Effect of characteristics of (Sm,Ce)O2 powder on the fabrication and performance of anode-supported solid oxide fuel cells
MetadataShow full item record
NOTICE: this is the author’s version of a work that was accepted for publication in Materials Research Bulletin. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Materials Research Bulletin, Vol. 47, Issue 1, 2012. DOI: 10.1016/j.materresbull.2011.09.017.
Effect of characteristics of Sm0.2Ce0.8O1.9 (SDC) powder as a function of calcination temperature on the fabrication of dense and flat anode-supported SDC thin electrolyte cells has been studied. The results show that the calcination temperature has a significant effect on the particle size, degree of agglomeration, and sintering profiles of the SDC powder. The characteristics of SDC powders have a significant effect on the structure integrity and flatness of the SDC electrolyte film/anode substrate bilayer cells. The SDC electrolyte layer delaminates from the anode substrate for the SDC powder calcined at 600 °C and the bilayer cell concaves towards the SDC electrolyte layer for the SDC powder calcined at 800 °C. When the calcinations temperature increased to 1000 °C, strongly bonded SDC electrolyte film/anode substrate bilayer structures were achieved. An open-circuit voltage (OCV) of 0.82–0.84 V and maximum power density of ~1 W cm−2 were obtained at 600 °C using hydrogen as fuel and stationary air as the oxidant. The results indicate that the matching of the onset sintering temperature and maximum sintering rate temperature is most critical for the development of a dense and flat Ni/SDC supported SDC thin electrolyte cells for intermediate temperature solid oxide fuel cells.
Showing items related by title, author, creator and subject.
Comparative study of doped ceria thin-film electrolytes prepared by wet powder spraying with powder synthesized via two techniquesShi, H.; Zhou, W.; Ran, R.; Shao, Zongping (2010)Fabrication of dense Sm0.2Ce0.8O1.9 (SDC) thin-film electrolytes by wet powder spraying in combination with high-temperature sintering is investigated. Two powder synthesis techniques, i.e., a hydrothermal synthesis and ...
Fabrication and performance of a carbon dioxide-tolerant proton-conducting solid oxide fuel cells with a dual-layer electrolyteGuo, Y.; Ran, R.; Shao, Zongping (2010)A proton-conducting solid oxide fuel cells with a dual-layer electrolyte, constructed of a highly protonic conductive BaCe0.8Y 0.2O3-d (BCY) electrolyte and chemically stable BaZr0.4Ce0.4Y0.2O3-d (BZCY4) electrolyte, was ...
Synthesis and characterization of doped La9ASi6O26.5 (A = Ca, Sr, Ba) oxyapatite electrolyte by a water-based gel-casting routeZhang, L.; He, H.; Wu, Hongwei; Li, Chun-Zhu; Jiang, San Ping (2011)Alkaline elements doped lanthanum silicate oxyapatites, La9ASi6O26.5 (A ¼ Ca, Sr, Ba), are synthesized by a water-based gel-casting technique as electrolytes of solid oxide fuel cells (SOFCs). The phase formation, thermal ...