Voltammetric results of carbon and tin-carbon-based materials

The electrochemical performance of the materials was evaluated using cyclic voltammogram within a potential window ranging from -0.2 and 0.8 V at scan rates between 5 to 100 mV s −1, using a 0.5 mol L−1 H2SO4 aqueous solution, using a PGSTAT 302N Autolab potentiostatic/galvanostatic. A three-electrode configuration was used, with a rectangular platinum counter electrode and an Ag/AgCl reference electrode.