Microstructural Characterization of Composite Electrode Materials in Solid Oxide Fuel Cells via Image Processing Analysis

Title
Microstructural Characterization of Composite Electrode Materials in Solid Oxide Fuel Cells via Image Processing Analysis
Authors
배승묵정화영이종호황진하
Keywords
Image analysis; SOFC; electrodes; microstructure; Solid oxide fuel cells
Issue Date
2010-01
Publisher
한국세라믹학회지; Journal of the Korean Ceramic Society
Citation
VOL 47, NO 1, 86-91
Abstract
Among various fuel cells, solid oxide fuel cells (SOFCs) offer the highest energy efficiency, when taking into account the thermal recycling of waste heat at high temperature. However, the highest efficiency and lowest pollution for a SOFC can be achieved through the sophisticated control of its constituent components such as electrodes, electrolytes, interconnects and sealing materials. The electrochemical conversion efficiency of a SOFC is particularly dependent upon the performance of its electrode materials. The electrode materials should meet highly stringent requirements to optimize cell performance. In particular, both mass and charge transport should easily occur simultaneously through the electrode structure. Matter transport or charge transport is critically related to the configuration and spatial disposition of the three constituent phases of a composite electrode, which are the ionic conducting phase, electronic conducting phase, and the pores. The current work places special emphasis on the quantification of this complex microstructure of composite electrodes. Digitized images are exploited in order to obtain the quantitative microstructural information, i.e., the size distributions and interconnectivities of each constituent component. This work reports regarding zirconia-based composite electrodes.
URI
http://pubs.kist.re.kr/handle/201004/37165
ISSN
1229-7801
Appears in Collections:
KIST Publication > Article
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