Figure 4 : Electrochemical characterizations.

From: Mesoporous NiO crystals with dominantly exposed {110} reactive facets for ultrafast lithium storage

Figure 4

(a) Discharge and charge profiles of mesoporous NiO crystals at 1 C current rates. (b) Cycling performance of mesoporous NiO crystals at 1 C current rates. The inset of (b) shows the Coulombic efficiency. (c) Discharge capacity vs. cycle number of mesoporous NiO crystals at high current rates of 10 C, 20 C, and 40 C. The inset shows discharge capacity in the initial 10 cycles. (d) The rate performance of mesoporous NiO crystals at varied current rates.