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Abdullah Abdul Samat Abdul Azim Jais Mahendra Rao Somalu Nafisah Osman Andanastuti Muchtar Kean Long Lim 《Journal of Sol-Gel Science and Technology》2018,86(3):617-630
The electrical conductivity and electrochemical performance of a La0.6Sr0.4CoO3-δ (LSC) cathode produced by a modified citrate-EDTA sol-gel method assisted with activated carbon are characterized for a proton-conducting solid oxide fuel cell (H+??SOFC) application at intermediate temperature. Thermogravimetric analysis revealed that the decomposition of the unrequired intermediate compounds in the precalcined powder was completed at 800?°C. A single LSC perovskite phase was formed at a calcination temperature of 900?°C, as confirmed by X-ray diffraction analysis. The particle size, crystallite size, and BET-specific surface area of the powder are 219–221?nm, 18?nm, and 9.87?m2?g?1, respectively. The high index value of the extent of agglomeration (5.53) showed that the powder was barely agglomerated. Bulk LSC sintered at 1200?°C for 2?h showed the highest direct-current electrical conductivity (σd.c) compared to that of bulk LSC sintered at 1000?°C and 1100?°C. The value of σd.c was affected by the density and porosity of the sintered samples. The area specific resistance (ASR) of screen-printed LSC working on a proton conductor of BaCe0.54Zr0.36Y0.1O2.95 (BCZY) decreased from 5.0?Ω?cm2–0.06?Ω?cm2 as the temperature increased from 500?°C to 800?°C with an activation energy of 1.079?eV. Overall, in this work, the LSC material produced with the aid of activated carbon meet the requirements for the application as a cathode in an intermediate temperature H+-SOFC. 相似文献
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Azizi Masitah Abdul Halim Isahak Wan Nor Roslam Wan Masdar Mohd Shahbudin Somalu Mahendra Rao Yarmo Mohd Ambar 《Research on Chemical Intermediates》2018,44(11):6787-6802
Research on Chemical Intermediates - Hydrogen is considered a promising energy carrier for the future, especially for clean energy generation via fuel cell technologies. Formic acid is one of the... 相似文献
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Azreen Junaida Abd Aziz Nurul Akidah Baharuddin Mahendra Rao Somalu Andanastuti Muchtar 《Molecules (Basel, Switzerland)》2022,27(8)
Cathode thickness plays a major role in establishing an active area for an oxygen reduction reaction in energy converter devices, such as solid oxide fuel cells. In this work, we prepared SrFe0.9Ti0.1O3−δ–Ce0.8Sm0.2O1.9 composite cathodes with different layers (1×, 3×, 5×, 7×, and 9× layer). The microstructural and electrochemical performance of each cell was then explored through scanning electron microscopy and electrochemical impedance spectroscopy (EIS). EIS analysis showed that the area-specific resistance (ASR) decreased from 0.65 Ωcm2 to 0.12 Ωcm2 with the increase in the number of layers from a 1× to a 7×. However, the ASR started to slightly increase at the 9× layer to 2.95 Ωcm2 due to a higher loss of electrode polarization resulting from insufficient gas diffusion and transport. Therefore, increasing the number of cathode layers could increase the performance of the cathode by enlarging the active area for the reaction up to the threshold point. 相似文献
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Jais Abdul Azim Ali S. A. Muhammed Anwar Mustafa Somalu Mahendra Rao Muchtar Andanastuti Isahak Wan Nor Roslam Wan Baharudin Nurul Akidah Lim Kean Long Brandon Nigel P. 《Journal of Solid State Electrochemistry》2020,24(3):711-722
Journal of Solid State Electrochemistry - Nickel/scandia-ceria-stabilized-zirconia (Ni/10Sc1CeSZ) cermet is a potential anode for solid oxide fuel cells. The anode powder is prepared through a... 相似文献
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S. A. Muhammed Ali Anwar Mustafa Raduwan Nor Fatina Muchtar Andanastuti Somalu Mahendra Rao 《Journal of Sol-Gel Science and Technology》2018,86(2):493-504
Journal of Sol-Gel Science and Technology - La0.6Sr0.4Co0.2Fe0.8O3-δ (LSCF) is a perovskite-type oxide that exhibits excellent mixed ionic–electronic conducting properties and is a... 相似文献
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Muhammed Ali S. A. Anwar Mustafa Mahmud Lily Siong Kalib Noor Shieela Muchtar Andanastuti Somalu Mahendra Rao 《Journal of Solid State Electrochemistry》2019,23(4):1155-1164
Journal of Solid State Electrochemistry - The effect of current collecting layer (CCL) and cathode functional layer (CFL) thicknesses on the catalytic activity of the... 相似文献
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Muhammed Ali S. A. Anwar Mustafa Baharuddin Nurul Akidah Somalu Mahendra Rao Muchtar Andanastuti 《Journal of Solid State Electrochemistry》2018,22(1):263-273
Journal of Solid State Electrochemistry - The aim of this work was to investigate the effect of three key fabrication parameters (thickness, solid content, and sintering temperature) on the... 相似文献
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