Salim Erol

Eskisehir Osmangazi University | ESOGU · Department of Chemical Engineering

A process model for impedance analysis was developed in the context of reactions and transport processes that were hypothesized to govern the performance of the Li-ion battery. At the carbon electrode, lithium ions and solvent were considered to react to form a solid-electrolyte interphase (SEI). In addition, lithium ions were assumed to diffuse th...

Although commercial screen‐printed electrodes (SPEs) are used extensively for biosensor purposes nowadays, detailed studies on characterization are still limited. In this study, the surface of the gold‐based screen‐printed electrode (SPGE) was carefully modified with self‐assembly‐monolayer through an optimized immobilization procedure. The key phy...

Robust development of energy storage materials requires a deep understanding of the relationship between the operation conditions and electrochemical properties. The influences of cell potential and environmental temperature on battery dynamics of commercially available LiNiMnCoO2(NMC)/graphite(C) coin cells were statistically investigated and disc...

Impedance spectroscopy is a powerful technique and broadly used for battery characterization. In this study, we introduce a novel machine framework we call the duplex (for paired outputs) that constructs a linear ensemble of the best k models. Several impedance spectra of commercial lithium-ion battery coin cells at various states of charge and amb...

In this study, the activated carbon was produced from hazelnut-shell wastes using a single-step chemical activation. The activated carbon with a specific surface area of 1363 m² g⁻¹ and micropore volume of 0.52 cm³ g⁻¹ was used to synthesize magnetic activated carbon to investigate the influence of the magnetization on the capacitive performance. T...

Lithium-ion batteries are fundamental energy storage devices widely used across a broad range of applications, from portable electronic devices to electric vehicles. The purpose of this study is to evaluate and understand the performance of lithium-ion batteries through impedance spectroscopy, examining cycle characterization. Impedance spectroscop...

In this study, the electrochemical performance of the electrode materials based on two commonly used binders-poly(vinylidene difluoride) (PVDF) and poly(tetrafluoroethylene) (PTFE) was introduced. The electrochemical performance of the activated carbon electrodes was explored by performing cyclic voltammetry, galvanostatic charge-discharge, and ele...

Lithium-ion (Li-ion) batteries have several advantages such as high-energy density, longer cycle life, and low maintenance requirements that currently make this battery technology the most popular choice for the ever-increasing energy-hungry needs from portable electronics to electric vehicles. Electrochemical impedance spectroscopy (EIS) is a nond...

The originality of our current work is based on the use of H3PO4 functionalized waste poplar sawdust as a supercapacitor electrode material and catalyst for NaBH4 methanolysis reaction. N2 adsorption–desorption, scanning electron microscopy with energy-dispersive X-ray spectrometry (SEM–EDX), Fourier-transform infrared spectroscopy (FT-IR), and X-r...

Impedance spectroscopy is a powerful technique and broadly used for battery characterization. In this study, we introduce a novel methodology that devise a system to utilize the experimental impedance data by processing each one of the parameters with the most favorably designated machine learning techniques. Several impedance spectra of commercial...

Bu çalışmada ikincil piller arasında yaygın olarak kullanılan AAAHR03 model 1,2 V nominal potansiyelde ve 950 mAh kapasiteye sahip ticari nikel-metal hidrit (Ni-MH) pilinin, açık devre potansiyeli, aşırı şarj durumu ve farklı potansiyellerdeki 10 kHz-10 mHz frekans aralığında empedans ölçümleri incelenip eşdeğer elektrik devresi ile birlikte değerl...

Electrochemical impedance spectroscopy (EIS) is an analytical technique with wide applications used in areas such as corrosion, biomedical devices, semiconductors, sensors, batteries, fuel cells, electrochemical capacitors, dielectric measurements, coatings, electrochromic materials, analytical chemistry, electrocatalysis. It is an easy and fast te...

In this study, open circuit potential, impedance measurements in the frequency range of 10 kHz – 10 mHz at different potentials including overcharge, and equivalent electrical circuit of the commercial AAAHR03 model nickel-metal hydride (Ni-MH) battery with 1.2 V nominal potential and 950 mAh capacity were evaluated. With the impedance responses of...

This paper describes and provides the data on the regenerated-impedance spectra that is computed from experimental results of electrochemical impedance spectroscopy measurements taken from a commercial Li-ion battery. The empirical impedance data of secondary coin type Li-ion batteries were collected in different states of charge ranging from empty...

The experimental impedance data were collected in cell potentials as 3.2V, 3.4V, 3.6V, 3.8V, 4.0V, and 4.2V (corresponding state of charge values: 0%, 3%, 8%, 40%, 78%, 100%). Impedance data is generated by a Machine Learning model.

