A Nanostructured Architecture for Reduced‐Temperature Solid Oxide Fuel Cells

Enhanced activities of nano-CeO2−δ@430L composites by zirconium doping for hydrogen electro-oxidation in solid oxide fuel cells

“…SEM examination of the resulting composites confirmed the formation of homogeneous and nanoporous coatings on the pore walls (Fig. 5b), as typically obtained by the impregnation technique [25,37]. As an example, a highmagnification view of pure ceria catalysts showed particle sizes of 14e19 nm (Fig.…”

A durable, high-performance hollow-nanofiber cathode for intermediate-temperature fuel cells

“…Accordingly, considerable efforts have been devoted to lowering SOFC operation temperature to <600 o C through new materials development and optimization of electrode/electrolyte microstructures [3][4][5][6][7]. However, lower operation temperature often leads to higher electrode polarization resistance, due mainly to sluggish oxygen reduction reaction (ORR) [8]. One of the most efficient ways to enhance the cathode ORR activity is to increase the active reaction sites or effective surface area [9].…”

Stainless steel-supported solid oxide fuel cell with La0.2Sr0.8Ti0.9Ni0.1O3−δ/yttria-stabilized zirconia composite anode

“…Inexpensive FSS is a promising candidate for both a bipolar [28,29] and a metallic scaffold material [16,30]. Thermal expansion coefficient of (10e12) Â 10 À6 K À1 , which is close to those of well-known electrolyte materials (e.g., YSZ and GDC) from room temperature to MS-SOFC operating temperatures [3,4].…”

“…STS particles are slightly larger than in the raw powder (34.6 ± 5.4 mm). At intermediate temperature (<650 C), FSS scaffolds have a high oxidation resistances as confirmed by negligible weight gains in air or humid H 2 [30,40].…”

“…Also, Ni coarsening during operation degrades cell performance [14]. Recently cells fabricated using this technique achieved PD~1000 mW cm À2 at 600 C; this high value is attributed to the presence of nano-hierarchical composites of impregnated anode (Ce 0.8 Sm 0.2 O 1.9 (SDC)/Ni) and cathode (SmBa 0.5 Sr 0.5 Co 2 O 5 (SBSCO)) into STS 430 back-bones; however, these cells have short stability [30]. Film deposition techniques using plasma spray [21,22] or aerosol deposition [52] of YSZ electrolyte obtained 220 PD 650 mW cm À2 at 700e800 C (Fig.…”