Figure 3
From: All-graphene-battery: bridging the gap between supercapacitors and lithium ion batteries
Electrochemical performance of the functionalized graphene cathode and reduced graphene oxide anode in Li half-cells.
(a). Cycle stability of the functionalized graphene cathode (inset: charge/discharge profile) in the voltage window between 1.5 and 4.5 V. (b). Rate capability of the functionalized graphene cathode at different current rates from 0.1 to 8.0 A g−1. (c). Cycle stability of the reduced graphene oxide anode (inset: charge/discharge profile) in the voltage window between 0.01 and 3.0 V. (d). Rate capability of the reduced graphene oxide anode at different current rates from 0.1 to 8.0 A g−1. Cyclic voltammetry analysis for (e). the functionalized graphene cathode and (f). the reduced graphene oxide at a scan rate of 1.0 mV sec.−1 (inset: linear relationship between redox peak current and scan rates).
