Electrochemical storage of hydrogen in nanocarbon materials: electrochemical characterization of carbon black matrices

In this work, various types of carbon black are electrochemically characterized to study their possible use in the electrochemical evaluation of fullerene materials as hydrogen storage candidates. The cyclic voltammetry and chronopotentiometry studies were performed in alkaline media, 6 M KOH, with carbon paste electrodes. Differences in the electrodes' electrochemical response and their correlation with the various surface chemistries, morphology and doping species of carbon blacks suggest a stronger dependency on the presence of doping agents (foreign metals) and on the surface structure than on the carbon black surface area. The study allows the selection of appropriate carbon black materials to be used as matrixes in future fullerene composite studies. Electronic Publication