Paper Title:
Surface Fractals and Wetting Properties of Porous Anodes Strengthened by Ni3Al for Molten Carbonate Fuel Cell
  Abstract

The contact angles of pure Ni, Ni/7wt%Ni3Al, Ni/5wt%Ni3Al/ 5wt%Cr and Ni/10wt%Cr anodes for the MCFC were measured by means of the capillary rise method in 62mol%Li2CO3+ 38mol%K2CO3 and 52mol%Li2CO3+ 48mol% Na2CO3 electrolyte and at different atmosphere. Also surface fractal dimension (Ds), which could characterize pore structure of the anodes, was calculated from experimental data obtained by mercury porosimetry and nitrogen adsorption method. The surface fractal dimensions of the anode were in range from 2.75 to 2.81, because porosities of the anodes for MCFC were controlled regularly to about 62% during sintering. It was investigated from wetting-in experiment by capillary-rise method that the contact angles between the anodes and the carbonate electrolytes were relatively decreased at CO2 atmosphere rather than air atmosphere and the angles were also decreased in the 62mol%Li2CO3+38mol%K2CO3 electrolyte rather than that measured and in the 52mol%Li2CO3+48mol% Na2CO3 electrolyte.

  Info
Periodical
Advanced Materials Research (Volumes 26-28)
Edited by
Young Won Chang, Nack J. Kim and Chong Soo Lee
Pages
861-864
DOI
10.4028/www.scientific.net/AMR.26-28.861
Citation
Y. S. Kim, K. H. Moon, J. H. Lim, "Surface Fractals and Wetting Properties of Porous Anodes Strengthened by Ni3Al for Molten Carbonate Fuel Cell", Advanced Materials Research, Vols. 26-28, pp. 861-864, 2007
Online since
October 2007
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$32.00
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