A5059259447- Electrochemical Analysis and Applications
- Electrocatalysts for Energy Conversion
- Advanced battery technologies research
- Conducting polymers and applications
- Electrochemical sensors and biosensors
- Fuel Cells and Related Materials
- Analytical Chemistry and Sensors
- CO2 Reduction Techniques and Catalysts
- Advancements in Battery Materials
- Media, Religion, Digital Communication
- Concrete Corrosion and Durability
- Anodic Oxide Films and Nanostructures
- Impact of Technology on Adolescents
- Gas Sensing Nanomaterials and Sensors
- Electric and Hybrid Vehicle Technologies
- Ammonia Synthesis and Nitrogen Reduction
- Molecular Junctions and Nanostructures
- TiO2 Photocatalysis and Solar Cells
- Concrete and Cement Materials Research
- Advanced Photocatalysis Techniques
- Education, Sociology, Communication Studies
- Force Microscopy Techniques and Applications
University of Illinois Urbana-Champaign
2021-2024
Argonne National Laboratory
2022-2023
Tecnológico de Monterrey
2016-2022
University of Southampton
2017-2021
Currently, hydrogen production is based on the reforming process, leading to emission of pollutants; therefore, a substitute method imminently required. Water electrolysis an ideal alternative for large-scale production, as it does not produce any carbon-based pollutant byproducts. The green from water using intermittent sources (e.g., solar and eolic sources) would facilitate clean energy storage. However, electrocatalysts currently required are noble metals, making this potential option...
Electrochemical characterization of redox-active molecules in solution requires exploration manifold conditions (e.g., concentration, electrolyte type, pH, ionic strength), leading to tedious and time-consuming experiments that are prone user error. Here, we introduce the Electrolab, a modular, automated electrochemical platform seamlessly interfaces with common laboratory instrumentation low-cost electromechanical components. We integrated gantry-type robot carrying multipurpose nozzle...
Abstract Electrochemical research often requires stringent combinations of experimental parameters that are demanding to manually locate. Recent advances in automated instrumentation and machine-learning algorithms unlock the possibility for accelerated studies electrochemical fundamentals via high-throughput, online decision-making. Here we report an autonomous platform implements adaptive, closed-loop workflow mechanistic investigation molecular electrochemistry. As a proof-of-concept,...
Here, we develop and show the use of an open-source Python library to control commercial potentiostats. It standardizes commands for different potentiostat models, opening possibility perform automated experiments independently instrument used. At time this writing, have included potentiostats from CH Instruments (models 1205B, 1242B, 601E, 760E) PalmSens (model Emstat Pico), although nature allows more be in future. To showcase general workflow implementation a real experiment,...
Characterizing the decomposition of electrogenerated species in solution is essential for applications involving electrosynthesis, homogeneous electrocatalysis, and energy storage with redox flow batteries. In this work, we present an automated, multiplexed, highly robust platform determining rate constant chemical reaction steps following electron transfer, known as EC mechanism. We developed a generation-collection methodology based on microfabricated interdigitated electrode arrays (IDAs)...
Electrochemical research often requires stringent combinations of experimental parameters that are demanding to manually locate. Recent advances in automated instrumentation and machine-learning algorithms unlock the possibility for accelerated studies electrochemical fundamentals via high-throughput, online decision-making. Here we report an autonomous platform implements adaptive, closed-loop workflow mechanistic investigation molecular electrochemistry. As a proof-of-concept, this...
ADVERTISEMENT RETURN TO ISSUEPREVEnergy FocusNEXTNGenE 2022: Electrochemistry for DecarbonizationJordi Cabana*Jordi CabanaDepartment of Chemistry, University Illinois at Chicago, 60607, United States*[email protected]More by Jordi Cabanahttps://orcid.org/0000-0002-2353-5986, Thomas AlaanThomas AlaanDepartment Physics, StatesMore Alaan, George W. CrabtreeGeorge CrabtreeDepartment StatesJoint Center Energy Storage Research, Argonne National Laboratory, Lemont, 60439, Crabtree, Po-Wei...
