ISSN:
1573-4803
Source:
Springer Online Journal Archives 1860-2000
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
Abstract Using the techniques of image analysis, profilometry, gas permeability, mercury porosimetry, and gas adsorption, the morphological properties of porous electrode film (1 to 300 μm) materials are discussed. The materials include platinum paste which is utilized as electrodes for high-temperature oxygen-ion-conducting ZrO2 electrolytes and for low-temperature solid-state protonic electrolytes. Also considered are plasma-sprayed nickel layers and silver membranes. It is shown that each of the five methods can be used to make quantitative evaluations of film electrodes. The electrode morphological parameters measured include particle dimeter, pore diameter, porosity, three-phase line, thickness, surface texture, gas-flow/pressure, pore area, and surface area. A discussion of these properties as they relate to activation and concentration polarization of electrochemical cells is also presented.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF02385749
Permalink