Výsledky vyhledávání - "Sergio A. Paredes-Navia"

Conformal Electrocatalytic Surface Nanoionics for Accelerating High-Temperature Electrochemical Reactions in Solid Oxide Fuel Cells

Autor: Xueyan Song, Kirk Gerdes, Alec Hinerman, Liang Liang, Yun Chen, Sergio A Paredes Navia

Publikováno v: Nano Letters. 19:8767-8773

Additive implantation of electrocatalysts onto the internal surface of porous cathodes holds great promise to accelerate the electrochemical reactions within solid oxide fuel cells (SOFCs). Here we utilize atomic layer deposition (ALD) to apply dual

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b7fd847814e8afc9a528aa733eb4bfaf
https://doi.org/10.1021/acs.nanolett.9b03515

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Difference between transition metal cation substitution and Nonstoichiometric addition on nanostructure and thermoelectric performance of complex oxide ceramics

Autor: Yun Chen, Liang Liang, Cesar-Octavio Romo-De-La-Cruz, Bryan Jackson, Xueyan Song, Paulo Carvilo, Jacky C. Prucz, Sergio A. Paredes-Navia, Ellena Gemmen

Publikováno v: Journal of Solid State Chemistry. 277:427-433

This work presents the impact of different methodologies in introducing the transition metal dopants into the thermoelectric Ca3Co4O9 ceramics and their resultant nanostructure and electrical transport properties. The polycrystalline ceramics samples

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::7c087636428c2483e24261bf557d38e7
https://doi.org/10.1016/j.jssc.2019.06.042

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Synergetic Interaction of Additive Dual Nanocatalysts to Accelerate Oxygen Reduction Reaction in Fuel Cell Cathodes

Autor: Liang Liang, Yun Chen, Xueyan Song, Sergio A Paredes Navia, Alec Hinerman, Kirk Gerdes

Publikováno v: ACS Catalysis. 9:6664-6671

The sluggish oxygen reduction reaction (ORR) in the cathode is hindering the power density of solid oxide fuel cells (SOFCs). Infiltration of catalyst into the cathode of SOFCs is promising to acce...

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::1daeddda48b718e2e486f67e18587db1
https://doi.org/10.1021/acscatal.9b00811

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Conformal coating of cobalt oxide on solid oxide fuel cell cathode and resultant continuously increased oxygen reduction reaction kinetics upon operation

Autor: Jacky C. Prucz, Liang Liang, Sergio A Paredes Navia, Xueyan Song, Yun Chen, Kirk Gerdes, Alec Hinerman

Publikováno v: Journal of Power Sources. 405:45-50

To improve the sluggish oxygen reduction reaction from the cathode of solid oxide fuel cells (SOFCs), a conformal layer of catalytic CoOx grains was deposited onto the internal surface of LSM/YSZ composite cathode of commercial cells, through atomic

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::6ca6df372a110f41edfe42525fb6cc92
https://doi.org/10.1016/j.jpowsour.2018.10.022

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Grain Boundary Phase Segregation for Dramatic Improvement of the Thermoelectric Performance of Oxide Ceramics

Autor: Cesar-Octavio Romo-De-La-Cruz, Liang Liang, Yun Chen, Jacky C. Prucz, Alec Hinerman, Sergio A Paredes Navia, Cullen Boyle, Xueyan Song, Megan Wilt, Bryan Jackson

Publikováno v: ACS Applied Materials & Interfaces. 10:39018-39024

This work presents a novel approach of dramatically increasing the energy conversion efficiency of thermoelectric CaMnO3−δ ceramics through the combination of lattice dopants substitution and secon...

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9cb6d066cfaa809477662fbde2727fae
https://doi.org/10.1021/acsami.8b12710

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Electrocatalytic surface nanoionics with strained interfaced and colossal conductivity for enhancing durability and performance of solid oxide fuel cell

Autor: Xueyan Song, Liang Liang, Cesar O. Romo-De-La-Cruz, Alec Hinerman, Yun Chen, Jacky C. Prucz, Mark C. Williams, Sergio A. Paredes-Navia

Publikováno v: Journal of Power Sources. 517:230715

For an oxygen electrode in solid oxide fuel cells (SOFCs) consisting of mixed electrical and ionic conducting lanthanum strontium cobalt ferrite (LSCF), it degrades due to its low chemical stability and cation surface segregation. To mitigate such de

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::23eaa55cef24e7c062345bb30b8da963
https://doi.org/10.1016/j.jpowsour.2021.230715

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Coating internal surface of porous electrode for decreasing the ohmic resistance and shifting oxygen reduction reaction pathways in solid oxide fuel cells

Autor: Alec Hinerman, Sergio A. Paredes-Navia, Liang Liang, Yun Chen, Jacky C. Prucz, Cesar-Octavio Romo-De-La-Cruz, Mark C. Williams, Xueyan Song, Andre Fernandes

Publikováno v: Journal of Power Sources. 499:229854

For mixed conductor La0.6Sr0.4Co0.2Fe0.8O3-x (LSCF) in solid oxide fuel cells (SOFCs), cation surface segregation such as volatile Sr and consequently losing conductivity and active sites for the oxygen reduction reaction (ORR) are problematic. To mi

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::162d3f96fcec280cb2a75e84a90c8e60
https://doi.org/10.1016/j.jpowsour.2021.229854

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Electrical conductivity increase by order of magnitude through controlling sintering to tune hierarchical structure of oxide ceramics

Autor: Xueyan Song, Cesar-Octavio Romo-De-La-Cruz, Yun Chen, Liang Liang, Ellena Gemmen, Andre Fernandes, Sergio A. Paredes-Navia, Jacky C. Prucz

Publikováno v: Journal of Solid State Chemistry. 294:121831

Perovskite calcium manganate CaMnO3-δ is representative of an essential group of semiconductors with unique physical phenomena including colossal magnetoresistance and thermoelectric properties. For the large-scale applications that require the util

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::deb35b85759f04ce1fd370d98248d369
https://doi.org/10.1016/j.jssc.2020.121831

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