Enhanced ionic conductivity in a composite electrolyte based on cerium oxide-ternary carbonate

Other Title(s)

الموصلية الأيونية المحسنة للالكتروليت المتراكب المكون من أكسيد السيريوم-الكربونات الثلاثية

Joint Authors

Huwaydi, Muhammad Masud
Ammar, Ibrahim Ali
al-Sharif, Abu Bakr Ahmad

Source

مجلة جامعة سبها للعلوم البحتة و التطبيقية

Publisher

Sabha University

Publication Date

2018-03-31

Country of Publication

Libya

No. of Pages

8

Main Subjects

Chemistry

English Abstract

In this paper two-phase composite electrolyte composed of cerium oxide (CeO2) and ternary carbonate (Li/Na/K)2CO3) has been prepared by solid-state reaction.

The structure and the thermal stability of CeO2-ternary carbonate (80:20 wt%) composite were characterised by X-ray powder diffraction (XRD) and simultaneous thermal analysis (STA), respectively.

The AC impedance spectroscopy and four-point DC methods have been employed to investigate the ionic conductivity in ceria-(Li/Na/K)2CO3 composite electrolyte.

The ionic conductivities were carried out in two different atmospheres (air and wet 5% H2-Ar) within the range of temperature 400-600 ºC.

The AC ionic conductivities of the composite electrolyte were found to be in the range of 3.45 × 10?2 to 0.248 S/cm and 5.33 × 10?2 to 0.231 S/cm at 400-600 ºC in air and wet 5% H2-Ar, respectively.

Within the temperature range of 400-600 ºC, the DC ionic of the ceria-carbonate composite were found to be in the range of 6.87 × 10?2 to 0.152 S/cm and 6.36 × 10?2 to 2.53 × 10?2 S/cm in air and wet 5% H2-Ar respectively.

The composite electrolyte was thermal stable in both oxidising and reducing atmosphere as indicated by thermal analysis studies.

Data Type

Conference Papers

Record ID

BIM-1206868

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