One pot synthesis of ilmenite-type NiMnO_3-'nitrogen- doped' graphene nanocomposite as next generation supercapacitors

摘要

NiMnO_3-nitrogen doped graphene composite has been synthesized by a simple hydrothermal method and its supercapacitor performance investigated. The composite exhibits a specific capacitance of 750.2 F g~(-1) in 1 M Na_2SO_4 at a scan rate of 1 mV s~(-1). Nitrogen insertion inside the carbon lattice plays a crucial role in the enhancement of the overall specific capacitance and its long-term stability. This reproducible and superior performance of NiMnO_3-nitrogen doped graphene composite make it attractive as a candidate for energy storage materials.