistribution inside electrodes...

Aswith all amplifier circuits, certain operating conditions can cause instability of a potentiostatic circuit which maymanifest as overshoot, poorly-damped ringing, or in extreme cases full-scale oscillations at the CE output. Instability occurs when the phase shift in the circuit’s feedback loop (the path between the output and the inverting input of U1 in Fig. 2 in the main text) is sufficien...

Pitting corrosion was observed on a high purity Fe-17Cr alloy in 0.02M NaCl solution of pH 6.6 at high anodic potential (+ 550 mVISCE). Potentiostatic electrochemical noise measurements were performed, revealing the presence of a characteristic current noise below stable pitting, differing strongly from that observed 011 a series of AISI 430 type 17% Cr stainless steels, with respect to the fre...

The electrochemical behavior of copper electrode in 2M potassium sulfide solution was studied using cyclic voltammograms and potentiostatic polarization techniques. The morphology studies were applied using scanning electron microscope (SEM) and energy dispersive analysis of X-rays (EDAX) and X-ray powder diffraction. Three anodic peaks were observed in the anodic scan of cyclic voltammograms. ...

The construction and characterization of a one-compartment fructose/air biological fuel cell (BFC) based on direct electron transfer is reported. The BFC employs bilirubin oxidase and d-fructose dehydrogenase adsorbed on a cellulose-multiwall carbon nanotube (MWCNT) matrix, reconstituted with an ionic liquid, as the biocathode and the bioanode for oxygen reduction and fructose oxidation reactio...

The inhibition effect of N-benzyl-N′-phenyl thiourea (BPTU) on the corrosion of mild steel in 0.01 and 0.05 N HCl medium has been investigated by potentiostatic polarization technique. Results obtained reveal that BPTU is an efficient anodic inhibitor with greater than 94% of efficiency in the range of temperature studied. The adsorption of inhibitor on the mild steel surface obeys the Temkins’...

Automobile production plants have advanced the utilization of stainless steel alloys for exhaust mufflers due to corrosion failures associated with their operating lifespan and conditions application. Corrosion vulnerability as received heat treated (500oC 1000oC) 439 L ferritic in 3.5 M H2SO4 electrolyte at 0% 6% NaCl concentration was evaluated potentiodynamic polarization, potentiostatic mea...