Electrochemical and structural characterization of BaCe0.7Zr0.15Y0.1Zn0.05O3-δ as an electrolyte for SOFC-H
Electrochemical and structural characterization of BaCe0.7Zr0.15Y0.1Zn0.05O3-δ as an electrolyte for SOFC-H
- Author(s): A. Afif ; S.M.H. Rahman ; N. Radenahmad ; A.H. bin Karim ; H.Q.H.H. Absah ; A.K. Azad
- DOI: 10.1049/cp.2018.1582
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- Author(s): A. Afif ; S.M.H. Rahman ; N. Radenahmad ; A.H. bin Karim ; H.Q.H.H. Absah ; A.K. Azad Source: 7th Brunei International Conference on Engineering and Technology 2018 (BICET 2018), 2018 page (4 pp.)
- Conference: 7th Brunei International Conference on Engineering and Technology 2018 (BICET 2018)
- DOI: 10.1049/cp.2018.1582
- ISBN: 978-1-83953-002-9
- Location: Bandar Seri Begawan, Brunei
- Conference date: 12-14 Nov. 2018
- Format: PDF
As a potential electrolyte for proton-conducting solid oxide fuel cells (SOFC-Hs) and to get better protonic conductivity and stability, zinc doped BCZY material has been found to be promising. In this study, we report a new composition of proton conductors BaCe0.7Zr0.15Y0.1Zn0.05O3-δ (BCZYZn10) which was investigated using XRD, SEM and conductivity measurements. Rietveld refinement of the XRD data revel a cubic perovskite structure with Pm-3m space group. Rietveld analysis of BaCe0.7Zr0.15Y0.1Zn0.05O3-δ shows the unit cell parameter is a = 4.3582(7) Å. Scanning electron microscopy images shows that the grain sizes are large and compact which gives the sample high density and good protonic conductivity. The total conductivity in wet atmosphere is significantly higher than that of dry condition and the conductivity was found to be 0.004032 Scm-1 and 0.00164 Scm-1 at 600 oC in wet and dry Ar, respectively. This study indicated that perovskite electrolyte BCZYZn10 is a promising material for the next generation intermediate temperature solid oxide fuel cells (IT-SOFCs).
Inspec keywords: grain size; electrolytes; X-ray diffraction; zirconium compounds; zinc compounds; solid oxide fuel cells; barium compounds; yttrium compounds; cerium compounds; scanning electron microscopy
Subjects: Fuel cells; Fuel cells; Electrochemistry and electrophoresis
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