Výsledky vyhledávání - "Kaustubh Khedekar"

Effect of Commercial Gas Diffusion Layers on Catalyst Durability of Polymer Electrolyte Fuel Cells in Varied Cathode Gas Environment

Autor: Kaustubh Khedekar, Pongsarun Satjaritanun, Sarah Stewart, Jonathan Braaten, Plamen Atanassov, Nobumichi Tamura, Lei Cheng, Christina M. Johnston, Iryna V. Zenyuk

Publikováno v: Small (Weinheim an der Bergstrasse, Germany), vol 18, iss 33

Gas diffusion layers (GDLs) play a crucial role in heat transfer and water management of cathode catalyst layers in polymer electrolyte fuel cells (PEFCs). Thermal and water gradients can accelerate electrocatalyst degradation and therefore the selec

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::931cda338a0fddd80fb294f9d8e20b1c
https://pubmed.ncbi.nlm.nih.gov/35871500

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Understanding the Impact of Microporous Layer Cracks on Pt Catalyst Degradation

Autor: Celine H. Chen, Andrea Zaffora, Kaustubh Khedekar, Yu Morimoto, Plamen Atanassov, Sarah Stewart, Lei Cheng, Christina Johnston, Iryna V. Zenyuk

Publikováno v: ECS Meeting Abstracts. :1377-1377

As the need for more flexible utilization of renewable energy sources increases, the uses of clean hydrogen and fuel cells are pursued by governments worldwide due to high gravimetric energy density of hydrogen. Polymer electrolyte fuel cells (PEFCs)

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::7286aecfcfbc13a32ce9fe03dac22015
https://doi.org/10.1149/ma2022-02391377mtgabs

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Understanding Gas Permeation during High Pressure Operation of PEM Water Electrolyzers

Autor: Kaustubh Khedekar, Christopher Evan Van Pelt, Ryan Gebhardt, Iryna V. Zenyuk, Guido Bender, Rangachary Mukundan, Andrew M Park, Rod L. Borup, Siddharth Komini Babu

Publikováno v: ECS Meeting Abstracts. :1662-1662

Governments and industries across the world have initiated implementation of clean hydrogen (H2) to achieve zero emissions, yet significant challenges remain for large scale adoption. With the decreasing renewable electricity cost PEM water electroly

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::08eb913df4cbd07e4632fe08cf651184
https://doi.org/10.1149/ma2022-02441662mtgabs

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Identical Location Mapping of Pt in Polymer Electrolyte Fuel Cells before and after Heavy-Duty Accelerated Stress Test

Autor: Kaustubh Khedekar, Andrea Zaffora, Plamen Atanassov, Lei Cheng, Christina Johnston, Iryna V. Zenyuk

Publikováno v: ECS Meeting Abstracts. :1567-1567

Worldwide, governments and industries are pursuing the use of clean hydrogen to achieve zero emissions, especially for difficult to decarbonize sectors such as heavy-duty transportation, aviation, shipping and chemical manufacturing. Polymer electrol

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::f52a5ddd8a52c2b89cc1ed7e78aea0d8
https://doi.org/10.1149/ma2022-02421567mtgabs

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Local Hydrophobicity of Atomically Dispersed Fe-N-C Catalysts and Its Impact on the Oxygen Reduction Reaction in Membrane Electrode Assembly

Autor: Plamen Atanassov, Yuanchao Liu, Eamonn Murphy, Divija Nitin Mamania, Kaustubh Khedekar, Iryna V. Zenyuk

Publikováno v: ECS Meeting Abstracts. :1601-1601

Non-precious metal electrocatalysts with atomically dispersed transition metal sites have shown promising performance for the oxygen reduction reaction (ORR) in proton exchange membrane fuel cells. The Fe-N-C catalysts, with single iron atom coordina

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::ae0619ac5b8cc7638f5ac2e1c2be016d
https://doi.org/10.1149/ma2022-02421601mtgabs

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(Invited) Impact of Pore Morphology and Surface Hydrophobicity of the Carbon Matrix on the Macrokinetics of the Oxygen Reduction Reaction Performance for Atomically Dispersed Fe-N-C Catalysts

Autor: Yuanchao Liu, Eamonn Murphy, Divija Nitin Mamania, Kaustubh Khedekar, Tristan Asset, Frederic Jaouen, Iryna V. Zenyuk, Plamen Atanassov

Publikováno v: ECS Meeting Abstracts. :633-633

Atomically dispersed transition metal catalysts are an important family of non-precious metal electrocatalysts for the oxygen reduction reaction (ORR) in proton exchange membrane fuel cells. The iron-nitrogen-carbon (Fe-N-C) catalyst, wherein the iro

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d0caa7d93fbe12502862457957202661
https://doi.org/10.1149/ma2022-017633mtgabs

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Mapping of Heterogeneous Catalyst Degradation in Polymer Electrolyte Fuel Cells

Autor: Nobumichi Tamura, Saravanan Kuppan, Christina Johnston, Kaustubh Khedekar, Iryna V. Zenyuk, Metzger Michael, Andrea Perego, Craig Nathan P, Sarah Stewart, Plamen Atanassov, Morteza Rezaei Talarposhti, Lei Cheng

Publikováno v: Advanced Energy Materials, vol 10, iss 28

Durability of cathode catalyst in polymer electrolyte fuel cells (PEFCs) is a key factor, limiting large-scale commercialization of PEFC for transportation applications. The catalyst degradation occurs during operational load profiles switches from i

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8005cd52363f839ad8a8f9393bf0611b
https://escholarship.org/uc/item/5k76v320

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Probing Heterogeneous Degradation of Catalyst in PEM Fuel Cells under Realistic Automotive Conditions with Multi‐Modal Techniques

Autor: Sarah Stewart, Morteza Rezaei Talarposhti, Christina Johnston, Kaustubh Khedekar, Craig Nathan P, Yechuan Chen, Saravanan Kuppan, Nobumichi Tamura, Iryna V. Zenyuk, Lei Cheng, Münir M. Besli, Plamen Atanassov, Michael Metzger, Andrea Perego

Publikováno v: Advanced Energy Materials, vol 11, iss 35

Author(s): Khedekar, K; Rezaei Talarposhti, M; Besli, MM; Kuppan, S; Perego, A; Chen, Y; Metzger, M; Stewart, S; Atanassov, P; Tamura, N; Craig, N; Cheng, L; Johnston, CM; Zenyuk, IV | Abstract: The heterogeneity of polymer electrolyte fuel cell cata

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::af8918b2730bb30e5c69b5163df9ca82
https://doi.org/10.1002/aenm.202101794

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