Electrochemical behaviour of Co-doped LSGM perovskltes prepared by sol-gel synthesis

Riccardo Polini; Alessia Falsetti; Enrico Traversa; Oliver Schäf; Philippe Knauth

Electrochemical behaviour of Co-doped LSGM perovskltes prepared by sol-gel synthesis

Riccardo Polini^*, Alessia Falsetti, Enrico Traversa, Oliver Schäf, Philippe Knauth

^*Corresponding author for this work

Research output: Contribution to journal › Conference article › peer-review

2 Scopus citations

Abstract

La_0.8Sr_0.2Ga_0.8Mg_0.2-xCo _xO_3-δ (LSGMC) powders containing different amounts of Co (x = 0.05 and 0.085) were prepared by a citrate sol-gel method. Crystalline powders were obtained by firing at 1000°C (10 h) and dense high-purity pellets were prepared by pressing (300 MPa) and sintering in air at 1475°C (5, 10 and 20 h). The sintered pellets of LSGMC were characterized by X-Ray Diffraction (XRD) Scanning Electron Microscopy (SEM) and Energy Dispersive Spectroscopy (EDS). The conductivity of sintered LSGMC pellets containing different amounts of Co ions in the B sites of the perovskite lattice was assessed by electrochemical impedance spectroscopy (EIS) in the 250-750°C temperature range. Conductivity values and apparent activation energies were in good agreement with previously published data referring to materials with same composition, but prepared by solid-state reaction.

Original language	English (US)
Article number	K3.15
Pages (from-to)	211-216
Number of pages	6
Journal	Materials Research Society Symposium Proceedings
Volume	835
State	Published - 2005
Externally published	Yes
Event	Solid State Ionics - 2004 - Boston, MA, United States Duration: Nov 29 2004 → Dec 2 2004

ASJC Scopus subject areas

Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering
General Materials Science

Cite this

@article{3c33fea64e5f4744954979542dd8f522,

title = "Electrochemical behaviour of Co-doped LSGM perovskltes prepared by sol-gel synthesis",

abstract = "La0.8Sr0.2Ga0.8Mg0.2-xCo xO3-δ (LSGMC) powders containing different amounts of Co (x = 0.05 and 0.085) were prepared by a citrate sol-gel method. Crystalline powders were obtained by firing at 1000°C (10 h) and dense high-purity pellets were prepared by pressing (300 MPa) and sintering in air at 1475°C (5, 10 and 20 h). The sintered pellets of LSGMC were characterized by X-Ray Diffraction (XRD) Scanning Electron Microscopy (SEM) and Energy Dispersive Spectroscopy (EDS). The conductivity of sintered LSGMC pellets containing different amounts of Co ions in the B sites of the perovskite lattice was assessed by electrochemical impedance spectroscopy (EIS) in the 250-750°C temperature range. Conductivity values and apparent activation energies were in good agreement with previously published data referring to materials with same composition, but prepared by solid-state reaction.",

author = "Riccardo Polini and Alessia Falsetti and Enrico Traversa and Oliver Sch{\"a}f and Philippe Knauth",

year = "2005",

language = "English (US)",

volume = "835",

pages = "211--216",

journal = "Materials Research Society Symposium Proceedings",

issn = "0272-9172",

publisher = "Materials Research Society",

note = "Solid State Ionics - 2004 ; Conference date: 29-11-2004 Through 02-12-2004",

}

TY - JOUR

T1 - Electrochemical behaviour of Co-doped LSGM perovskltes prepared by sol-gel synthesis

AU - Polini, Riccardo

AU - Falsetti, Alessia

AU - Traversa, Enrico

AU - Schäf, Oliver

AU - Knauth, Philippe

PY - 2005

Y1 - 2005

N2 - La0.8Sr0.2Ga0.8Mg0.2-xCo xO3-δ (LSGMC) powders containing different amounts of Co (x = 0.05 and 0.085) were prepared by a citrate sol-gel method. Crystalline powders were obtained by firing at 1000°C (10 h) and dense high-purity pellets were prepared by pressing (300 MPa) and sintering in air at 1475°C (5, 10 and 20 h). The sintered pellets of LSGMC were characterized by X-Ray Diffraction (XRD) Scanning Electron Microscopy (SEM) and Energy Dispersive Spectroscopy (EDS). The conductivity of sintered LSGMC pellets containing different amounts of Co ions in the B sites of the perovskite lattice was assessed by electrochemical impedance spectroscopy (EIS) in the 250-750°C temperature range. Conductivity values and apparent activation energies were in good agreement with previously published data referring to materials with same composition, but prepared by solid-state reaction.

AB - La0.8Sr0.2Ga0.8Mg0.2-xCo xO3-δ (LSGMC) powders containing different amounts of Co (x = 0.05 and 0.085) were prepared by a citrate sol-gel method. Crystalline powders were obtained by firing at 1000°C (10 h) and dense high-purity pellets were prepared by pressing (300 MPa) and sintering in air at 1475°C (5, 10 and 20 h). The sintered pellets of LSGMC were characterized by X-Ray Diffraction (XRD) Scanning Electron Microscopy (SEM) and Energy Dispersive Spectroscopy (EDS). The conductivity of sintered LSGMC pellets containing different amounts of Co ions in the B sites of the perovskite lattice was assessed by electrochemical impedance spectroscopy (EIS) in the 250-750°C temperature range. Conductivity values and apparent activation energies were in good agreement with previously published data referring to materials with same composition, but prepared by solid-state reaction.

UR - http://www.scopus.com/inward/record.url?scp=20444410036&partnerID=8YFLogxK

M3 - Conference article

AN - SCOPUS:20444410036

SN - 0272-9172

VL - 835

SP - 211

EP - 216

JO - Materials Research Society Symposium Proceedings

JF - Materials Research Society Symposium Proceedings

M1 - K3.15

T2 - Solid State Ionics - 2004

Y2 - 29 November 2004 through 2 December 2004

ER -

Electrochemical behaviour of Co-doped LSGM perovskltes prepared by sol-gel synthesis

Abstract

ASJC Scopus subject areas

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