A5091006730- Electrochemical Analysis and Applications
- Electrocatalysts for Energy Conversion
- Molecular Junctions and Nanostructures
- Advanced battery technologies research
- Advanced Battery Technologies Research
- Smart Materials for Construction
- Advanced Battery Materials and Technologies
- Analytical Chemistry and Sensors
- Conducting polymers and applications
- Nanopore and Nanochannel Transport Studies
- Electrodeposition and Electroless Coatings
- Spectroscopy and Quantum Chemical Studies
- Mechanical and Thermal Properties Analysis
- Non-Destructive Testing Techniques
- Fuel Cells and Related Materials
- Concrete Corrosion and Durability
- Advanced Chemical Sensor Technologies
- Quantum Dots Synthesis And Properties
- Corrosion Behavior and Inhibition
- Various Chemistry Research Topics
- Ferroelectric and Piezoelectric Materials
- Concrete and Cement Materials Research
- Advanced biosensing and bioanalysis techniques
- Hybrid Renewable Energy Systems
- Photoreceptor and optogenetics research
Universidade Federal de São Carlos
2015-2025
University of Bath
2023-2024
Universidade Estadual de Campinas (UNICAMP)
2020
Universidade Estadual do Centro-Oeste
2014-2015
This work investigates the possibility of interfacial pH changes during a hydrogen evolution reaction using finite elements simulation approach. is common side step observed in many electrochemical systems, such as electrodeposition or corrosion. To develop general approach, different mechanisms, i.e., Volmer/Tafel and Volmer/Heyrovský, were investigated. It that for V-H mechanism change increases 4.2 units those cases where bulk 5.0. Therefore, this case, instant at interface become...
Despite significant advancements in electrochemical techniques, kinetic measurements electrocatalysis still predominantly rely on voltammetric curves and Tafel plots, which can lead to data misinterpretation overestimation of catalytic efficiency due area effects. Addressing this gap, article introduces a staircase voltammetry-based method investigate the kinetics electrosorption. By leveraging pulsed nature voltammetry, approach enables determination rate constants independent real...
Abstract (Photo)electrochemical processes are involved in many fields of science and technology. The use spectroscopic techniques coupled to (photo)electrochemistry, mandatory get information about interfacial on scale ranges from millimeters the nanoscale. development spectroelectrochemical cells (SECs) contributes progress field (photo)electrochemistry their impact Therefore, this work, we describe detail a versatile SEC that can be used for conventional electrochemical experiments several...
Electrosynthesis traditionally requires dedicated reactor systems and an added electrolyte, although some paired electrosynthesis processes are possible at interdigitated microband electrodes simply immersed in solution without intentionally electrolyte. Here, 1,1′-ferrocenedimethanol oxidation activated olefin electro-hydrogenation reactions investigated as model a Pt–Pt array electrode with 5 μm width interelectrode gap. Voltammetric responses for discussed, product yields determined...
In this paper, we study theoretically and experimentally the effect of induced charging currents on fast-scan cyclic voltammetry. As explained in phenomenon originates from coupling between faradaic capacitive presence uncompensated resistance. Due to existence currents, contribution total current is different measured absence electroactive species. show that particularly important when ratio close unity, even for a relatively low cell time constant. Consequently, conventional background...
Ionic diode based devices or circuits can be applied, for example, in electroosmotic pumps desalination processes. Aquivion ionomer coated asymmetrically over a Teflon film (5 μm thickness) with laser-drilled microhole (approximately 10 diameter) gives cationic rectification ratio of typically 10–20 (measured 0.01 M NaCl ±0.3 V applied bias). Steady state voltammetry, chronoamperometry, and electrochemical impedance spectroscopy data are employed to characterize the ionic performance...
We studied the efficiency and accuracy of a general purpose finite element software in numerical solution electrochemical models. Typical complications like boundary singularities, stiffness multiscale problems were addressed. The convergence order was determined for various mesh refinement strategies. As rule, proved adequate to dealt, but default generated meshes adaptive adjustment do not work properly, if high levels are required. Therefore, manual control parameters is indispensable. A...
Abstract The deposition of a monolayer nanoarray on the surface micrometer‐thick substrate is demonstrated, producing rectification characteristics at nanoscale. experimental results show that heterogeneity structure and charge density are two key factors affecting rectification, which was confirmed with molecular dynamic (MD) finite element simulations. Moreover, by altering asymmetric electrolyte environment, fabricated heterogeneous membrane can be used in energy conversion. This study...
Energy storage systems play a major role in the energy transition. Among them, vanadium redox flow batteries are promising alternative to conventional batteries, which due their design can be scaled, and it is possible decouple power density. However, transport of electroactive species through membrane (cross-contamination) reduces capacity useful life these batteries. In this work, computational simulation was performed using finite element method coupled chemometric analysis develop...
Abstract Invited for this month's cover picture is Prof. Pablo S. Fernández from Campinas Electrochemistry Group (Brazil). The Front Cover shows an electrochemical submarine station, presenting overly complex and unknown problem at its core. To solve it, researchers have sent three “electroships” equipped with high‐power lasers that emit photons different energies, to attack the using as many weapons possible. Read full text of Article 10.1002/celc.202000910 .
Understanding the structure of electrical double layer (EDL) is great importance for many different technological and scientific applications, but some information not always accessible from experiments. In this sense, aim study was to implement a simple one-dimensional computational model EDL solve by finite element method. The details validation are presented frequency domain analysis performed in order obtain impedance information. From study, it possible total capacitance confirm its...