Coordination environment engineering of graphene-supported single/dual-Pd-site catalysts improves the electrocatalytic ORR activity

Effect of calcium ion concentration on the ORR performance of Pd/C catalysts

“…In addition, MA and SA are important indicators for evaluating catalyst performance. The kinetic current density ( j k ), mass activity (MA) and specific activities (SA) can be calculated by the following equation:1/ j = 1/ j k + 1/ j d where j is the measured current density and j d is the measured limiting current.MA = j k /Pd load SA = MA/ECSA 15 …”

“…where j is the measured current density and j d is the measured limiting current. MA = j k /Pd load SA = MA/ECSA 15 As shown in Fig. 6(c) and (d), the MA of Pd/C 0.025 is 0.37 A mg −1 , which was 3.7 times higher than that of Pd/C 0.0125 (0.10 A mg −1 ).…”

Effects of Reduction Methods on the Performance of Shewanella oneidensis MR-1 Palladium/Carbon Catalyst for Oxygen Reduction Reaction

“…The kinetic current density ( j k ), mass activity (MA), and specific activity (SA) can be calculated by the following equation 1 / j = 1 / j k + 1 / j d where j is the measured current density and j d is the measured limiting current .25ex2ex M A = j k / normalP d normall normalo normalu normald S A = M A / E C S normalA …”

Novel palladium-based nanomaterials for multifunctional ORR/OER/HER electrocatalysis

“…47,48 Compared with single-atom catalysts, they could supply more active sites for reactants and intermediates, especially some necessary bridge adsorption. Xuewei Wang et al 49 engineered both a single-Pd-site catalyst and dual-Pd-site catalyst with different coordination environments, and compared the adsorption characteristics. Specically, researchers tried C, B, and N as coordination environments, and evaluated their inuences on the adsorption of the reactant (O 2 ) and intermediates.…”