A5025636116- Fuel Cells and Related Materials
- Electrocatalysts for Energy Conversion
- Advanced battery technologies research
- Membrane-based Ion Separation Techniques
- Advancements in Solid Oxide Fuel Cells
- Hybrid Renewable Energy Systems
- Advanced Battery Materials and Technologies
- Hydrogen Storage and Materials
- Electrochemical Analysis and Applications
- Electrochemical sensors and biosensors
- Advancements in Battery Materials
- CO2 Reduction Techniques and Catalysts
- Molecular Junctions and Nanostructures
National Nuclear Energy Commission
2021-2024
Simon Fraser University
2023-2024
Instituto de Pesquisas Energéticas e Nucleares
2023
Universidade de São Paulo
2014-2020
Microelectronica (Romania)
2019
Instituto de Psicologia Comportamental de São Carlos
2018
University of Surrey
2018
Anion-exchange membrane water electrolysis (AEMWE) is a promising technology for low-cost, high-efficiency, green hydrogen production. The stability of the AEM critical issue but difficult to delineate in situ from degradation catalyst layer (CL). Moreover, porous transport (PTL) can contribute electrocatalytically. Herein, we demonstrate that stainless steel (SS) felt, absence an anode CL, highly active toward oxygen evolution reaction (OER) (1 A cm–2 at 1.74 Vcell) and serves as combined...
Radiation-grafted anion-exchange ionomer powders were tested in membrane fuel cells.
Ex-situ characterization of solid polymer electrolytes plays an important role in their development as materials for energy applications, with ionic conductivity being a crucial parameter to quantify. Conventional measurements often require the formation free-standing film which many instances is difficult fabricate, thus there may be need quantify powder form. In this work, we present practical and reproducible method measuring (SPEs) By using modified configuration through-plane cell,...
Abstract The existing gap in the ability to quantify impacts of resistive losses on performance anion‐exchange membrane fuel cells (AEMFCs) during lifetime their operation is a serious concern for technology. In this paper, we analyzed ohmic region an operating AEMFC fed with pure oxygen followed by CO 2 ‐free air at various currents, using combination electrochemical impedance spectroscopy (EIS) and novel technique called genetic programming (ISGP). Presented here first time work, isolated...
Progress in understanding crucial properties of radiation-induced grafted anion-exchange membranes (RIG-AEMs) to improve the performance and durability water electrolysis systems.
This study presents a systematic analysis of the influence irradiation conditions on physicochemical properties radiation-induced grafted anion-exchange membranes (AEMs) based low-density polyethylene (LDPE). Detailed characterization polymeric electrolytes shows striking effects AEM properties. By lowering sample temperature from room (RT) to ~ -10°C (LT) during in air it is possible obtain threefold increase degree grafting (DoG). The higher DoG reflects OH- conductivity (s) irradiated at...
Among the hydrogen fuelled systems, proton exchange membrane (PEM) and alkaline (AFC) fuel cells appear as most adequate candidates for applications in automotive, portable or stationary devices. However, significant efforts still have to be done regarding limitations introduced by slow oxygen reduction reaction (ORR) kinetics poisoning of anode CO other contaminants, particularly when is produced reforming dehydrogenation fuels. In this work, performance stability platinum-based catalysts...
The catalytic dehydrogenation of ethanol on a Cu / ZrO 2 catalyst at 250 ° C has been recently proposed as suitable approach for the production CO-free hydrogen[1]. In this way, hydrogen-rich gas stream generated in system had directed to anode PEM fuel cell, that presented 70% efficiency obtained when pure hydrogen was used. reason considerable loss performance not clear and is main motivation work. For investigation, we have used which contaminated with by-products reaction, were unreacted...
Among the hydrogen fuelled systems, proton exchange membrane (PEMFC) and alkaline (AFC) fuel cells appear as most adequate candidates for applications on automotive, portable or stationary devices. However, significant efforts still have to be done regarding limitations introduced by slow oxygen reduction reaction (ORR) kinetics poisoning of anode CO other contaminants, particularly when is produced reforming dehydrogenation fuels. In this work, evaluations performance stability...
Controlling the synthesis parameters during radiation-induced grafting (RIG) is a key feature to design anion-exchange membranes (AEMs) with enhanced properties that lead high performances and stability. The present study provides systematic investigation of effect RIG methods on physicochemical LDPE-based AEMs similar degree (DoG) ion exchange capacity (IEC). LDPE films were grafted 4-vinylbenzyl chloride using two methods: i) pre-irradiation (PIM), electron-beam (EB), ii) simultaneous...