A wet-chemical route for the preparation of Ni–BaCe0.9Y0.1O3−δ cermet anodes for IT-SOFCs

Laure Chevallier, Milan Zunic, Vincenzo Esposito, Elisabetta Di Bartolomeo, Enrico Traversa

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

Nano-sized BaCe0.9Y0.1O3−δ (BCY10) protonic conductor powders were used to prepare Ni-BCY10 cermets for anode-supported intermediate temperature solid oxide fuel cells. A new wet-chemical route was developed starting from Ni nitrates as precursors for NiO. BCY10 powders were suspended in a Ni nitrate aqueous solution that was evaporated to allow NiO precipitation on the BCY grains, obtaining NiO-BCY10 cermets. To obtain the final Ni-BCY10 anodes, pellets were reduced in dry H2 at 700 °C. The structural and microstructural properties of the pellets were investigated using X-ray diffraction analysis and field emission scanning electron microscopy. A homogeneous dispersion of perovskite and nickel phases was observed. The chemical stability of the anodes was evaluated under wet H2 and CO2 atmosphere at 700 °C. The electrical properties of the Ni-BCY10 pellets were evaluated using electrochemical impedance spectroscopy measurements. The Ni-BCY10 cermet electrodes showed large electronic conductivity, demonstrating percolation through the Ni particles, and low area specific resistance at the BCY10 interface. These characteristics make the cermet suitable for application in BCY-based protonic fuel cells. The developed chemical route offers a simple and low-cost procedure to obtain promising high performance anodes.
Original languageEnglish
JournalSolid State Ionics
Volume180
Issue number9-10
Pages (from-to)715-720
ISSN0167-2738
DOIs
Publication statusPublished - 2009
Externally publishedYes

Cite this

Chevallier, Laure ; Zunic, Milan ; Esposito, Vincenzo ; Di Bartolomeo, Elisabetta ; Traversa, Enrico. / A wet-chemical route for the preparation of Ni–BaCe0.9Y0.1O3−δ cermet anodes for IT-SOFCs. In: Solid State Ionics. 2009 ; Vol. 180, No. 9-10. pp. 715-720.
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title = "A wet-chemical route for the preparation of Ni–BaCe0.9Y0.1O3−δ cermet anodes for IT-SOFCs",
abstract = "Nano-sized BaCe0.9Y0.1O3−δ (BCY10) protonic conductor powders were used to prepare Ni-BCY10 cermets for anode-supported intermediate temperature solid oxide fuel cells. A new wet-chemical route was developed starting from Ni nitrates as precursors for NiO. BCY10 powders were suspended in a Ni nitrate aqueous solution that was evaporated to allow NiO precipitation on the BCY grains, obtaining NiO-BCY10 cermets. To obtain the final Ni-BCY10 anodes, pellets were reduced in dry H2 at 700 °C. The structural and microstructural properties of the pellets were investigated using X-ray diffraction analysis and field emission scanning electron microscopy. A homogeneous dispersion of perovskite and nickel phases was observed. The chemical stability of the anodes was evaluated under wet H2 and CO2 atmosphere at 700 °C. The electrical properties of the Ni-BCY10 pellets were evaluated using electrochemical impedance spectroscopy measurements. The Ni-BCY10 cermet electrodes showed large electronic conductivity, demonstrating percolation through the Ni particles, and low area specific resistance at the BCY10 interface. These characteristics make the cermet suitable for application in BCY-based protonic fuel cells. The developed chemical route offers a simple and low-cost procedure to obtain promising high performance anodes.",
author = "Laure Chevallier and Milan Zunic and Vincenzo Esposito and {Di Bartolomeo}, Elisabetta and Enrico Traversa",
year = "2009",
doi = "10.1016/j.ssi.2009.03.005",
language = "English",
volume = "180",
pages = "715--720",
journal = "Solid State Ionics",
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A wet-chemical route for the preparation of Ni–BaCe0.9Y0.1O3−δ cermet anodes for IT-SOFCs. / Chevallier, Laure; Zunic, Milan; Esposito, Vincenzo; Di Bartolomeo, Elisabetta; Traversa, Enrico.

In: Solid State Ionics, Vol. 180, No. 9-10, 2009, p. 715-720.

Research output: Contribution to journalJournal articleResearchpeer-review

TY - JOUR

T1 - A wet-chemical route for the preparation of Ni–BaCe0.9Y0.1O3−δ cermet anodes for IT-SOFCs

AU - Chevallier, Laure

AU - Zunic, Milan

AU - Esposito, Vincenzo

AU - Di Bartolomeo, Elisabetta

AU - Traversa, Enrico

PY - 2009

Y1 - 2009

N2 - Nano-sized BaCe0.9Y0.1O3−δ (BCY10) protonic conductor powders were used to prepare Ni-BCY10 cermets for anode-supported intermediate temperature solid oxide fuel cells. A new wet-chemical route was developed starting from Ni nitrates as precursors for NiO. BCY10 powders were suspended in a Ni nitrate aqueous solution that was evaporated to allow NiO precipitation on the BCY grains, obtaining NiO-BCY10 cermets. To obtain the final Ni-BCY10 anodes, pellets were reduced in dry H2 at 700 °C. The structural and microstructural properties of the pellets were investigated using X-ray diffraction analysis and field emission scanning electron microscopy. A homogeneous dispersion of perovskite and nickel phases was observed. The chemical stability of the anodes was evaluated under wet H2 and CO2 atmosphere at 700 °C. The electrical properties of the Ni-BCY10 pellets were evaluated using electrochemical impedance spectroscopy measurements. The Ni-BCY10 cermet electrodes showed large electronic conductivity, demonstrating percolation through the Ni particles, and low area specific resistance at the BCY10 interface. These characteristics make the cermet suitable for application in BCY-based protonic fuel cells. The developed chemical route offers a simple and low-cost procedure to obtain promising high performance anodes.

AB - Nano-sized BaCe0.9Y0.1O3−δ (BCY10) protonic conductor powders were used to prepare Ni-BCY10 cermets for anode-supported intermediate temperature solid oxide fuel cells. A new wet-chemical route was developed starting from Ni nitrates as precursors for NiO. BCY10 powders were suspended in a Ni nitrate aqueous solution that was evaporated to allow NiO precipitation on the BCY grains, obtaining NiO-BCY10 cermets. To obtain the final Ni-BCY10 anodes, pellets were reduced in dry H2 at 700 °C. The structural and microstructural properties of the pellets were investigated using X-ray diffraction analysis and field emission scanning electron microscopy. A homogeneous dispersion of perovskite and nickel phases was observed. The chemical stability of the anodes was evaluated under wet H2 and CO2 atmosphere at 700 °C. The electrical properties of the Ni-BCY10 pellets were evaluated using electrochemical impedance spectroscopy measurements. The Ni-BCY10 cermet electrodes showed large electronic conductivity, demonstrating percolation through the Ni particles, and low area specific resistance at the BCY10 interface. These characteristics make the cermet suitable for application in BCY-based protonic fuel cells. The developed chemical route offers a simple and low-cost procedure to obtain promising high performance anodes.

U2 - 10.1016/j.ssi.2009.03.005

DO - 10.1016/j.ssi.2009.03.005

M3 - Journal article

VL - 180

SP - 715

EP - 720

JO - Solid State Ionics

JF - Solid State Ionics

SN - 0167-2738

IS - 9-10

ER -