Effect of Li2O additions upon the crystal structure, sinterability and electrical properties of yttria stabilized zirconia electrolyte

RSC Advances ◽  
2016 ◽  
Vol 6 (108) ◽  
pp. 106555-106562 ◽  
Author(s):  
Jie Xiong ◽  
Chengran Jiao ◽  
Minfang Han ◽  
Wentao Yi ◽  
Jie Ma ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Electrical Properties ◽  
High Conductivity ◽  
Yttria Stabilized Zirconia ◽  
Stabilized Zirconia ◽  
Zirconia Electrolyte

By adding 0.5 mol% Li2O, YSZ was densified at 1250 °C, and also had a high conductivity of 0.0313 S cm−1 at 800 °C.

Development of Zirconia Electrolyte Films on Porous Doped Lanthanum Manganite Cathodes by Electrophoretic Deposition

1999 ◽  
Vol 575 ◽  
Author(s):  
R. N. Basu ◽  
C. A. Randall ◽  
M. J. Mayo
Keyword(s):  
Solid Oxide Fuel Cells ◽  
Electrophoretic Deposition ◽  
Yttria Stabilized Zirconia ◽  
Lanthanum Manganite ◽  
Ceramic Powders ◽  
Stabilized Zirconia ◽  
Uniform Coating ◽  
Cathode Tube ◽  
Zirconia Film ◽  
Zirconia Electrolyte

ABSTRACTElectrophoretic deposition (EPD) was explored as an inexpensive route for fabricating the 8mol% yttria stabilized zirconia electrolyte in solid oxide fuel cells (SOFCs). Normally, deposition of particulate ceramic powders onto a sintered porous surface yields a non uniform coating which, after sintering, results in porosity, surface roughness and cracking in the coating. To overcome this problem, the present study used a fugitive graphite interlayer between the porous air electrode supported (AES) cathode tube (doped-LaMnO3) and the deposited zirconia film. By this approach, a fairly dense green coating (˜ 60%) was obtained, which yielded a smooth surface and pore-free microstructure after sintering. Preliminary results on the effect of a fugitive interlayer on the unfired (green) and fired zirconia coatings are discussed.

Mechanical properties of spark plasma sintered ceria reinforced 8 mol% yttria-stabilized zirconia electrolyte

2012 ◽  
Vol 1 (5) ◽  
pp. 306-315 ◽  
Author(s):  
Alka Gupta ◽  
Samir Sharma ◽  
Neelima Mahato ◽  
Amanda Simpson ◽  
Shobit Omar ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Yttria Stabilized Zirconia ◽  
Stabilized Zirconia ◽  
Spark Plasma ◽  
Zirconia Electrolyte

Synthesis and Properties of Composite Stabilized ZrO2

2013 ◽  
Vol 544 ◽  
pp. 68-71
Author(s):  
Jing Hui Cui ◽  
Tao Feng ◽  
Jin Feng Xia ◽  
Dan Yu Jiang ◽  
Ge Ming Liu ◽  
...  
Keyword(s):  
High Temperature ◽  
Sintering Temperature ◽  
Decomposition Temperature ◽  
Yttria Stabilized Zirconia ◽  
Stabilized Zirconia ◽  
Muffle Furnace ◽  
Flexure Strength ◽  
Different Temperatures ◽  
Zirconia Electrolyte

Through Mechanical grounding method, CaZrO3 – 8YSZ(8% in mol yttria stabilized zirconia) electrolyte samples with different amounts of CaZrO3 at 10wt%, 20wt%, 30wt% were sintered at different temperatures in Muffle furnace. The decomposition temperature of CaZrO3 is 825°C-900°C under one atmosphere. At high temperature, CaZrO3 decomposes into CaO and ZrO2. So Y2O3-CaO-ZrO2 complex is composed. The effects of the sintering temperature and the contents of the CaZrO3 on the conductivity, porosity, flexure strength, hardness were investigated. XRD and SEM were used to analyse the compositions and microcosmic morphology.

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