首页|Fabrication of Dense Composite Ceramic Electrolyte SDC-(Li/Na)_2CO_3

Fabrication of Dense Composite Ceramic Electrolyte SDC-(Li/Na)_2CO_3

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  • NETL
  • NSTL
  • Trans Tech Publications Ltd
Composite electrolytes made of samarium-doped cerium (SDC, Ce_(0.8)Sm_(0.2)O_(1.9)) and (67 mol% Li/ 33mol% Na)_2CO_3 carbonate salts were investigated in relation to their structure, morphology and porosity of the electrolyte. The fabrication of the SDC-(Li/Na)_2CO_3 composite electrolytes were achieved in two steps: step (1) preparation of the samarium-doped cerium powders by sol-gel; step (2) mixing of the samarium-doped cerium with carbonates in various compositions by solid state reaction. The electrolyte pellets were compacted at different pressures (25 and 50 MPa) and sintered at 600℃, 700℃ and 800℃. The XRD results demonstrated that the introduction of carbonates did not change the SDC phase structure. FESEM images showed that the carbonate component was amorphous and well distributed in the SDC. The lowest porosity (2.92%) was achieved for samples with carbonate content of 30% (SDC7030) sintered at 800℃ and cold pressed at 50MPa.

compositeelectrolytesamarium doped cerium-(Li/Na)_2CO_3pressureless sintering

Jarot Raharjo、Andanastuti Muchtar、Wan Ramli Wan Daud、Norhamidi Muhamad、Edy Heryanto Majlan

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Fuel Cell Institute, Universiti Kebangsaan Malaysia, Malaysia Department of Chemical and Process Engineering, Universiti Kebangsaan Malaysia, Malaysia Agency for the Assessment and Application of Technology, Indonesia

Fuel Cell Institute, Universiti Kebangsaan Malaysia, Malaysia Department of Mechanical and Materials Engineering, Universiti Kebangsaan Malaysia, Malaysia

Fuel Cell Institute, Universiti Kebangsaan Malaysia, Malaysia Department of Chemical and Process Engineering, Universiti Kebangsaan Malaysia, Malaysia

Fuel Cell Institute, Universiti Kebangsaan Malaysia, Malaysia

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2010

10.4028/www.scientific.net/KEM.447-448.666

Key engineering materials

Key engineering materials

ISSN：1013-9826
年,卷(期)：2010.447/448
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