Sains Malaysiana 43(9)(2014): 1429–1432

 

Effect of Metal Chloride Pre-Cursor on the Structure of Yb-Doped Ba(Ce, Zr)O3 Ceramics Electrolyte: A Comparative Study with Different Metal Salts

(Kesan Bahan Pelopor Logam Klorida ke atas Struktur Yb Terdop Ba(Ce, Zr)O3 Elektrolit Seramik: Suatu Kajian Perbandingan antara Garam Logam yang Berbeza)

 

 

N. OSMAN1*, M.H. YAAKOB1 & I.A. TALIB2

 

1Faculty of Applied Sciences, Universiti Teknologi MARA

02600 Arau, Perlis, Malaysia

 

2Faculty of Science & Technology, Universiti Kebangsaan Malaysia

43600 Bangi, Selangor, Malaysia

 

Diserahkan: 10 Februari 2012/Diterima: 17 Disember 2013

 

ABSTRACT

This paper discusses the effect of a metal chloride pre-cursor on the phase formation of Yb-doped Ba(Ce, Zr)O3 solid electrolyte derived from a sol-gel method via acetate and chloride salts. The use of metal chloride as a pre-cursor showed the increased in thermal decomposition temperature (Ttd≈1360oC) compared to the metal nitrate pre-cursor (Ttd≈1280oC) and (b) leading to the formation of impurity phases. At calcination temperature of 1500oC, the sample prepared from metal chloride did not form a single-phase of Ba(Ce, Zr)O3. Impurity phases of BaCl2, BaCO3 and (Ce, Zr)O2 were detected in the sample as proven by XRD result. A high purity compound at relatively lower temperature (T=1400oC) was only obtained for the sample that prepared from metal nitrate compared to acetate and chloride (T>1500oC) and carbonate and oxide (T=1500oC) pre-cursors.

 

Keywords: Ceramics; perovskites; thermal properties; X-ray technique

 

ABSTRAK

Kertas ini membincangkan kesan bahan pelopor logam klorida ke atas fasa pembentukan Yb terdop Ba(Ce, Zr)O3 elektrolit pepejal yang disediakan secara kaedah sol-gel menggunakan garam berasaskan asetat dan klorida. Penggunaan logam klorida sebagai bahan pelopor menunjukkan peningkatan suhu penguraian terma (Ttd≈1360 oC) berbanding dengan logam nitrat sebagai bahan pelopor (Ttd≈1280oC) dan menjana ke arah pembentukan fasa bendasing. Pada suhu pengkalsinan 1500oC, sampel yang disediakan daripada logam klorida tidak membentuk fasa tunggal Ba(Ce, Zr)O3. Fasa bendasing seperti BaCl2, BaCO3 dan (Ce, Zr)O2 telah dikesan di dalam sampel seperti disahkan oleh keputusan sinar-X. Sebatian yang berketulenan tinggi diperoleh pada suhu pengkalsinan yang secara relatifnya rendah (T=1400oC) adalah sampel yang disediakan daripada bahan pelopor berasaskan logam nitrat dibandingkan dengan bahan pelopor berasaskan asetat dan klorida (T>1500oC) dan karbonat dan oksida (T=1500oC).

 

Kata kunci: Ciri terma; perovskite; seramik; teknik pembelauan sinar-X

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*Pengarang untuk surat-menyurat; email: fisha@perlis.uitm.edu.my

 

 

 

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