Electrochemical properties of nanoporous carbon electrodes in various nonaqueous electrolytes

Adsorption kinetics of tetrabutylammonium cations on Bi() plane

“…The dependence of C dl on the electrode potential is in a good agreement with the Frumkin-Damaskin adsorption theory for neutral organic compounds at ideally polarizable electrodes [7,11,13]. C dl has minimal values in the region of zero charge potential (in the region of maximal adsorption) and increases quickly with desorption of the organic compound from the electrode surface with increasingly negative polarisation of the electrode.…”

“…at the ideally polarizable electrodes [7,11]. The C ad values increase very quickly with the decrease of ω at E ≤ -1.45 V as well as at E ≥ -0.65 V, where the value of ( µ θ E ∂ ∂ ) is high [70].…”

“…The value of the electrolyte resistance R el depends very slightly on the electrode potential (∆R el ≤ 4%) as well as on and this behaviour is characteristic of the ideally polarizable electrodes [2][3][4][5]7,[11][12][13]. in the region of maximal adsorption [39].…”

“…In the region of maximal adsorption, C s decreases with increasing c cat . In the region of adsorption-desorption (E peak ), C s rises with the increase of concentration of the adsorbate in the solution and there is a nearly linear dependence of C s on ω 1/2 in the region of moderate frequencies, characteristic of the mainly diffusion-limited process [1][2][3][4][5][6][7][8][11][12][13][14][15][16]. At E > E σ=0 , adsorption of the I -ions takes place at Bi( 1 01 ) like Hg, Au and polycrystalline Bi [30][31][32], but these data can not be used for the quantitative analysis, because the surface oxidation of the Bi( 1 01 ) plane is possible at E > -0.5 V (Ag|AgCl).…”

“…charging and discharging times) of the edl capacitors. The impedance studies of the nanoporous carbon | non-aqueous tetrabutylammonium salt systems show very complicated kinetic behaviour [6,7] and, for that reason, the results for nearly ideally flat electrode are inevitable for the better understanding of the mechanism of processes, occurring at the surface of the nanoporous carbon electrode.…”