A5034456929- Electrocatalysts for Energy Conversion
- Fuel Cells and Related Materials
- Advanced battery technologies research
- Catalytic Processes in Materials Science
- Electrochemical Analysis and Applications
- Hybrid Renewable Energy Systems
- Supercapacitor Materials and Fabrication
- Conducting polymers and applications
- Electrospun Nanofibers in Biomedical Applications
- Advanced Memory and Neural Computing
- Advanced Battery Technologies Research
- Catalysis and Hydrodesulfurization Studies
- Advancements in Solid Oxide Fuel Cells
- Educational Methods and Teacher Development
- Porphyrin and Phthalocyanine Chemistry
- Advanced Photocatalysis Techniques
- Mine drainage and remediation techniques
- Advanced Battery Materials and Technologies
- Iron oxide chemistry and applications
- Nanomaterials for catalytic reactions
- Analytical Chemistry and Sensors
- Psychology of Development and Education
- Gas Sensing Nanomaterials and Sensors
- Educational Innovations and Challenges
- Ammonia Synthesis and Nitrogen Reduction
Technion – Israel Institute of Technology
2017-2024
Wilson Wolf Manufacturing (United States)
2019
Frumkin Institute of Physical Chemistry and Electrochemistry
2010-2016
Russian Academy of Sciences
2012-2015
Joint Institute for High Temperatures
2015
In the past 5 years, advances in anion-conductive membranes have opened door for development of advanced anion-exchange membrane fuel cells (AEMFCs) as next generation affordable cells. Several recent works shown that AEMFCs currently achieve nearly identical beginning-of-life performance state-of-the-art proton exchange However, until now, these high AEMFC performances been reached with platinum-group metal (PGM)-based anode and cathode catalysts. order to fulfill potential AEMFCs, such...
Abstract Green hydrogen produced by water splitting using renewable electricity is essential to achieve net-zero carbon emissions. Present electrolysis technologies are uncompetitive with low-cost grey from fossil fuels, limiting their scale-up potential. Disruptive processes that decouple the and oxygen evolution reactions produce them in separate cells or different stages emerge as a prospective route reduce system cost enabling operation without expensive membranes sealing components....
Among the non-noble-metal electrocatalysts for hydrogen oxidation reaction (HOR) in anion exchange membrane fuel cells (AEMFCs), Ni-based nanoparticles have shown highest reported activities. In this work, we investigated chemical and electrochemical stability of representative electrocatalysts. For this, carbon-supported monometallic Ni bimetallic Ni3M (M = Co, Fe, Cu, Mo) were synthesized tested using a set complementary techniques. It was found that Mo suffers from intense dissolution due...
Carbon supported nanoparticles of monometallic Ni catalyst and binary Ni-Transition Metal (Ni-TM/C) electrocatalytic composites were synthesized via the chemical reduction method, where TM stands for doping elements Fe, Co, Cu. The composition, structure morphology Ni-TM/C materials characterized by X-ray photoelectron spectroscopy (XPS), diffraction (XRD), transmission electron microscopy (TEM), scanning (STEM) energy-dispersive (EDS). electrochemical properties towards hydrogen oxidation...
Abstract Due to the sluggish kinetics of hydrogen oxidation reaction (HOR) in alkaline electrolytes, development more efficient HOR catalysts is essential for next generation anion‐exchange membrane fuel cells (AEMFCs). In this work, CeO x selectively deposited onto carbon‐supported Pd nanoparticles by controlled surface reactions, aiming enhance homogenous distribution and its preferential attachment nanoparticles, achieve highly active ‐Pd/C catalysts. The are characterized inductively...
Anion exchange membrane fuel cells (AEMFCs) offer several important advantages with respect to proton cells, including the possibility of avoiding use platinum catalysts help overcome high cost cell systems. Despite such potential benefits, slow kinetics hydrogen oxidation reaction (HOR) in alkaline media and limitations performance stability (because degradation anion conducting polymer electrolyte components) have generally impeded AEMFC development. Replacing Pt an active but more...
Herein, a unique anion‐exchange membrane fuel cell (AEMFC) containing only affordable and abundant materials is presented: NiFe hydrogen oxidation reaction (HOR) nitrogen‐doped carbon oxygen reduction (ORR) electrocatalysts. AEMFCs are an attractive alternative to proton‐exchange cells. They can run under alkaline conditions, allowing the use of platinum group metal (PGM)‐free Yet, same conditions incur overpotential loss in ORR also slow HOR. This be solved by using PGM electrodes, but then...
Hematite (α-Fe2O3) is one of the most studied photoanode materials due to its stability in alkaline electrolytes and visible light absorption. However, reported performance lags significantly behind theoretical limit. Toward determining routes for efficient photo-oxidation on hematite, we investigated role hole-trapping surface states as reaction intermediates using sacrificial reductant reagents hole scavengers, H2O2 FeCN. Photoelectrochemical characterization at low scavenger...
Carbon cloth substrates outperform their nickel foam counterparts for electrodeposited cobalt-doped hydroxide anodes ultrahigh efficiency decoupled water splitting in a membraneless electrochemical – thermally activated chemical process.
A new heterogeneous catalyst for hydrogen oxidation reaction (HOR), metallic palladium within which nanoparticles of ceria are entrapped, CeO 2 @Pd, is described. Its preparation based on a materials methodology molecular doping metals. The matrix, encages the nanoparticles, prepared in foam architecture, to ensure easy diffusion. Characterization structural properties @Pd composite using SEM, STEM, TEM, XRD, EXAFS and nitrogen adsorption reveals its morphological leads improved catalytic...
The latest progress in alkaline anion-exchange membranes has led to the expectation that less costly catalysts than those of platinum-group metals may be used membrane fuel cell devices. In this work, we compare structural properties and catalytic activity for hydrogen-oxidation reaction (HOR) carbon-supported nanoparticles Ni, Ni3Co, Ni3Cu, Ni3Fe, synthesized by chemical solvothermal reduction metal precursors. are well dispersed on carbon support, with particle diameter order 10 nm,...
Green hydrogen produced by water splitting using renewable electricity is essential to achieve net-zero carbon emissions. Present electrolysis technologies are uncompetitive with low-cost grey from fossil fuels, limiting their scale-up potential. Disruptive processes that decouple the and oxygen evolution reactions produce them in separate cells or different stages emerge as a prospective route reduce system cost enabling operation without expensive membranes sealing components. An elegant...
Green hydrogen produced by water splitting using renewable electricity is essential to achieve net-zero carbon emissions. Present electrolysis technologies are uncompetitive with low-cost grey from fossil fuels, limiting their scale-up potential. Disruptive processes that decouple the and oxygen evolution reactions produce them in separate cells or different stages emerge as a prospective route reduce system cost enabling operation without expensive membranes sealing components. Some of...
Carbon supported nanoparticles of monometallic Ni catalyst and binary Ni-Transition Metal (Ni-TM/C) electrocatalytic composites were synthesized via chemical reduction method, where TM stands for the doping elements Fe, Co, Cu. The composition, structure morphology Ni-TM/C materials characterized by X-ray photoelectron spectroscopy (XPS), diffractometry (XRD), transmission electron microscopy (TEM), scanning (STEM) energy-dispersive (EDS). electrochemical properties towards hydrogen...