The use of Electrochemical Impedance Spectroscopy on rechargeable Lithium-ion battery characterization is an extensively recognized non-destructive procedure for both in-situ and ex-situ analyses. In an impedance measurement for a rechargeable battery, the oscillating current with an accompanying phase angle is the response for a potential perturba...

Lithium-ion (Li-ion) batteries offer advantages such as high energy density, cycle life, low maintenance that currently make this battery technology the most popular choice for the ever increasingly energy-hungry needs of portable electronics to electric vehicles. Electrochemical impedance spectroscopy (EIS) is a non-destructive characterization to...

In this study, the activated carbon was produced from hazelnut-shell wastes using a single-step chemical activation. The activated carbon with a specific surface area of 1363 m 2 g −1 and micropore volume of 0.52 cm 3 g −1 was used to synthesize magnetic activated carbon to investigate the influence of the magnetization on the capacitive performanc...

Potassium ferricyanide, potassium ferrocyanide and their combination system are widely used redox probes for electrochemical impedance spectroscopy (EIS) characterization. In this work, electrochemical behavior of K3Fe(CN)6, K4Fe(CN)6, and K3Fe(CN)6/K4Fe(CN)6 redox probes at five different concentrations using a screen printed carbon electrode (SPC...

Two commonly used commercially available rechargeable batteries, nickel-metal hydride battery and lithium-ion battery, have been investigated by impedance spectroscopy technique, which is a fast and an effective electrochemical method. These batteries were brought to the same potential and their electrochemical impedance properties in the equal fre...

In this study, the impedance responses of commercially available and widely used rechargeable AAAHR03 Nickel-Metal Hydride (Ni-MH) battery at different potentials were investigated. The batteries were initially charged to 1.20 V under galvanostatic control. After obtaining the constant cell potential, their impedances were measured using 10 mV pert...

Potassium ferricyanide, potassium ferrocyanide, and their combination system are widely used redox probes for electrochemical impedance spectroscopy (EIS) characterization. In this work, electrochemical behavior of K3Fe(CN)6, K4Fe(CN)6, and K3Fe(CN)6/K4Fe(CN)6 redox probes at five different concentrations using a screen printed carbon electrode (SP...

Energy and energy storage materials are being more essential as the conventional energy sources deplete day after day. Biomass wastes can be used as an energy source as well as a component of energy storage materials such as supercapacitors, batteries, and so on. In this study, the activated carbon from biomass waste was produced by using the chemi...

In this study, a simulation of an electrochemical impedance spectroscopy for lithium-ion batteries was proposed. The electrochemical process was developed from battery electrode kinetics and mass transfer of mobile Li+ ions through negative and positive electrodes and electrolyte. The phenomena used in this process were represented by an equivalent...

Son yıllarda, ekran baskılı elektrotların (SPE) düşük maliyet, kullanım kolaylığı, taşınabilirlik ve basit kullanım özellikleri bu elektrotların elektrokimyasal sensör geliştirme süreçlerinde kullanımını giderek arttırmaktadır. SPE’lerin elektrokimyasal davranışlarını aydınlatmak için kullanılan analitik yöntemlerden biri dönüşümlü voltametri (CV)...

In this study, a simulation of an electrochemical impedance spectroscopy for lithium-ion batteries was proposed. The electrochemical process was developed from battery electrode kinetics and mass transfer of mobile Li+ ion through negative and positive electrodes and electrolyte. The phenomena used in this process were represented by an equivalent...

In this study, impedance responses of a lithium-ion battery and a nickel metal-hydride battery were analyzed as a function of different state of charges conditions. The physical parameters of these widely used rechargeable batteries have been extracted through an equivalent circuit model by fitting impedance data. The fit was excellent. The regress...

Electrochemical impedance spectroscopy measurements were performed to capture the physically meaningful parameters of the commercially available 18650 cylindrical and 2032 coin cells by using the equivalent circuit model. The impedance response of the batteries was systematically investigated and discussed. A detailed analysis was achieved providin...

Purpose: The objective of this work is to analyze and model impedance of widely used rechargeable batteries which are 18650 cylindrical lithium-ion battery and 6HR61 nickel-metal hydride battery pack. Theory and Methods: The rechargeable batteries were charged or discharged by using a potentiostat connected to a desktop computer. The impedance anal...

Bu çalışmada ikincil piller arasında yaygın olarak kullanılan ticari 18650 lityum-iyon ve 6HR61 nikel-metal hidrit pillerinin aynı hücre potansiyeli, sabit sıcaklık ve frekans aralığındaki elektrokimyasal empedans analizi gerçekleştirilmiştir. Bu iki tekrar şarj edilebilir pilin empedans cevapları ve geliştirilen eşdeğer devre modeli ile pillerin ö...

