scholarly journals Decrease in the double layer capacitance by faradaic current

RSC Advances ◽  
2017 ◽  
Vol 7 (36) ◽  
pp. 22501-22509 ◽  
Author(s):  
Koichi Jeremiah Aoki ◽  
Jingyuan Chen ◽  
Xiangdong Zeng ◽  
Zhaohao Wang
Keyword(s):  
Charge Transfer ◽  
Double Layer ◽  
Double Layer Capacitance ◽  
Faradaic Current ◽  
The Relationship

This study describes the reverse of the well-known double layer effects on charge transfer kinetics in the relationship between a cause and an effect.

scholarly journals Electrocoagulation of whey acids: anode and cathode materials, electroactive area and polarization curves

2017 ◽  
Vol 7 (2) ◽  
pp. 89
Author(s):  
Francisco Prieto Garcia ◽  
Judith Callejas Hernandez ◽  
Judith Prieto Mendez ◽  
Yolanda Marmolejo Santillan
Keyword(s):  
Cyclic Voltammetry ◽  
Charge Transfer ◽  
Double Layer ◽  
Cathode Materials ◽  
Time Correlation ◽  
Polarization Curves ◽  
Double Layer Capacitance ◽  
Cathodic Materials ◽  
Capacitance Method ◽  
Acid Whey

<p><span lang="EN-US">Anode (Al and Fe) and cathode (graphite and Ti/RuO<sub>2</sub>) materials have been tested for electrocoagulation (EC) and purification of the acid whey. The electroactive areas (EA) of electrodes were calculated by the double layer capacitance method. Experiments were performed by cyclic voltammetry, chronoamperometry and polarization experiments. Among cathodic materials, the Ti/RuO<sub>2</sub> electrode showed higher EA (2167 cm<sup>2</sup>) than graphite (1560 cm<sup>2</sup>). The Fe anode was found more stable than Al with greater charge transfer carried out in less time. Correlation of these results with those obtained during preliminary tests confirmed high removals (79 %) in 8 h. For the Al electrode, 24 h were required to achieve efficiency of 49 %.</span></p>

scholarly journals Influence of digene tablet juice orally taken in on the corrosion resistance of orthodontic wire made of SS 18/8 in presence of artificial saliva

2021 ◽  
Vol 62 (3) ◽  
pp. 220-227
Author(s):  
Chandrasekaran Priya ◽  
Antony Regis ◽  
Susai Rajendran
Keyword(s):  
Corrosion Resistance ◽  
Charge Transfer ◽  
Double Layer ◽  
Artificial Saliva ◽  
Corrosion Current ◽  
Charge Transfer Resistance ◽  
Double Layer Capacitance ◽  
Orthodontic Wires ◽  
Transfer Resistance ◽  
Orthodontic Wire

Dentists make use of orthodontic wires such as SS 18/8, SS 316, Ni-Cr etc., to regulate the growth of teeth. In the saliva environment these wires undergo corrosion. Aside from this, they undergo corrosion by the food items, juices and Tablets orally in taken. Corrosion resistance of SS 18/8 alloy in artificial saliva (AS) , in the absence and presence of Digene Tablet juice, has been investigated by polarization and AC impendance techniques. It is inferred that corrosion resistance of SS 18/8 alloy in artificial saliva decreases in presence of Digene Tablet. This is exposed by decrease in Linear Polarization Resistance (LPR) value, Charge transfer resistance (Rt) value, in impedance value, and increase in corrosion current and double layer capacitance value(Cdl). In presence of Digene Tablet, the LPR value decreases from 3488228 to 1629535 Ohmcm2. The corrosion current value increases from 1.447 x10-8 to 2.637x10-8A/cm2 . The Charge transfer resistance (Rt) value decreases from 37796 to 10481Ohmcm2 . The double layer capacitance value increases from 1.349x10-10 F/cm2 to 4.866x10-10F/cm2. The impedance value decreases from 4.857 to 4.428. Hence it implies that people with orthodontic wire made of SS 18/8 alloy should avoid taking Digene Tablet juice orally.

A simple method for the optimization of the decay time in pulse polarography

1988 ◽  
Vol 53 (6) ◽  
pp. 1149-1155
Author(s):  
Jorge A. Bolzan
Keyword(s):  
Double Layer ◽  
Decay Time ◽  
Sampling Time ◽  
Simple Method ◽  
Faradaic Current ◽  
Maximum Value ◽  
Pulse Polarography ◽  
Null Value ◽  
Polarographic Current

A simple method for optimization of the minimum decay time, previous to the sampling time of the polarographic current, is described. The former should make compatible two requisites: it should be short enough for obtaining the maximum value of the faradaic current and long enough for the minimum or null value of the double layer decay current. The method is performed with the pulse polarograph only, without ancillary instruments, is fast and its accuracy is fairly comparable with earlier methods, which were more accurate but by far more involved to perform.

scholarly journals Correction to “Physicochemical Mechanisms of the Double-Layer Capacitance Dispersion and Dynamics: An Impedance Analysis”

2021 ◽  
Author(s):  
Maximilian Schalenbach ◽  
Yasin Emre Durmus ◽  
Shay A. Robinson ◽  
Hermann Tempel ◽  
Hans Kungl ◽  
...  
Keyword(s):  
Double Layer ◽  
Impedance Analysis ◽  
Double Layer Capacitance

Physicochemical Mechanisms of the Double-Layer Capacitance Dispersion and Dynamics: An Impedance Analysis

2021 ◽  
Vol 125 (10) ◽  
pp. 5870-5879
Author(s):  
Maximilian Schalenbach ◽  
Yasin Emre Durmus ◽  
Shay A. Robinson ◽  
Hermann Tempel ◽  
Hans Kungl ◽  
...  
Keyword(s):  
Double Layer ◽  
Impedance Analysis ◽  
Double Layer Capacitance
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