Current hydrogen production is based on the reforming process leading to emission of pollutants; therefore, a substitute method imminently required. Water electrolysis an ideal alternative for large-scale production, as it does not produce any carbon-based pollutant byproducts. Production green from water using intermittent sources (e.g., solar, eolic) would facilitate clean energy storage. However, electrocatalysts currently required are noble metals, making this potential option expensive...
The presence of sulfates potentialize damage on cement-based materials, leading to structural failures. Therefore, structures must be designed compensate for this effect. mechanical properties cement–chitin mixtures are investigated with different percentages chitin (0.5, 1.3, and 2.1 wt.%) aging composite in a joint nanoscopic- macroscopic-scale by experimental study. objective is increase the durability concrete elements at coastal aquifers where constant exposure sulfate ions, chloride...
Abstract In this study, we employed microelectrodes and scanning electrochemical microscopy (SECM) to investigate the role of molecular oxygen local pH changes on electrochemistry Pt oxide. We show that in acidic media alkaline conditions, impact O 2 is negligible, while unbuffered neutral media, strongly affects formation oxides. Experiments carried under hindered diffusion reveal due a high arising from reduction reaction. This evidenced by appearance, at very positive potentials,...
Theoretical models used to describe the catalyst layers (CLs) in polymer electrolyte membrane fuel cells (PEMFCs) are reviewed, with a focus on continuum treatments as incorporated device-scale predict and optimise PEMFC operating performance. Consideration is given mathematical relationships between CL design properties (Pt/C mass ratio, loading, ionomer loading), physical properties. Relevant summarised, considering couplings phenomena of charge transfer, reactant hydrogen oxidation,...
Here, I introduce Soft Potato, an open source electrochemical simulator and toolkit that contains typical equations simulations to aid researchers streamline their data analysis when dealing with large datasets. As examples, show here how use it calculate steady state voltammograms from ultramicrodisc electrodes obtain a calibration curve the limiting current as function of redox species concentration. This example, showcases library, well flexibility given by interfacing third-party...
Current hydrogen production is based on the reforming process leading to emission of pollutants; therefore, a substitute method imminently required. Water electrolysis an ideal alternative for large-scale production, as it does not produce any carbon-based pollutant byproducts. Production green from water using intermittent sources (e.g., solar, eolic) would facilitate clean energy storage. However, electrocatalysts currently required are noble metals, making this potential option expensive...
This poster will present recent results obtained for the reduction of dioxygen on perovskite microelectrodes. Briefly, a powder (La 0.58 Ag 0.4 Ni 0.6 Cu O 3 ) was synthesised using Pechini method 1 and suspended in solution consisting conductive carbon, Nafion, water ethanol. A 50 μm Ø gold disc electrode recessed by potentiostatic cycling KCl Ru(NH 6 Cl , latter being added to monitor recess depth real time. Following Bartlett et al. 2 cavity estimated be 8.1 from limiting current 3+ . The...
The oxygen reduction reaction (ORR) was studied using Pt based microelectrodes under different mass transfer regimes. Current transients at potentials were recorded by first applying a cleaning waveform and rest potential 1–3 transformed to sampled current voltammograms finally normalised the equation proposed Mahon Oldham 4 . In steady state, is akin an apparent number of electrons n app , while for shorter times, presence extra that attributed adsorbed species (adspecies) can be seen 2,3...
Recently, adsorbed oxygen species (adspecies) have been detected at the millisecond scale on different metallic microelectrodes after being exposed to dissolved 1,2 . Comparing experimental current of reduction reaction (ORR) with a theoretical diffusion controlled current, it was revealed that both, and species, were reduced same time. To study adspecies independently, is necessary decouple contribution each process. Here, we show this can be done by controlling availability gas present in...