 Tubular direct carbon solid oxide fuel cells with molten antimony anode and refueling feasibilityNan-Qi Duan, Yong Cao, Bin Hua, Bo Chi, Jian Pu, Jingli Luo and Li Jian Energy, 2016, vol. 95, issue C, 274-278 Abstract: Tubular direct carbon SOFCs (solid oxide fuel cells) supported by YSZ (Y2O3 stabilized ZrO2) electrolyte are fabricated by slurry-casting, slurry-dipping and sintering processes with La0.6Sr0.4Co0.2Fe0.8O3-10 mol.% Gd2O3 doped CeO2 (LSCF-10GDC) as the cathode. Their electrochemical performance is examined at temperatures from 700 to 800 °C using molten antimony (Sb) anode and activated carbon fuel. The ohmic resistance of the cell is between 1.01 and 0.37 Ω cm2 mainly originated from the thick YSZ electrolyte (150 μm); the polarization resistance ranges from 0.22 to 0.06 Ω cm2. The maximum power density at 800 °C is 304 mW cm−2 and can be greatly increased by using a thinner and/or more conductive electrolyte. With 1 g activated carbon as the fuel, the cell performance is stable at 200 mW cm−2 at 800 °C for more than 6 h by chemical consumption (oxidization) of the carbon, which reduces the electrochemically formed Sb2O3 to Sb. The cell performance decreases as the fuel is used up and is recovered by refueling. Keywords: Carbonaceous fuel; Tubular solid oxide fuel cell; Molten antimony anode; Electrochemical performance; Refueling (search for similar items in EconPapers) Downloads: (external link) Related works: Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:95:y:2016:i:c:p:274-278 DOI: 10.1016/j.energy.2015.10.033 Access Statistics for this article Energy is currently edited by Henrik Lund and Mark J. Kaiser More articles in Energy from Elsevier |
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