Electrode Properties of Tetrahedral Amorphous Carbon |
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| Authors: | Yu?E?Evstefeeva Email author" target="_blank">Yu?V?PleskovEmail author A?M?Kutsay I?Bello |
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| Institution: | (1) Frumkin Institute of Electrochemistry, Russian Academy of Sciences, Leninskii pr. 31, Moscow, 119071, Russia;(2) City University of Hong Kong, Hong Kong, Republic of China |
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| Abstract: | Impedance spectra in a 2.5 M H2SO4 solution and kinetic characteristics of reactions in the Fe(CN)
6
3−/4−
redox system are measured for thin-film electrodes of tetrahedral amorphous carbon (ta-C). After an anneal in a vacuum at 700 to 900°C or implantation of C+ ions (1015 to 1017 ion/cm2), ta-C films acquire electrochemical activity, which can be explained by an increased content of sp
2 carbon.__________Translated from Elektrokhimiya, Vol. 41, No. 7, 2005, pp. 866–871.Original Russian Text Copyright © 2005 by Evstefeeva, Pleskov, Kutsay, Bello. |
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| Keywords: | tetrahedral amorphous carbon thin-film electrode implantation with C+ ions differential capacitance electrochemical kinetics |
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