fig5

Figure 5. (A) Capacities at various C-rates ranging obtained from the Se@RGO composite cathode^[39], Copyright 2015, Elsevier. (B) Cycling behaviors of NP-Se and CP-Se at a current density of 100 mA/g in the voltage range of 0.8-4.3 V^[40]. Copyright 2013, The Royal Society of Chemistry.