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Comparative electrochemical investigation of zinc based nano-composite anode materials for solid oxide fuel cell
COMSATS Univ Islamabad, Dept Elect Engn, Islamabad 44000, Pakistan..
COMSATS Univ Islamabad, Dept Phys, Lahore Campus, Lahore 54000, Pakistan..
COMSATS Univ Islamabad, Dept Phys, Lahore Campus, Lahore 54000, Pakistan..
KTH, School of Industrial Engineering and Management (ITM), Energy Technology. COMSATS Univ Islamabad, Dept Phys, Lahore Campus, Lahore 54000, Pakistan.
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2019 (English)In: Ceramics International, ISSN 0272-8842, E-ISSN 1873-3956, Vol. 45, no 1, p. 1077-1083Article in journal (Refereed) Published
Abstract [en]

The structural and electrochemical properties of zinc based nano-composites anode materials with a composition of X0.25Ti0.5Zn0.70 (where X = Cu, Mn, Ag) have been investigated in this present study. The proposed Xo.zsTiousZno.70 oxide materials have been synthesized through sol-gel method. The doping effect of Cu, Mn, and Ag on TiZn oxides were analyzed in terms of electronic conduction and power density in hydrogen atmosphere at comparatively low temperature in the range of 650 degrees C. The crystal structure and surface morphology were examined by X-ray diffraction (XRD) and scanning electron microscopy (SEM) analysis techniques. The XRD patterns of composites depict that the average crystalline sizes lie in the range of 20-100 nm. Four -probe DC conductivity technique was used to measure the conductivity of the materials and maximum electrical conductivity of Ag0.25Ti0.05Zn0.70 oxide was found to be 7.81 S/cm at 650 degrees C. The band gap and absorption spectra were determined by ultra-violet visible (UV-Vis) and Fourier Transform Infrared spectroscopy (FTIR) techniques respectively. The maximum power density was achieved to be 354 mW/cm(2) at 650 degrees C by Ag0.25Ti0.05Zn0.70 oxide anode with SDC (electrolyte) and BSCF (conventional cathode) materials.

Place, publisher, year, edition, pages
Elsevier, 2019. Vol. 45, no 1, p. 1077-1083
Keywords [en]
Nano-composite anode, Low temperature SOFC, Zinc based materials, Non-symmetrical cell, Silver catalyst
National Category
Ceramics
Identifiers
URN: urn:nbn:se:kth:diva-240703DOI: 10.1016/j.ceramint.2018.09.288ISI: 000452570300134Scopus ID: 2-s2.0-85054184159OAI: oai:DiVA.org:kth-240703DiVA, id: diva2:1275014
Note

QC 20190104

Available from: 2019-01-04 Created: 2019-01-04 Last updated: 2019-01-04Bibliographically approved

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