Figure 4: Electrochemical analysis.
Electrochemical analysis of the pristine graphite, Pt/C and SbGnPs. (a) Capacity retention in an O2-saturated 0.1 M aq. KOH solution with a scan rate of 100 mV s−1, illustrating that SbGnPs displayed no capacity loss after 100,000 cycles; (b) Linear sweep voltammograms (LSVs) at a rotation rate of 2,500 r.p.m. and a scan rate of 10 mV s−1; (c) Koutecky–Levich plots derived from the rotating disk electrode measurements at −0.6 V; (d) The electron transfer number at −0.6 V (versus Ag/AgCl).
