Fig. 3: Electrocatalytic performance of catalysts: H2O2 production in O2-saturated alkaline and neutral electrolytes. | Nature Communications

Fig. 3: Electrocatalytic performance of catalysts: H2O2 production in O2-saturated alkaline and neutral electrolytes.

From: Electrochemically synthesized H2O2 at industrial-level current densities enabled by in situ fabricated few-layer boron nanosheets

Fig. 3

a–c Electrocatalytic measurements in an O2-saturated alkaline electrolyte (0.1 M KOH, pH = 13), ORR polarization curves (solid lines) with the corresponding H2O2 current on ring electrode (dashed lines) at 1.2 V vs. RHE at 1600 rpm without iR-compensation (the ring current had a collection efficiency of 0.37), the LSV curves were measured three times in Supplementary Fig. 17 (a), H2O2 selectivity (b), chronoamperometry stability test for 12 hours at 0.65 V vs. RHE (c). d–e Electrocatalytic measurements in an O2-saturated neutral electrolyte (0.1 M Na2SO4, pH = 7), ORR polarization curves (d), the LSV curves were measured three times in Supplementary Fig. 19. H2O2 selectivity (e), chronoamperometry stability test for 12 hours at 0.25 V vs. RHE (the line beak of ring current was due to the repeatedly electrochemical reduction of Pt ring) (f). g Tafel slopes in 0.1 M KOH. h ECSAs normalized against BET SSAs. i Radar plot comparing the 2e- ORR performance of Bn-C with many previously reported catalysts (Supplementary Table 2).

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