LSCM-YSZ nanocomposites for a high performance SOFC anode

Title
LSCM-YSZ nanocomposites for a high performance SOFC anode
Authors
정인영이대희이승오DonghaKim김주선현상훈문주호
Keywords
SOFC; Perovskite anode; Nanocomposite; Solid oxide fuel cells
Issue Date
2013-12
Publisher
Ceramics international
Citation
VOL 39, NO 8, 9753-9758
Abstract
La0.75Sr0.25Cr0.5Mn0.5O3−δ (LSCM) is a promising Ni-free anode material with reliable performance. LSCM retains excellent stability in both oxidizing and reducing environments at high operating temperatures, which makes it adoptable as solid oxide fuel cell (SOFC) anodes. However, the relatively inferior catalytic activity compared to Ni composite anodes limits the applicability in SOFC systems. Nanocomposite La0.75Sr0.25Cr0.5Mn0.5O3−δ–Y0.16Zr0.84O1.92 (LSCM–YSZ) anodes are investigated to improve the catalytic activity by effective dispersion of LSCM nanoparticles on stable YSZ backbones. LSCM–YSZ nanocomposite powders were synthesized via a polymerizable complex method. LSM–YSZ; yttria stabilized zirconia (YSZ); LSCM–YSZ unit cells were characterized by electrochemical impedance spectroscopy and a current interruption method. Compositional mapping analysis on the LSCM–YSZ nanocomposite anode demonstrates uniform dispersion of LSCM nanoparticles and phase connectivity between LSCM and YSZ, resulting in a lower electrode polarization resistance of 1.82 Ω ㎠ and greater peak power density of 177 mW cm−2 at 850 °C.
URI
http://pubs.kist.re.kr/handle/201004/45825
ISSN
02728842
Appears in Collections:
KIST Publication > Article
Files in This Item:
There are no files associated with this item.
Export
RIS (EndNote)
XLS (Excel)
XML


qrcode

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

BROWSE