Initialization of a methane-fueled single-chamber solid-oxide fuel cell with NiO + SDC anode and BSCF + SDC cathode
MetadataShow full item record
The initialization of an anode-supported single-chamber solid-oxide fuel cell, with NiO + Sm0.2Ce0.8O1.9 anode and Ba0.5Sr0.5Co0.8Fe0.2O3-d + Sm0.2Ce0.8O1.9 cathode, was investigated. The initialization process had significant impact on the observed performance of the fuel cell. The in situ reduction of the anode by a methane-air mixture failed. Although pure methane did reduce the nickel oxide, it also resulted in severe carbon coking over the anode and serious distortion of the fuel cell. In situ initialization by hydrogen led to simultaneous reduction of both the anode and cathode; however, the cell still delivered a maximum power density of ~350 mW cm-2, attributed to the re-formation of the BSCF phase under the methane-air atmosphere at high temperatures. The ex situ reduction method appeared to be the most promising. The activated fuel cell showed a peak power density of ~570 mW cm-2 at a furnace temperature of 600 °C, with the main polarization resistance contributed from the electrolyte. © 2008 Elsevier B.V. All rights reserved.
Showing items related by title, author, creator and subject.
Carbon-tolerant Ni-based cermet anodes modified by proton conducting yttrium- and ytterbium-doped barium cerates for direct methane solid oxide fuel cellsLi, M.; Hua, B.; Luo, J.; Jiang, San Ping; Pu, J.; Chi, B.; Jian, L. (2015)© The Royal Society of Chemistry. Conventional Ni-based cermet anodes such as Ni-gadolinia doped ceria (Ni-GDC) suffer from low carbon deposition resistance in direct methane solid oxide fuel cells (SOFCs). Here we show ...
Stable direct-methane solid oxide fuel cells with calcium-oxide-modified nickel-based anodes operating at reduced temperaturesQu, J.; Wang, W.; Chen, Y.; Deng, X.; Shao, Zongping (2016)In this study, some basic oxide additives are introduced into the conventional Ni–Ce0.8Sm0.2O1.9 (SDC) cermet anodes of solid oxide fuel cells (SOFCs) for using methane as the fuel. The effects of incorporating basic ...
Single-chamber solid oxide fuel cells with nanocatalyst-modified anodes capable of in situ activationYang, G.; Su, Chao; Wang, W.; Ran, R.; Tade, Moses; Shao, Zongping (2014)Practical applications of single-chamber solid oxide fuel cells (SC-SOFCs) are partially limited by the difficulties and complications associated with the initialization process, which mainly involves the reduction of NiO ...