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Title: LSM-YSZ Cathodes with Reaction-Infiltrated Nanoparticles

Abstract

To improve the LSM-YSZ cathode performance of intermediate temperature solid oxide fuel cells (SOFCs), Sm0.6Sr0.4CoO3-sigma (SSC) perovskite nanoparticles are incorporated into the cathodes by a reaction-infiltration process. The SSC particles are {approx}20 to 80nm in diameter, and intimately adhere to the pore walls of the preformed LSM-YSZ cathodes. The SSC particles dramatically enhance single-cell performance with a 97 percent H2+3 percent H2O fuel, between 600 C and 800 C. Consideration of a simplified TPB (triple phase boundary) reaction geometry indicates that the enhancement may be attributed to the high electrocatalytic activity of SSC for electrochemical reduction of oxygen in a region that can be located a small distance away from the strict triple phase boundaries. The implication of this work for developing high-performance electrodes is also discussed.

Authors:
; ; ; ;
Publication Date:
Research Org.:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
USDOE Director, Office of Science
OSTI Identifier:
891348
Report Number(s):
LBNL-58757
R&D Project: 500601; BnR: AA2530000; TRN: US0605369
DOE Contract Number:  
DE-AC02-05CH11231
Resource Type:
Journal Article
Journal Name:
Electrochemical Society (ECS)
Additional Journal Information:
Journal Volume: 153; Journal Issue: 6; Related Information: Journal Publication Date: 2006
Country of Publication:
United States
Language:
English
Subject:
30 DIRECT ENERGY CONVERSION; 36 MATERIALS SCIENCE; 43 PARTICLE ACCELERATORS; CATHODES; ELECTRODES; GEOMETRY; OXYGEN; PERFORMANCE; PEROVSKITE; SOLID OXIDE FUEL CELLS; SUPERCONDUCTING SUPER COLLIDER

Citation Formats

Lu, Chun, Sholklapper, Tal Z, Jacobson, Craig P, Visco, StevenJ, and De Jonghe, Lutgard C. LSM-YSZ Cathodes with Reaction-Infiltrated Nanoparticles. United States: N. p., 2006. Web. doi:10.1149/1.2192733.
Lu, Chun, Sholklapper, Tal Z, Jacobson, Craig P, Visco, StevenJ, & De Jonghe, Lutgard C. LSM-YSZ Cathodes with Reaction-Infiltrated Nanoparticles. United States. https://doi.org/10.1149/1.2192733
Lu, Chun, Sholklapper, Tal Z, Jacobson, Craig P, Visco, StevenJ, and De Jonghe, Lutgard C. 2006. "LSM-YSZ Cathodes with Reaction-Infiltrated Nanoparticles". United States. https://doi.org/10.1149/1.2192733. https://www.osti.gov/servlets/purl/891348.
@article{osti_891348,
title = {LSM-YSZ Cathodes with Reaction-Infiltrated Nanoparticles},
author = {Lu, Chun and Sholklapper, Tal Z and Jacobson, Craig P and Visco, StevenJ and De Jonghe, Lutgard C},
abstractNote = {To improve the LSM-YSZ cathode performance of intermediate temperature solid oxide fuel cells (SOFCs), Sm0.6Sr0.4CoO3-sigma (SSC) perovskite nanoparticles are incorporated into the cathodes by a reaction-infiltration process. The SSC particles are {approx}20 to 80nm in diameter, and intimately adhere to the pore walls of the preformed LSM-YSZ cathodes. The SSC particles dramatically enhance single-cell performance with a 97 percent H2+3 percent H2O fuel, between 600 C and 800 C. Consideration of a simplified TPB (triple phase boundary) reaction geometry indicates that the enhancement may be attributed to the high electrocatalytic activity of SSC for electrochemical reduction of oxygen in a region that can be located a small distance away from the strict triple phase boundaries. The implication of this work for developing high-performance electrodes is also discussed.},
doi = {10.1149/1.2192733},
url = {https://www.osti.gov/biblio/891348}, journal = {Electrochemical Society (ECS)},
number = 6,
volume = 153,
place = {United States},
year = {Tue Jan 31 00:00:00 EST 2006},
month = {Tue Jan 31 00:00:00 EST 2006}
}