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- W2077505965 abstract "In this work, the electrochemical processes occurring in a nanoporous carbon, obtained from silicon carbide and used as negative electrode material for supercapacitors, have been investigated by means of the single-particle microelectrode method. The processes studied deal with hydrogen adsorption, evolution, and oxidation using KOH as electrolyte. It was found that adsorption of hydrogen started at , hydrogen evolution at vs Hg∣HgO, and that hydrogen oxidation occurs in two steps. The first oxidation process takes place between 0 and , shown by a well-defined current peak on the voltammograms. The second oxidation stage occurs between 0.1 and , indicated by a successive increase in current with the number of cycles. It was also found that after the first oxidation process, subsequent cycling between and leads to a larger accumulation of hydrogen inside the nanopores and to a decrease of the effective diffusion coefficient of potassium ions. Subsequent oxidation, in a second process, leads to a total consumption of hydrogen and to an increase of ." @default.
- W2077505965 created "2016-06-24" @default.
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- W2077505965 date "2006-01-01" @default.
- W2077505965 modified "2023-10-18" @default.
- W2077505965 title "Characterization of the Electrochemical and Ion-Transport Properties of a Nanoporous Carbon at Negative Polarization by the Single-Particle Method" @default.
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- W2077505965 doi "https://doi.org/10.1149/1.2129670" @default.
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