Zobrazeno 1 - 10 of 54 pro vyhledávání: '"Barr Halevi"'
2
Oxygen Binding to Active Sites of Fe–N–C ORR Electrocatalysts Observed by Ambient-Pressure XPS
Autor: Ivana Matanovic, Kateryna Artyushkova, Plamen Atanassov, Barr Halevi
Publikováno v: The Journal of Physical Chemistry C. 121:2836-2843
We report the first in situ ambient pressure X-ray photoelectron spectroscopy (APXPS) study of the binding of oxygenated species to the active sites of iron–nitrogen–carbon oxygen reduction reaction (ORR) electrocatalysts. To better interpret the
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::97d3e3ce0397a0cd380163f7215ab671
https://doi.org/10.1021/acs.jpcc.6b11721
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3
Effect of silica morphology on the structure of hard-templated, non-precious metal catalysts for oxygen reduction
Autor: Jacob Anibal, Nathaniel Leonard, Henry Romero, Barr Halevi, Scott Calabrese Barton, Cenk Gumeci
Publikováno v: Applied Catalysis B: Environmental. 198:32-37
With extensive development over the past ten years, non-precious metal (NPM) catalysts have become promising alternatives to platinum catalysts in fuel cell cathodes, but have been challenged by severe transport limitations. Hard template synthesis,
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::a2b87ca4a049412461b068b534bf3451
https://doi.org/10.1016/j.apcatb.2016.05.038
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4
Highly stable precious metal-free cathode catalyst for fuel cell application
Autor: Geoffrey McCool, Sam McKinney, Michael J. Workman, Kateryna Artyushkova, Alexey Serov, Barr Halevi, Thomas Stephenson, Henry Romero, Plamen Atanassov
Publikováno v: Journal of Power Sources. 327:557-564
A platinum group metal-free (PGM-free) oxygen reduction reaction (ORR) catalyst engineered for stability has been synthesized using the sacrificial support method (SSM). This catalyst was comprehensively characterized by physiochemical analyses and t
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::5279cef15dd6088bdd80dced859b6900
https://doi.org/10.1016/j.jpowsour.2016.07.087
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5
PGM-free Fe-N-C catalysts for oxygen reduction reaction: Catalyst layer design
Autor: Plamen Atanassov, Sam McKinney, Kateryna Artyushkova, Barr Halevi, Michael J. Workman, Alexey Serov, Sarah Stariha
Publikováno v: Journal of Power Sources. 326:43-49
This work studies the morphology of platinum group metal-free (PGM-free) iron-nitrogen-carbon (Fe-N-C) catalyst layers for the oxygen reduction reaction (ORR) and compares catalytic performance via polarization curves. Three different nitrogen-rich o
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::72aafa66c0a3913c61e34516feb77af5
https://doi.org/10.1016/j.jpowsour.2016.06.098
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6
Application of the Discrete Wavelet Transform to SEM and AFM Micrographs for Quantitative Analysis of Complex Surfaces
Autor: Alexey Serov, Plamen Atanassov, Barr Halevi, Michael J. Workman, Kateryna Artyushkova
Publikováno v: Langmuir. 31:4924-4933
The discrete wavelet transform (DWT) has found significant utility in process monitoring, filtering, and feature isolation of SEM, AFM, and optical images. Current use of the DWT for surface analysis assumes initial knowledge of the sizes of the feat
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5609d2424537066298b35facf711315a
https://doi.org/10.1021/acs.langmuir.5b00292
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7
Effect of pyrolysis pressure on activity of Fe–N–C catalysts for oxygen reduction
Autor: Yuanchao Liu, Nathaniel Leonard, Barr Halevi, Cenk Gumeci, Samuel McKinney, Scott Calabrese Barton
Publikováno v: Journal of Materials Chemistry A. 3:21494-21500
Iron and nitrogen doped carbon, Fe–N–C, catalysts are synthesized by high pressure pyrolysis of Ketjenblack carbon, melamine and iron acetate precursor mixture in a closed, reusable scale-up stainless steel reactor. The effects of precursor loadi
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::996882ee2f3b0ae1abfb3fbb6860b711
https://doi.org/10.1039/c5ta05995j
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8
Mechanistic Study of Electrooxidation of Ethanol on PtSn Nanoparticles in Alkaline and Acid Media
Autor: Barr Halevi, Elena A. Baranova, Monica Padilla, Plamen Atanassov, Kateryna Artyushkova
Publikováno v: Journal of The Electrochemical Society. 162:H345-H351
In this study, we report on the structure-to-property relationship for PtSn ethanol electrooxidation catalysts in alkaline and acidenvironment. Relationship between surface chemistry, as determined by XPS and electrochemical performance in both acid
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::e76a5aafac6ad4f182f96d2cb2ec6899
https://doi.org/10.1149/2.0401506jes
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10
Influence of ZnO Facets on Pd/ZnO Catalysts for Methanol Steam Reforming
Autor: Abhaya K. Datye, Junming Sun, Barr Halevi, Yong Wang, He Zhang, Vanessa Lebarbier Dagle
Publikováno v: ACS Catalysis. 4:2379-2386
A series of Pd/ZnO catalysts with different Pd loadings were prepared using needlelike ZnO crystallites (ZnO-N) with predominant (10–10) nonpolar facets exposed and commercial ZnO (ZnO-P) without any dominant facets. The Pd/ZnO catalysts were chara
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::ccc34d0930700d411055d75502a27875
https://doi.org/10.1021/cs500590t
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