Development of high-performance anode/electrolyte/cathode micro-tubular solid oxide fuel cell via phase inversion-based co-extrusion/ co-sintering technique

Ab Rahman, Mazlinda and Othman, Mohd Hafiz Dzarfan and Fansuri, Hamzah and Harun, Zawati and Omar, Ahmad Faiq and Shabri, Hazrul Adzfar and Ravi, Jeganes and A Rahman, Mukhlis and Jaafar, Juhana and Ismail, Ahmad Fauzi and Osman, Nafisah (2020) Development of high-performance anode/electrolyte/cathode micro-tubular solid oxide fuel cell via phase inversion-based co-extrusion/ co-sintering technique. Journal of Power Sources, 467. pp. 1-11. ISSN 0378-7753

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Official URL: https://doi.org/10.1016/j.jpowsour.2020.228345

Abstract

A complete set of triple-layer (anode/electrolyte/cathode) hollow fiber for high temperature micro-tubular solid oxide fuel cell (MT-SOFC) consisting of nickel oxide (NiO) – yttria-stabilized zirconia (YSZ)/YSZ/lanthanum strontium manganite (LSM) – YSZ has been successfully fabricated in this study. A simplified fabrication technique of phase inversion-based co-extrusion/co-sintering has yielded a perfectly bounded sandwich structure with free-delamination and defect layers. The effect of co-sintering temperatures (1300 °C–1450 °C) on the morphologies, elemental distributions, electrolyte gas-tightness, mechanical strength, electrochemical performance and the impedance spectra test are well-inspected. The increase of co-sintering temperature has significant effects on the anode finger-like micro-channels shrinkage where the voids become very sharp-thin structure; and developing a thin gas-tight electrolyte layer. Whereas, rapid co-sintering rate (10 °C min -¹) and large particle size of 3–5 μm (micron) of YSZ has hindered the formation of fully dense cathode layer resulting from higher co-sintering temperature. Correspondingly, with only 0.1116 Ωcm2 value of area-specific resistance (ASR), a maximum power density has increased from 0.34 W cm ² to 0.75 W cm ² with 1.05 V OCV at 700 °C when the co-sintering temperature ranging from 1400 °C to 1450 °C; which comparable with single-layer counterpart.

Item Type:	Article
Uncontrolled Keywords:	MT-SOFC; Co-extrusion/co-sintering; Simplified technique; Boundary-less structure
Subjects:	T Technology > TP Chemical technology
Divisions:	Faculty of Mechanical and Manufacturing Engineering > Department of Manufacturing Engineering
Depositing User:	Mr. Shahrul Ahmad Bakri
Date Deposited:	28 Feb 2022 06:57
Last Modified:	28 Feb 2022 06:57
URI:	http://eprints.uthm.edu.my/id/eprint/6538

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