An improved method for the determination of the electrochemical active area of porous composite platinum electrodes

Effects of Nafion loading in anode catalyst inks on the miniature direct formic acid fuel cell

“…The catalyst oxidation portion of the CV is subtracted from the CO peak resulting in the charge passed only for CO oxidation. It is widely accepted that palladium can be characterized in this manner, where the surface area from the hydrogen peaks is determined from the relationship of 210 C cm −2 and from the CO peaks by the relationship of 420 C cm −2 [36][37][38][39][40][41].…”

Graphene supported platinum nanoparticles as anode electrocatalyst for direct borohydride fuel cell

“…The peaks in the potential range of À0.2 V to À0.15 V are attributed to the hydrogen adsorption and desorption processes, while those above 0.2 V are assigned to the oxidation of surface metal and the reduction of thus formed oxides. The hydrogen desorption area (Q H ) from À0.2 V to 0.2 V can be used to calculate the ECSA by employing the equation [39] ECSA  cm 2 =g of Pt à ¼ Q H ½mC=cm 2 210 ½mC=cm 2  electrode loading ½g of Pt=cm 2 (5) The ECSA of Pt/G nanocomposites is estimated to be 62.7 m 2 /g, while the ESCA of Pt/C nanoparticles is 39.5 m 2 /g. Obviously, the Pt/G nanocomposites have significantly larger ECSA than Pt/C nanoparticles.…”

Electrocatalytic characteristics of Pt–Ru–Co and Pt–Ru–Ni based on covalently cross-linked sulfonated poly(ether ether ketone)/heteropolyacids composite membranes for water electrolysis

“…The electrochemical active surface area (Pt-ESA) was calculated from the charge that passed (Q H = 210 mC cm À2 ) through a full monolayer of adsorbed hydrogen atoms and electrode loading using the CVs. The electrochemical active surface area of Pt was calculated using the CVs by a rough estimate [15].…”