Ultrasound assisted synthesis of Gd and Nd doped ceria electrolyte for solid oxide fuel cells

OKKAY, Hikmet; Bayramoǧlu, Mahmut; Öksüzömer, M. Faruk

doi:10.1016/j.ceramint.2012.12.021

Ultrasound assisted synthesis of Gd and Nd doped ceria electrolyte for solid oxide fuel cells

Yazarlar (3)

Doç. Dr. Hikmet OKKAY Yalova Üniversitesi, Türkiye

Mahmut Bayramoǧlu
Gebze Teknik Üniversitesi, Türkiye

M. Faruk Öksüzömer
Istanbul Üniversitesi, Türkiye

Makale Türü	Özgün Makale
Makale Alt Türü	SSCI, AHCI, SCI, SCI-Exp dergilerinde yayınlanan tam makale
Dergi Adı	Ceramics International
Dergi ISSN	0272-8842 Wos Dergi Scopus Dergi
Dergi Tarandığı Indeksler	SCI-Expanded
Makale Dili	İngilizce
Basım Tarihi	07-2013
Cilt No	39
Sayı	5
Sayfalar	5219 / 5225
DOI Numarası	10.1016/j.ceramint.2012.12.021
Makale Linki	http://dx.doi.org/10.1016/j.ceramint.2012.12.021

Özet

In this study, the ceramic powders of Ce1-xGdxO 2-x/2 and Ce1-xNdxO2-x/2 (x=0.05, 0.10, 0.15, 0.20 and 0.25) were synthesized by ultrasound assisted co-precipitation method. The ionic conductivity was studied as a function of dopant concentration over the temperature range of 300-800 °C in air, using the impedance spectroscopy. The maximum ionic conductivity, σ 800 °C=4.01×10^-2 Scm^-1 with the activation energy, Ea=0.828 kJmol^-1 and σ 800 °C=3.80×10^-2 Scm^-1 with the activation energy, Ea=0.838 kJmol^-1 were obtained for Ce0.90Gd0.10O1.95 and Ce0.85Nd 0.15O1.925 electrolytes, respectively. The average grain size was found to be in the range of 0.3-0.6 μm for gadolinium doped ceria and 0.2-0.4 μm for neodymium doped ceria. The uniformly fine crystallite sizes (average 12-13 nm) of the ultrasound assisted prepared powders enabled sintering of the samples into highly dense (over 95%) ceramic pellets at 1200 °C (5 °C min^-1) for 6 h. © 2012 Elsevier Ltd and Techna Group S.r.l.

Anahtar Kelimeler

C. Ionic conductivity | SOFC | Solid electrolyte | Ultrasound

Science Direct

BM Sürdürülebilir Kalkınma Amaçları

Atıf Sayıları
SCOPUS	12

Ultrasound assisted synthesis of Gd and Nd doped ceria electrolyte for solid oxide fuel cells

Dergi Adı	Ceramics International
Yayıncı	Elsevier Ltd
Açık Erişim	Hayır
ISSN	0272-8842
E-ISSN	1873-3956
CiteScore	9,1
SJR	1,034
SNIP	1,257

Ultrasound assisted synthesis of Gd and Nd doped ceria electrolyte for solid oxide fuel cells

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