Electrochemical dissolution of fresh and passivated chalcopyrite electrodes. Effect of pyrite on the reduction of Fe3+ ions and transport processes within the passive film
作者： O.G. Olvera , L. Quiroz , D.G. Dixon , E. Asselin
DOI: 10.1016/J.ELECTACTA.2014.01.165
关键词:
摘要: Abstract The effect of pyrite (FeS 2 ) on the electrochemical dissolution fresh and passivated chalcopyrite (CuFeS electrodes has been studied. Current density values for CuFeS were calculated from EIS measurements. FeS increased rate indicating that galvanic continued even after electrode was chemically passivated. decreased by a factor 3 passivation treatment. Due to low diffusion rates ions within passive film due an increase in resistance transfer electrons at electrode/film interface, activity reduction Fe 3+ also reduced 2.3 though not exposed any chemical results this work indicate controlled whereas film.
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