Figure 5 | Scientific Reports

Figure 5

From: Surface functionality and electrochemical investigations of a graphitic electrode as a candidate for alkaline energy conversion and storage devices

Figure 5

RRDE experiments with a BG disk response (b) pre-oxidized at 1.3V for 60 s in naturally aerated 0.5 M NaOH swept from −1 to 1.3 V at 5 mV.s−1 and rotated with 1600 rpm. The Pt ring potential was fixed at 0.29 V for HOO−detection (a). Dashed black and solid red lines denote first and second cycles, respectively. (c) is the calculated percentage of O2 reduction current proceeds via 4-e pathway % calculated on the bases of eq. (5, 6, 7, 8) using the data of (a,b).

Back to article page