| 초록 |
Graphene has attracted world-wide attention due to its unique physico-chemical properties. These properties can further be tune by doping of heteroatoms (N,S,P and B). The incorporation of heteroatom introduces the defects in graphene lattice which is important for tuning the electrochemical performance. Till now, only mono-doped and co-doped rGO has been explored for supercapacitor application. Therefore, it is highly desirable to explore the supercapacitor application of tri-doped rGO which could not only provide more defective sites but also have synergistic effect between each dopant. Herein, we report for the first time single precursor mediated one-step synthesis of tri-doped (N,S and P) rGO under mild experimental conditions. The effect of pH has been systematically investigated by recording the change in amount of dopant(s), bonding configuration of heteroatoms, morphology, structure and electrochemical performance. The tri-doped (N,S and P) rGO synthesized under acidic pH conditions yielded crumpled and wrinkled morphology with the Cs value of 233 F/g at 100 mV/s, while under basic pH conditions it exhibited agglomerated structure with the Cs value of 96 F/g at 100 mV/s. |
