Question

which electrodes has high degree of contactivity
compared to amorphous carbon
​

Answer 1

Answer:

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 900C 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.

Answer 2

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