Browsing by Author "Ülgüt, Burak"
Now showing items 1-20 of 21
-
AC electrowetting modulation of low-volatile liquids probed by XPS: dipolar vs ionic screening
(American Chemical Society, 2019)X-ray photoelectron spectroscopic (XPS) data have been recorded for a low-molecular-weight poly(ethylene glycol) microliter-sized sessile liquid drops sitting on a dielectric covered planar electrode while imposing a ±6 V ... -
Analysis of electrochemical noise in NiCd batteries throughout their lifetime
(TUBITAK, 2018)Electrochemical noise measurements have been applied to electrochemical systems that show stochastic behavior. The standard area of study that benefits from this stochastic analysis is localized corrosion modes like pitting ... -
Characterization of different electrolyte composition Lithium Thionyl Chloride reserve battery by Electrochemical Impedance Spectroscopy
(Electrochemical Society, Inc., 2021-05-19)Electrochemical Impedance Spectroscopy (EIS) characterization for electrochemical processes in Lithium Thionyl Chloride reserve primary battery is shown. Two different electrolyte compositions are used to distinguish the ... -
Coarse-grained electrostatic model including ion-pairing equilibrium that explains DC and AC X-ray photoelectron spectroscopy measurements on ionic liquids
(American Chemical Society, 2019)The dynamics of the electrochemical double layer in ionic liquids can be experimentally probed by a number of experimental techniques. Earlier, we reported on the results of an X-ray photoelectron spectroscopic investigation ... -
Guided lithium nucleation and growth on lithiophilic tin-decorated copper substrate
(Elsevier Inc., 2022-08-04)Lithium metal is the ultimate anode choice for high energy rechargeable lithium batteries owing to its ultra-high theoretical capacity, however, Li dendrites and low Coulombic efficiency (CE) caused by disordered Li plating ... -
Linear and nonlinear electrochemical impedance spectroscopy studies of Li/SOCl2 batteries
(Electrochemical Society Inc., 2019)Performing accurate, linear and stable Electrochemical Impedance Spectroscopy of Li/SOCl2 based batteries (and more generally, all primary batteries) is challenging due to the lack of a (well-defined) charging reaction. ... -
A method for voltage noise measurement and ıts application to primary batteries
(ECS, 2018)Though proven effective in localized corrosion studies, electrochemical noise measurements in batteries with Lithium based chemistries suffer from lack of well–defined measurement and analysis methods. The high capacitance ... -
Methods-employing multisine electrochemical impedance spectroscopy for batteries ın galvanostatic mode
(Electrochemical Society, Inc., 2022-11-07)Electrochemical Impedance Spectroscopy(EIS) is a standard technique for analyzing batteries in detail. It is immensely powerful as it can yield separate information about various components and interfaces inside while the ... -
Methods—unexpected effects in galvanostatic EIS of randles' cells: Initial transients and harmonics generated
(Electrochemical Society, Inc., 2022-03-17)Non-linear EIS analysis is gaining wider attention and interest due to the deeper understanding that is provided especially when combined with linear EIS. The nonlinear part of the data can get corrupted due to a number ... -
Non-linear harmonics in EIS of batteries with lithium anodes: Proper controls and analysis
(Elsevier, 2022-10-10)Non-linear Harmonic Analysis is used to investigate the distortions accompanying the Electrochemical Impedance Spectroscopy (EIS) measurements. The distortions emerge from non-linearity and non-stationarity due to the ... -
Operando investigations of the interfacial electrochemical kinetics of metallic lithium anodes via temperature-dependent electrochemical impedance spectroscopy
(American Chemical Society, 2022-06-28)One of the major hurdles in the utilization of metallic lithium anodes is understanding the Li+transfer kinetics through the solid electrolyte interface (SEI) in addition to Li oxidation. Electrochemical impedance spectroscopy ... -
Performance modeling of unmanaged hybrid battery/supercapacitor energy storage systems
(Elsevier, 2021-09-13)Unmanaged hybrid battery/supercapacitor energy storage systems possess higher performance with lower cost and complexity compared to not only individual cells, but also electronically managed hybrid systems. Achieving full ... -
Phenothiazine-based polymer cathode materials with ultrahigh power densities for lithium ion batteries
(American Chemical Society, 2018)Lithium ion batteries (LIBs) currently deliver the highest energy density of any known secondary electrochemical energy storage system. However, new cathode materials, which can deliver both high energy and power densities, ... -
Plasmon-coupled photocapacitor neuromodulators
(American Chemical Society, 2020)Efficient transduction of optical energy to bioelectrical stimuli is an important goal for effective communication with biological systems. For that, plasmonics has a significant potential via boosting the light−matter ... -
Regulating the solvation structure of potassium Ions using a multidentate ether in potassium metal batteries
(American Chemical Society, 2022-09-26)Potassium (K) is regarded as an alternative to lithium (Li) for use in contemporary energy storage devices owing to its high abundance and low electrochemical potential. However, because K ions are larger than Li ions, ... -
Role of water in the lyotropic liquid crystalline lithium Iodide–Iodine–water–C12E10 mesophase as a gel electrolyte in a dye-sensitized solar cell
(American Chemical Society, 2021-07-13)By replacing volatile and flammable organic-based electrolytes with gel electrolytes, dye-sensitized solar cells (DSSCs) may be a viable and more practical alternative to other clean energy sources. Although they present ... -
Role of water in the lyotropic liquid crystalline mesophase of lithium salts and non-ionic surfactants
(American Chemical Society, 2021-12-03)The lyotropic liquid crystalline (LLC) mesophase forms upon evaporation of water from aqueous solutions of LiX salts (X is Cl-, Br-, NO3-, or SCN-) and a surfactant [C12H25(OCH2CH2)10OH, abbreviated as C12E10]. The ... -
Synthesis and water oxidation electrocatalytic and electrochromic behaviours of mesoporous nickel oxide thin film electrodes
(Royal Society of Chemistry, 2019)Nickel oxide (NiO) thin film with a high surface area is an important material in electrochemical applications. Spin coating of a preformed clear solution of ethanol, nickel nitrate, and surfactants (C12H25(OCH2CH2)10OH, ... -
Synthesis of mesoporous LiMn2O4 and LiMn2−xCoxO4 thin films using the MASA approach as efficient water oxidation electrocatalysts
(Royal Society of Chemistry, 2018)Mesoporous, highly active, robust, and cost-effective thin films are in big demand for water splitting by electrocatalysis. Molten-salt assisted self-assembly (MASA) is an effective method to synthesize mesoporous thin ... -
X-ray photoelectron spectroscopy with electrical modulation can be used to probe electrical properties of liquids and their interfaces at different stages
(American Chemical Society, 2019)Operando X-ray photoelectron spectroscopy (o-XPS) has been used to record the binding energy shifts in the C 1s peak of a pristine poly(ethylene glycol) (PEG) liquid drop in an electrowetting on dielectric (EWOD) geometry ...
