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Nanocrystalline gadolinium-doped ceria (GDC) for SOFCs by an environmentally-friendly single step method

Choolaei, Mohammadmehdi, Cai, Qiong, Slade, Robert C.T. and Amini Horri, Bahman (2018) Nanocrystalline gadolinium-doped ceria (GDC) for SOFCs by an environmentally-friendly single step method Ceramics International, 44 (11). pp. 13286-13292.

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Nanocrystalline gadolinium-doped ceria (GDC) was synthesized by a single step, low cost and environmentally friendly method using ammonium tartrate as an inexpensive, green and novel precipitant. The precipitate obtained during the process was calcined at 400 and 600 °C and the effect on the final microstructural properties of the powders of differing process variables were studied. The synthesized GDC samples were analysed using a range of different techniques, including XRD, TG/DSC, FESEM, STEM, and FT-IR and Raman spectroscopies. The thermal (TG/DSC), XRD and Raman spectroscopic analyses confirm the formation of a single crystalline phase with a cubic (fluorite) unit cell and formed at a low calcination temperature (400 °C). XRD profiles permitted estimation of crystallite sizes as < 20 nm, which was further confirmed by STEM and FESEM micrographs indicating the formation of quasi-spherical particles with uniform particle sizes in the range 10–30 nm. This study will aid understanding of effects of process variables on the properties of doped metal-oxide powders prepared using the carboxylate route

Item Type: Article
Divisions : Faculty of Engineering and Physical Sciences > Chemical and Process Engineering
Authors :
Slade, Robert C.T.
Amini Horri,
Date : 19 April 2018
DOI : 10.1016/j.ceramint.2018.04.159
Copyright Disclaimer : © 2018. This manuscript version is made available under the CC-BY-NC-ND 4.0 license
Uncontrolled Keywords : Gd2O3-doped CeO2; Intermediate temperature electrolytes; Ammonium tartrate; Nanocrystalline powder; Solid oxide fuel cell
Depositing User : Clive Harris
Date Deposited : 25 May 2018 09:00
Last Modified : 20 Apr 2019 02:08

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