Recently, electrochemical methods are of growing interest. Electrochemical methods used in the development of sensors have many advantages such as high sensitivity, short response time, and low cost. Screen-printed electrodes (SPEs) are one of the electrochemical devices utilized as sensors that are used in a wide range of applications from health...

In this study, impedance responses of a lithium-ion battery and a nickel metal-hydride battery were analyzed as a function of different state of charge conditions. The physical parameters of these widely used rechargeable batteries have been extracted through an equivalent circuit model by fitting impedance data. The fit was excellent. The regresse...

Toxin substances are among the biohazard elements that threaten the safety of food and can cause death of living organisms. Apart from the traditional methods, biosensors for analysis food toxins have found wide usage area in recent years. These sensors have been named by the addition of biological materials such as enzymes, cells, tissues, antibod...

In this study, electrochemical impedance analysis at the same cell potential, constant temperature, and frequency range was performed for commercial 18650 lithium-ion and 6HR61 nickel-metal hydride batteries which are commonly used among secondary batteries. The significant physical parameters for batteries were determined by the impedance response...

Developing batteries with high energy density, safe operation, low cost, and long life is vital for successful implementation of Li-ion batteries in automotive industry. All-solid-state Li-ion batteries have been shown to significantly improve volumetric energy density, safety, and cycle life; however, their real-world applications are hindered by...

The new methodology proposed in this work uses oxide filaments/fibers instead of a dense thin film electrolyte, allowing: (i) straightforward fabrication without the use of costly thin film production techniques, (ii) minor changes in the existing Li- ion battery production lines, and (iii) better mechanical stability and electrochemical performanc...

The significant development in the construction of microscale cell culture platforms and interest in bioanalytical analysis have been made recently to result emerging a new concept of ‘organ-on-a-chip’ system. Organ-on-a-chip is a new three-dimensional (3D) in vitro microfabricated unit that contains a multichannel microfluidic cell culture. Even i...

Impedance Analysis and Modeling of Lithium-ion Batteries is a research book regarding electrochemical impedance spectroscopy analysis and its mathematical modelling of Lithium-ion batteries, which is and will be widely used rechargeable batteries in portable electronics and electric vehicles. Electrochemical impedance spectroscopy is broadly used a...

Impedance Analysis and Modeling of Lithium-ion Batteries is a research book regarding electrochemical impedance spectroscopy analysis and its mathematical modelling of Lithium-ion batteries, which is and will be widely used rechargeable baterries in portable electronics and electric vehicles. Electrochemical impedance spectroscopy is broadly used a...

Yüksek enerji yoğunluklarından dolayı, Lityum iyon pilleri hem elektronik cihazlarda hem de özellikle otomobillerde geniş ölçekli enerji depolama için tercih edilen sistemlerdir. Bu pillerin performansını değerlendirmek veya arızalarını tespit etmek çok önemlidir. Empedans spektroskopisi özellikle Li-iyon pillerinin elektrokimyasal performansı için...

This work provides the results of impedance measurements on commercially available LiCoO2|C coin-type battery cells and a process model development with respect to these data. The impedance response was shown to be extremely sensitive to state-of-charge, overcharge, over-discharge, and surrounding temperature. The impedance showed a persistent chan...

This paper provides the results of preliminary impedance measurements on commercial LiCoO2 coin cells. The impedance response was shown to be very sensitive to state-of-charge (SOC), temperature, and abuse such as overcharging and over-discharging. A process model was developed to reveal the influence of these conditions on electrochemical paramete...

It is recognized that the cycle life and capacity of a Li-ion battery is reduced if it is overcharged or in some cases overdischarged. The object of the present work was to explore the influence of overcharge and overdischarge on the impedance response of a Li-ion battery.

This paper provides the results of preliminary impedance measurements on commercial LiCoO2 coin cells. The impedance response was shown to be extremely sensitive to state-of-charge, overcharge, over-discharge, and elapsed time. Interestingly, the impedance showed a persistent change to the electrochemical characteristics of a coin cell subjected to...

Impedance measurements on commercial LiCoO2 secondary 2032 button cells are shown to be extremely sensitive to state-of-charge, overcharge, over-discharge, and elapsed time. The LiCoO2 cells were initially charged under galvanostatic control to 3.80 V. Each cell was potentiostatically held at constant cell potential. After the constant-potential re...

Impedance measurements on commercial LiCoO2 secondary 2032 button cells are shown to be extremely sensitive to state-of-charge, overcharge, overdischarge, and elapsed time. The LiCoO2 cells were initially charged under galvanostatic control to 3.80 V. Each cell was potentiostatically held at constant cell potential. After the constant- potential re...