Galvanostatic deposition of polypyrrole in the presence of tartaric acid for electrochemical supercapacitor

Karaca, Erhan; Pekmez, Nuran Özçiçek; Pekmez, Kadi̇r

doi:10.1016/j.electacta.2014.09.136

Cited by 28 publications

(17 citation statements)

References 54 publications

(64 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…PGEs modified by electrodeposition of tartrate-doped polypyrrole [ 210 ], different aniline [ 211 – 213 ], or thiophene [ 214 – 216 ] derivatives based polymers were investigated in order to obtain electrode active materials for supercapacitors application. In recent years, graphite pencils were used for the development of interesting electronic applications like bilayer chemiresistor [ 217 ], photoconductive PbS photodetector realized by pencil graphite electrodes drawn on stone paper acting as substrate, or a hand drawn pencil electrode for determination of lead traces in water [ 73 ], dopamine [ 74 ], or p-nitrophenol [ 30 ].…”

Section: Discussionmentioning

confidence: 99%

“…In order to demonstrate the modification of a surface, different techniques are used to investigate and to compare the morphology and/or the electrochemical characteristics of the respective surface and/or of the modifier, before, during, or after the modification process. For surface morphology of bare or modified PGE investigations, different techniques of electron [ 3 , 15 , 24 , 28 , 29 , 32 , 34 , 35 , 54 , 60 , 65 – 67 , 85 , 111 , 118 – 122 , 126 – 128 , 130 , 135 , 141 – 143 , 145 – 148 , 158 , 161 , 170 , 173 , 175 , 178 , 181 – 183 , 189 , 198 , 200 , 204 , 205 , 210 , 216 , 218 , 219 ] and atomic force microscopy [ 28 , 29 , 60 , 65 – 67 , 112 , 126 , 172 , 198 , 205 ] are widely used. Sometimes, scanning electron microscopy (SEM) was coupled with energy-dispersive X-ray spectroscopy analysis [ 130 , 143 , 149 , 152 , 156 , 172 , 187 , 188 , 203 – 205 ].…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Pencil Graphite Electrodes: A Versatile Tool in Electroanalysis

David

Popa

Buleandră

2017

Journal of Analytical Methods in Chemistry

191

106

View full text Add to dashboard Cite

Due to their electrochemical and economical characteristics, pencil graphite electrodes (PGEs) gained in recent years a large applicability to the analysis of various types of inorganic and organic compounds from very different matrices. The electrode material of this type of working electrodes is constituted by the well-known and easy commercially available graphite pencil leads. Thus, PGEs are cheap and user-friendly and can be employed as disposable electrodes avoiding the time-consuming step of solid electrodes surface cleaning between measurements. When compared to other working electrodes PGEs present lower background currents, higher sensitivity, good reproducibility, and an adjustable electroactive surface area, permitting the analysis of low concentrations and small sample volumes without any deposition/preconcentration step. Therefore, this paper presents a detailed overview of the PGEs characteristics, designs and applications of bare, and electrochemically pretreated and chemically modified PGEs along with the corresponding performance characteristics like linear range and detection limit. Techniques used for bare or modified PGEs surface characterization are also reviewed.

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Pencil Graphite Electrodes: A Versatile Tool in Electroanalysis

David

Popa

Buleandră

2017

Journal of Analytical Methods in Chemistry

191

106

View full text Add to dashboard Cite

show abstract

“…This ability of EIS is the responsible that nowadays EIS has become a key experimental method in a large spectrum of fields [4]. This wide range of fields includes typically electrochemistry related fields as fuel cells [5][6][7][8][9][10][11][12], batteries [13][14][15][16][17], coatings [18][19][20], electrochemical sensors [21][22][23][24][25][26] and supercapacitors [27][28][29][30][31]. But it also includes fields not traditionally linked to electrochemistry as enzymatic kinetics [32], biochemistry [33][34][35], food quality control [36], cancer detection [37][38] and immunology [39][40], amongst others.…”

