In:
Journal of the American Ceramic Society, Wiley, Vol. 101, No. 12 ( 2018-12), p. 5791-5800
Abstract:
Metal ion diffusion is an effective strategy to suppress the internal electronic short circuit in ceria‐based solid oxide fuel cells ( SOFC s). This could be achieved by fabricating an electron‐blocking layer between the barium‐containing anode and ceria‐based electrolyte. In this paper, a 0.6NiO‐0.4BaZr 0.1 Ce 0.7 Y 0.2 O 3‐δ (NiO‐ BZCY ) anode‐supported cell based on Gd 0.1 Ce 0.9 O 2‐δ ( GDC ) electrolyte was employed to evaluate the internal metal ion diffusion behavior. The high open circuit voltages of about 1 V obtained at 550‐700°C can be attributed to in situ formation of an electron‐blocking interlayer between NiO‐ BZCY and GDC . Microstructural analyses of the interlayer grains obtained by traditional solid‐state reaction were carried out. Phase identification demonstrated that the electron‐blocking interlayer had a perovskite structure. SEM and TEM analyses indicated formation of a new compound in the interlayer, of which the composition was determined as Zr, Y, and Ni co‐doped BaCe 0.9 Gd 0.1 O 3 with orthorhombic structure.
Type of Medium:
Online Resource
ISSN:
0002-7820
,
1551-2916
DOI:
10.1111/jace.2018.101.issue-12
Language:
English
Publisher:
Wiley
Publication Date:
2018
detail.hit.zdb_id:
2008170-4
detail.hit.zdb_id:
219232-9
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