The Effect of Ni Doping on the Performance and Electronic Structure of LSCF Cathodes Used for IT-SOFCs

@article{ ISI:000423140500002,
Author = {Longo, Alessandro and Liotta, Leonarda F. and Banerjee, Dipanjan and La
   Parola, Valeria and Puleo, Fabrizio and Cavallari, Chiara and Sahle,
   Christoph J. and Sala, Marco Moretti and Martorana, Antonino},
Title = {{The Effect of Ni Doping on the Performance and Electronic Structure of
   LSCF Cathodes Used for IT-SOFCs}},
Journal = {{JOURNAL OF PHYSICAL CHEMISTRY C}},
Year = {{2018}},
Volume = {{122}},
Number = {{2}},
Pages = {{1003-1013}},
Month = {{JAN 18}},
Abstract = {{We investigated the effect of nickel doping on the electronic structure
   and performance of nanostructured
   La0.6Sr0.4Co0.2Fe0.8-0.03Ni0.03O3-delta prepared by the one-pot sol gel
   method. The commercial undoped La0.6Sr0.4Co0.2Fe0.8O3-delta (ISCF0.8)
   was used as reference. Moreover, for comparison, Ni (3 mol %) was
   deposited by wetness impregnation over the La0.6Sr0.4Co0.2Fe0.8O3-delta.
   We show by in situ X-ray absorption spectroscopy at 900 degrees C under
   air flow that nickel enters the B perovskite site of the material and
   favors the stabilization of the cobalt oxidation state, as evidenced by
   the delay in the decrease of the average Co valence with respect to
   undoped samples. Our results are further supported by in situ X-ray
   Raman spectroscopy (YRS) that allowed us to monitor the temperature
   evolution of the 0 Kedge. XRS evidences that nickel-doped LSCF shows
   unmodified O2p-TM3d density of states, which proves that the Co
   oxidation state is preserved. Electrochemical impedance spectroscopy
   measurements were carried out over half-cell systems consisting of
   LSCF-based materials deposited onto a Ce0.8Gd0.2O2-delta electrolyte.
   The improvement of the electrochemical performances of the Ni-doped
   La0.6Sr0.4Co0.2Fe0.8-0.03Ni0.03O3-delta sample with respect to a
   reference Ni-impregnated LSCF is attributed to the stabilisation of the
   TM-O-6 structural units, which were recently proposed as the functional
   units for oxygen reduction.}},
Publisher = {{AMER CHEMICAL SOC}},
Address = {{1155 16TH ST, NW, WASHINGTON, DC 20036 USA}},
Type = {{Article}},
Language = {{English}},
Affiliation = {{Longo, A (Corresponding Author), ESRF, Dutch Belgian Beamline, Netherlands Org Sci Res NWO, CS40220,71 Ave Martyrs, F-38000 Grenoble, France.
   Longo, A; Liotta, LF (Corresponding Author), UOS Palermo, CNR, ISMN, Via Ugo La Malfa 153, I-90146 Palermo, Italy.
   Longo, Alessandro, ESRF, Dutch Belgian Beamline, Netherlands Org Sci Res NWO, CS40220,71 Ave Martyrs, F-38000 Grenoble, France.
   Longo, Alessandro; Liotta, Leonarda F.; La Parola, Valeria; Puleo, Fabrizio, UOS Palermo, CNR, ISMN, Via Ugo La Malfa 153, I-90146 Palermo, Italy.
   Banerjee, Dipanjan, ESRF, Dutch Belgian Beamline DUBBLE, CS40220, F-38043 Grenoble 9, France.
   Cavallari, Chiara; Sahle, Christoph J.; Sala, Marco Moretti, European Synchrotron Radiat Facil, 71 Ave Martyrs, F-38000 Grenoble, France.
   Martorana, Antonino, Univ Palermo, Dipartimento Fis & Chim, Viale Sci Ed 17, I-90128 Palermo, Italy.}},
DOI = {{10.1021/acs.jpcc.7b07626}},
ISSN = {{1932-7447}},
Keywords-Plus = {{X-RAY-ABSORPTION; THIN-FILM CATHODES; OXIDE FUEL-CELLS; IN-SITU;
   ELECTROCHEMICAL PROPERTIES; PEROVSKITE OXIDES; LOCAL-STRUCTURE;
   LA0.6SR0.4CO0.2FE0.8O3-DELTA; SPECTROSCOPY; LANI1-XFEXO3}},
Research-Areas = {{Chemistry; Science & Technology - Other Topics; Materials Science}},
Web-of-Science-Categories  = {{Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science,
   Multidisciplinary}},
Author-Email = {{alessandro.longo@esrf.fr
   leonarda.liotta@ismn.cnr.it}},
ResearcherID-Numbers = {{Alessandro, Longo/AAY-4553-2020
   Sahle, Christoph/P-6715-2019
   Moretti, Marco/AAF-9255-2019
   MARTORANA, Antonino/H-9653-2015
   Liotta, Leonarda/Q-1937-2019
   La Parola, Valeria/Q-1934-2019
   }},
ORCID-Numbers = {{Sahle, Christoph/0000-0001-8645-3163
   Moretti, Marco/0000-0002-9744-9976
   MARTORANA, Antonino/0000-0003-1911-1627
   Liotta, Leonarda/0000-0001-5442-2469
   La Parola, Valeria/0000-0001-7695-6031
   alessandro, longo/0000-0002-8819-2128
   Banerjee, Dipanjan/0000-0002-1933-8066}},
Number-of-Cited-References = {{47}},
Times-Cited = {{11}},
Usage-Count-Last-180-days = {{2}},
Usage-Count-Since-2013 = {{27}},
Journal-ISO = {{J. Phys. Chem. C}},
Doc-Delivery-Number = {{FT4QT}},
Unique-ID = {{ISI:000423140500002}},
DA = {{2020-12-22}},
}