Composites formed by infiltration of 45 wt % La(0.8)Sr(0.2)Cr(0.5)Mn(0.5)O(3) (LSCM) into a 65% porous yttria-stabilized zirconia (YSZ) scaffold were investigated in order to understand the reasons this material is able to provide excellent anode performance in solid oxide fuel cells (SOFCs). Scanning electron microscopy showed that the LSCM forms ...
Alumina was added to doped ceria and its effect on the grain conductivity was studied. The electrical conductivities of Gd, Sm, or Y-doped ceria (CeO2) with or without alumina addition were measured as a function of temperature (250-700 degrees C) in air. Impedance measurement enabled the separation of the grain conductivity and the grain boundary ...
The electrolysis of CO2 has been examined in a solid oxide electrolyzer (SOE) using a ceramic electrode based on La0.8 Sr0.2 Cr0.5 Mn0.5 O3 (LSCM), infiltrated into a yttria-stabilized zirconia scaffold together with 0.5 wt % Pd supported on 5 wt % Ce0.48 Zr0.48 Y0.04 O2. An SOE with this electrode exhibited a total cell impedance of 0.36 cm2 at 10...
This work was supported by Samsung Electronics Co. Ltd. Partial support from Brain Korea 21 Program is also appreciated.
This work was supported by Samsung Electronics Co. Ltd. Partial support from Brain Korea 21 Program is also appreciated.
The properties of solid oxide fuel cell (SOFC) anode functional layers prepared by impregnation of 1 wt % Pd and 10 wt % ceria into porous scaffolds of either Y0.04 Ce0.48 Zr0.48 O2 (CZY) or composites of La0.3 Sr0.7 Ti O3 (LST) and yttria-stabilized zirconia (YSZ) were examined to determine whether these scaffold materials would have sufficient el...
The composition of Ba (Zr0.1Ce0.7Y 0.2)O3-?? (BZCY7) in the barium-zirconium-cerium- yttrium (BZCY), that is used as an electrolyte for low-temperature solid-oxide fuel cells (SOFCs) is presented. SOFCs are very important due to its potential long-term stability and economical competitiveness for many al including residential and automotive. BZCY7 ...
Microtubular solid oxide fuel cell systems have many desirable characteristics compared with their planar counterparts; however, there are many obstacles and difficulties that must be met to achieve a successful and economically viable manufacturing process and stack design. Anode-supported tubes provide an excellent platform for individual cells. ...
Yttria-stabilized zirconia (YSZ) thin films, 0.6-1.5 mu m, were deposited on Pt and sapphire substrates by a pulsed laser deposition (PLD) method. Their structural and transport properties have been studied by means of X-ray diffraction and electrical conductivity measurements. The in-plane and the perpendicular-to-plane conductivities (hereafter, ...
Micro-tubular solid oxide fuel cells (SOFC) systems have many desirable characteristics compared to their planar counter-parts, however there are many obstacles and difficulties that must be met to achieve a successful and economically viable manufacturing process and stack design. Anode supported tubes provide an excellent platform for individual ...
