Figure 4.

Charge-discharge curves of Co3O4 electrodes using AB and Super P as carbon conductors. At 0.1 C-rate, between 0.001 and 2.5 V, Co3O4 electrodes were prepared at (a) 150°C for 20 h, (b) 200°C for 6 h, (c) 250°C for 8 h with AB; and (d) 150°C for 20 h, (e) 200°C for 6 h, (f) 250°C for 8 h with Super P.

Shin et al. Nanoscale Research Letters 2012 7:73   doi:10.1186/1556-276X-7-73
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