Boosting of the output voltage of a galvanic cell

Lacina, Karel; Sopoušek, Jakub; Skládal, Petr; Vanýsek, Petr

doi:10.1016/j.electacta.2018.06.080

Cited by 10 publications

(7 citation statements)

References 15 publications

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“…Voltage and electric current in a galvanic cell due to the positive electrode of copper and the negative electrode of zinc. Copper and zinc spontaneous oxidation and reduction reactions due to the presence of an acidic electrolyte based on the reaction shown in equation 3 (Austin & Seminario, 2018;Gunawan et al, 2019;Lacina et al, 2018).…”

Section: Resultsmentioning

confidence: 99%

“…Lemon Orange 2.9 0.980 (Suciyati et al, 2019) There are several factors that affect electrolysis including the distance between the electrodes, the immersed surface area and the metallic properties of the electrode material. The greater the electrode distance, the smaller the current and voltage generated (Lacina et al, 2018). The resistance between the electrodes will be smaller if the distance is getting smaller, so that it affected to the value of the electric current and voltage generated.…”

Section: Figure 3 Relationship Between Concentration and The Maximum ...mentioning

confidence: 99%

“…Spontaneous redox reactions can result in the electrical energy. A galvanic cell consists of two different metals used as anode and cathode and an acidic electrolyte solution as a source of ions that produce an electric current (Lacina et al, 2018;Mertin et al, 2021;Shevtsof et al, 2021;Sulaiman et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

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Characteristic of Ceremai Fruit Electrical Properties as Electrolyte Solution in Galvanic Cells

Meiliyadi¹,

Damayanti²,

Syuzita³

2023

jppipa, pendidikan ipa, fisika, biologi, kimia

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It has been conducted a research to analyze ceremai fruit (Phyllanthus acidus) as an electrolyte solution for galvanic cells. The materials used consisted of copper (Cu), zinc (Zn) electrodes and an electrolyte solution from ceremai fruit. Electrolyte solution with a concentration variation of 60 to 100% was obtained from pure ceremai fruit electrolyte solution mixed with aquades. In addition, the electrolyte solution is fermented in a period of 1 to 5 days. The variables measured were pH, voltage, electric current and electric power. Based on the data analysis, it was found that the value of the acidity level was proportional to the concentration where at 100% solution concentration the pH value was 4.8 and at 60% the pH value was 5.4. The greatest voltage is 1 volt that obtained when the solution is in the most acidic state or highest concentration. It is found that the greater the concentration of the solution, the smaller the pH value (the acidity level increases) the value of the voltage, current and power will increase. However, when the electrolyte solution is fermented, it appears that the pH value is inversely proportional to the voltage generated. The longer of fermentation time, the pH value will increase but the voltage value will decrease. When the electrolyte solution is fresh, the pH value is 4.8 with a voltage of 1 volt, but on the 5th day of fermentation the acidity level increases with pH value of 2.15 but the voltage decreases to 0.65 volts. This is caused by oxygen exposure at the time of measurement so that the oxygen in the solution will increase. An increase of oxygen will reduce the density of electrically charged ions so that the current will decreases and the voltage will also decrease.

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Section: Resultsmentioning

confidence: 99%

Section: Figure 3 Relationship Between Concentration and The Maximum ...mentioning

confidence: 99%

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Characteristic of Ceremai Fruit Electrical Properties as Electrolyte Solution in Galvanic Cells

Meiliyadi¹,

Damayanti²,

Syuzita³

2023

jppipa, pendidikan ipa, fisika, biologi, kimia

View full text Add to dashboard Cite

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“…However, since the overall function of these interconnected cells rely on the efficient working of the individual units, parameters such as electrolytic or ionic short‐circuit currents, limited sample volumes and spatial distribution of the cell components may cause deviations in output signal with a magnitude different from the ideal theoretical value. [ 95 , 96 ]…”

Section: Engineering Strategies For Self‐powered Sensingmentioning

confidence: 99%

Engineering Self‐Powered Electrochemical Sensors Using Analyzed Liquid Sample as the Sole Energy Source

Sailapu

Menon

2022

Advanced Science

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Many healthcare and environmental monitoring devices use electrochemical techniques to detect and quantify analytes. With sensors progressively becoming smaller—particularly in point‐of‐care (POC) devices and wearable platforms—it creates the opportunity to operate them using less energy than their predecessors. In fact, they may require so little power that can be extracted from the analyzed fluids themselves, for example, blood or sweat in case of physiological sensors and sources like river water in the case of environmental monitoring. Self‐powered electrochemical sensors (SPES) can generate a response by utilizing the available chemical species in the analyzed liquid sample. Though SPESs generate relatively low power, capable devices can be engineered by combining suitable reactions, miniaturized cell designs, and effective sensing approaches for deciphering analyte information. This review details various such sensing and engineering approaches adopted in different categories of SPES systems that solely use the power available in liquid sample for their operation. Specifically, the categories discussed in this review cover enzyme‐based systems, battery‐based systems, and ion‐selective electrode‐based systems. The review details the benefits and drawbacks with these approaches, as well as prospects of and challenges to accomplishing them.

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“…In 1799, Alessandro Volta developed the voltaic cell, i.e., the first electrochemical cell comprised of two metal discszinc and coppercalled electrodes, connected by cardboard soaked with sulfuric acid or saltwater brine as electrolyte (FABBRIZZI, 2019). Those were the first studies of storage and electrochemical energy conversion, and several others on batteries and fuel cell have been currently developed (HWANG, 2015;LACINA, 2018) . In 1836, John Frederic Daniell designed a galvanic cell using two different compartments (called half-cells) where happens semi-reactions, oxidation (in anode) and reduction (in cathode).…”

Section: Introductionmentioning

confidence: 99%

Nernst equation applied to electrochemical systems and centenary of his Nobel Prize in chemistry

Ciribelli

Colmati

Souza

2020

Int J Innov Educ Res

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Walther Hermann Nernst received the Nobel Prize in Chemistry in 1920 for the formulation of the third law of thermodynamics, thus celebrating a century in this 2020 year. His work helped the establishment of modern physical chemistry, since he researched into fields, such as thermodynamics and electrochemistry, in which the Nernst equation is included. This paper reports on several experiments that used a Daniell galvanic cell working in different electrolyte concentrations for comparing results with the theoretical values calculated by the Nernst equation. The concentration and activity coefficients values employed for zinc sulfate and copper electrolytes showed activity can replaces concentrations in thermodynamic functions, and the results are entirely consistent with experimental data. The experimental electromotive force from standard Daniell cell, for ZnSO4 and CuSO4, with unitary activity and in different concentrations at room temperature is in agreement with those from theoretical calculations. Cu2+ ion concentrations and temperature were simultaneously varied; however, the cell potential cannot be included in calculations of Nernst equation for different temperatures than 25 °C because the standard potential value was set at 25 °C. The cell potential decreases drastically when the Cu2+ concentration was reduced and the temperature was above 80 oC.

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Boosting of the output voltage of a galvanic cell

Cited by 10 publications

References 15 publications

Characteristic of Ceremai Fruit Electrical Properties as Electrolyte Solution in Galvanic Cells

Characteristic of Ceremai Fruit Electrical Properties as Electrolyte Solution in Galvanic Cells

Engineering Self‐Powered Electrochemical Sensors Using Analyzed Liquid Sample as the Sole Energy Source

Nernst equation applied to electrochemical systems and centenary of his Nobel Prize in chemistry

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