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Author Mugikura, Y. ♦ Selman, J. R.
Sponsorship USDOE
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword DIRECT ENERGY CONVERSION ♦ MATERIALS SCIENCE ♦ MOLTEN CARBONATE FUEL CELLS ♦ PERFORMANCE ♦ GOLD ♦ WETTABILITY ♦ NICKEL ♦ NICKEL OXIDES ♦ MOLTEN SALTS ♦ REDOX REACTIONS ♦ PORE STRUCTURE ♦ LITHIUM CARBONATES ♦ POTASSIUM CARBONATES
Abstract The wetting of metals and oxides by molten carbonate is an important factor affecting the performance of a molten carbonate fuel cell (MCFC). The distribution of the electrolyte among electrodes and matrix in the MCFC is dominated by the pore characteristics and wetting properties of these components. However, data on wetting, especially under load (current passage), are limited. In this study, the behavior of the meniscus at a metal is used to obtain information on wetting and electrochemical reactions. Meniscus height and current were measured under various atmospheres. The contact angle was calculated from the meniscus height. The electrolyte distribution in the MCFC was estimated using contact angles thus obtained in oxidant and reducing atmospheres. The results suggest that upon application of load the electrolyte moves from the anode to the cathode and that capillary effects can worsen the performance of a cell, especially if it is in an unbalanced state of electrolyte filling.
ISSN 00134651
Educational Use Research
Learning Resource Type Article
Publisher Date 1996-08-01
Publisher Place United States
Journal Journal of the Electrochemical Society
Volume Number 143
Issue Number 8


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