Section: Introductionmentioning

confidence: 99%

Application of a Montecarlo based quantitative Kramers-Kronig test for linearity assessment of EIS measurements

Giner-Sanz

Ortega

Pérez-Herranz

2016

Electrochimica Acta

View full text Add to dashboard Cite

Electrochemical Impedance Spectroscopy (EIS) is a very powerful tool to study the behaviour of electrochemical systems. Three conditions must be fulfilled during EIS measurements: causality, linearity, and stability. If any of these conditions is not achieved, then the conclusions obtained from the analysis of the measured spectra may be biased, or even misguided. For this reason, the verification of the compliance of these conditions is critical before accepting any analysis performed on an experimental spectrum. In a previous work, an experimental spectrum quantitative validation technique based on Kramers-Kronig relations was presented. The validation method consists in a Kramers-Kronig (KK) validation test, by equivalent electrical circuit fitting, coupled with a Montecarlo error propagation method. The validation technique builds a consistency region for a given confidence level that allows to discriminate between the individual points of the EIS spectrum that are consistent with the four fundamental hypotheses, and the inconsistent ones. The aim of this work is to validate experimentally if the quantitative validation technique is able to detect nonlinearities. In order to achieve this goal, the EIS spectrum of a markedly nonlinear system was measured experimentally using different perturbation amplitudes. The validation technique was applied to each one of the measured spectra. The method successfully managed to identify large nonlinearities; but did not detect slight ones.

show abstract

“…It has been applied to a wide range of different fields as fuel cells [5][6][7][8][9][10], batteries [11][12], coatings [13][14], electrochemical reaction kinetics [15], electrochemical sensors [16][17][18][19], supercapacitors [20][21][22] and dielectrics [23]. This electrochemical measurement technique has also been used in fields that are not traditionally linked to electrochemistry as enzymatic kinetics [24], cancer detection [25], biochemistry [26][27] and immunology [28][29] amongst others.…”

Section: Introductionmentioning

confidence: 99%

Total harmonic distortion based method for linearity assessment in electrochemical systems in the context of EIS

Giner-Sanz

Ortega

Pérez-Herranz

2015

Electrochimica Acta

View full text Add to dashboard Cite

ElsevierGiner Sanz, JJ.; Ortega Navarro, EM.; Pérez-Herranz, V. (2015). Total harmonic distortion based method for linearity assessment in electrochemical systems in the context of EIS. Electrochimica Acta. 186:598-612. doi:10.1016Acta. 186:598-612. doi:10. /j.electacta.2015 Electrochemical Impedance Spectroscopy (EIS) is a widely used electrochemical measurement technique that has been used in a great spectrum of fields since it allows deconvolving the individual physic-chemical processes that take place in a given system. Ohm's generalized law, and thus the impedance concept, are only valid if 4 conditions are fulfilled: causality, finiteness, stationarity and linearity. In the case that any of these conditions is not achieved, the obtained impedance spectra will present distortions that may lead to biased or even erroneous results and conclusions. For this reason it is crucial to verify if the 4 conditions are fulfilled, before accepting the results extracted from impedance spectra. In this work, a linearity assessment quantitative method based in the total harmonic distortion (THD) parameter is presented and verified experimentally. The experimental validation of the implemented method showed that the implemented method is able to assess quantitatively the linearity of the system. In addition, it is also able to determine the threshold frequency above which the system will not present significant nonlinear effects even for large perturbation amplitudes. It was observed that the THD method is more sensitive to nonlinear effects than the spectra themselves.

show abstract

Galvanostatic deposition of polypyrrole in the presence of tartaric acid for electrochemical supercapacitor

Cited by 28 publications

References 54 publications

Pencil Graphite Electrodes: A Versatile Tool in Electroanalysis

Pencil Graphite Electrodes: A Versatile Tool in Electroanalysis

Application of a Montecarlo based quantitative Kramers-Kronig test for linearity assessment of EIS measurements

Total harmonic distortion based method for linearity assessment in electrochemical systems in the context of EIS

Contact Info

Product

Resources

About