Fig. 5

CV profiles of MoS₂ nanosheets and nano-onion/MoS₂ nanosheet composites with ratios of 1:1, 1:2, 1:4, and 1:8. The potential ranges of first a, b, c and second row d, e, f were -0.8 to 0.2 V and -0.2 to 1.0 V, respectively. The scan rate of the left a, d, mid b, e and right c, f column was, respectively as 0.05, 0.1, or 0.5 V/s. NO, nano-onion