ISSN:
1662-9752
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
A resin paint dispersed with carbon particles was developed for the purpose of goodconductivity and corrosion resistance for metal separators used in Polymer Electrolyte Fuel Cells(PEFC). The use of metal separators, especially Ti separators is a technology which has receivedmuch attention for its practical application as it allows for much greater compact stacking, since it issuperior in both productivity and strength, in comparison with that of carbon molding separators.However, if pure Ti separators are used in a severe reaction of electricity generation, there is a[removed info]deterioration in conductivity, because of the formation of a passive film, which subsequently causeselectricity generation difficulties after a few hours of use. Through examining the type of resin usedfor the purpose of controlling the passive state, the grain size of the conductive filler (graphite (Gr)+ carbon black (CB)) and the composition combination for the purpose of secure conductivity, itwas found that the combination of a scaly graphite-furnaced black mixed powder with a medianparticle diameter of 4μm and VDF-10%HFP copolymer resin was optimal.As a result of performing a single cell electricity generation evaluation of the Ti separator, whichhad the above mentioned coating material, the life of 22,000 or more hours was confirmed and anelectricity generation evaluation is now being undertaken
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/02/14/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.534-536.1433.pdf
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