Solis Díaz, C.; Balaguer Ramirez, M.; Bozza, F.; Bonanos, N.; Serra Alfaro, JM. (2014). Catalytic surface promotion of highly active La0.85Sr0.15Cr0.8Ni0.2O3-delta anodes for La5.6WO11.4-delta based proton conducting fuel cells. Applied Catalysis B Environmental. 147:203-207. https://doi.org/10.1016/j.apcatb.2013.08.044
Por favor, use este identificador para citar o enlazar este ítem: http://hdl.handle.net/10251/139920
Title:
|
Catalytic surface promotion of highly active La0.85Sr0.15Cr0.8Ni0.2O3-delta anodes for La5.6WO11.4-delta based proton conducting fuel cells
|
Author:
|
Solis Díaz, Cecilia
Balaguer Ramirez, Maria
Bozza, F.
Bonanos, Nikos
Serra Alfaro, José Manuel
|
UPV Unit:
|
Universitat Politècnica de València. Instituto Universitario Mixto de Tecnología Química - Institut Universitari Mixt de Tecnologia Química
|
Issued date:
|
|
Abstract:
|
[EN] La0.85Sr0.15CrO3-delta (LSC), La0.85Sr0.15Cr0.8Ni0.2O3-delta (LSCN) and LSCN infiltrated with Ni nanoparticles were tested as anodes for symmetrical cells based on La5.6WO11.4-delta (LWO) protonic electrolyte. These ...[+]
[EN] La0.85Sr0.15CrO3-delta (LSC), La0.85Sr0.15Cr0.8Ni0.2O3-delta (LSCN) and LSCN infiltrated with Ni nanoparticles were tested as anodes for symmetrical cells based on La5.6WO11.4-delta (LWO) protonic electrolyte. These chromite-based electrode materials are compatible with LWO material, in contrast to the widely used NiO. Under typical anode reducing conditions, Ni is segregated from the LSCN lattice on the grain surface as metallic Ni nanoparticles, which are proved to be compatible with LWO in reducing conditions. These Ni nanoparticles become the catalytic active sites for the H-2 oxidation reaction in proton conducing anodes and the electrode performance is substantially improved regarding to pure LSC. Ni nanoparticle infiltration further improves the catalytic promotion of the anode, reducing the polarization resistance (R-p) previously limited by low frequency surface related processes. Indeed, the R-p, values achieved for LSCN infiltrated with Ni, e.g. 0.47 Omega cm(2) at 700 degrees C, suggest the practical application of this kind of anodes in proton conducting solid oxide fuel cells (PC-SOFC). (C) 2013 Elsevier B.V. All rights reserved.
[-]
|
Subjects:
|
Anode
,
Proton conducting fuel cell
,
Chromite
,
Lanthanum tungstate
,
Catalyst
|
Copyrigths:
|
Reserva de todos los derechos
|
Source:
|
Applied Catalysis B Environmental. (issn:
0926-3373
)
|
DOI:
|
10.1016/j.apcatb.2013.08.044
|
Publisher:
|
Elsevier
|
Publisher version:
|
https://doi.org/10.1016/j.apcatb.2013.08.044
|
Project ID:
|
info:eu-repo/grantAgreement/EC/FP7/227560/EU
Ministerio de Ciencia e Innovación/ENE2011-24761
CSIC/2008801093
|
Thanks:
|
Funding from European Union (FP7 Project EFFIPRO - Grant Agreement 227560), the Spanish Government (ENE2011-24761, SEV-2012-0267 and CSIC Intramural 2008801093 grants) is kindly acknowledged. The authors thank M. Fabuel ...[+]
Funding from European Union (FP7 Project EFFIPRO - Grant Agreement 227560), the Spanish Government (ENE2011-24761, SEV-2012-0267 and CSIC Intramural 2008801093 grants) is kindly acknowledged. The authors thank M. Fabuel for sample preparation.
[-]
|
Type:
|
Artículo
|