Abstract
Ce(0.8)Gd(0.05)Y(0.15)O(1.9)(GYDC) electrolyte was prepared by a carbonate co-precipitation method. Lithium nitrate at 1, 1.5, 2 and 3 mol% was added to GYDC as sintering additive. 96% relative density was achieved for GYDC at sintering temperature of 800 degrees C with addition of 1.5 mol% LiNO(3). The conductivities of GYDC with sintering aids LiNO3 were measured by a.c. impedance spectroscopy and showed comparable values to that of pure GYDC sample sintered at 1400 degrees C. A single cell with 1.5 mol% LiNO(3) infiltrated GYDC electrolyte was fabricated by sintering at 800 degrees C for only 2 h. Lithiated NiO was synthesized by the glycine-nitrate combustion method and employed as cathode material. The cell was tested at temperatures from 500 to 575 degrees C and a maximum power density of 73 mW cm(-2) was obtained at 575 degrees C. These preliminary results indicate that LiNO(3) is a very effective sintering additive for intermediate temperature solid oxide fuel cell fabrication.
Original language | English |
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Pages (from-to) | 47-51 |
Number of pages | 5 |
Journal | Solid State Ionics |
Volume | 203 |
Issue number | 1 |
DOIs | |
Publication status | Published - 16 Nov 2011 |
Keywords
- CE0.8GD0.2O2-DELTA
- solid oxide fuel cell
- ceramics
- aids
- cathode
- electrical-properties
- low temperature sintering
- one-step sintering
- grain-growth
- transport
- lithiated NiO
- BI2O3
- densification
- microstructural development
- temperature