Multi-component carbon-based composites containing high crystallinity NiBDC as high-performance electrodes for supercapacitors

Abstract

Herein, we propose a strategy combining in situ sol–gel hydrothermal growth and annealing treatment for preparing multi-component carbon-based composites with high crystallinity of NiBDC (C-Ni/NiO/NiBDC). The C-Ni/NiO/NiBDC can be used by both positive and negative materials to build a supercapacitor that shows superior capacitance over the wide potential range of 0–1.8 V, resulting from the high crystallinity of NiBDC and synergistic effect of NiBDC, Ni and NiO, as well as their mutual intimate interfacial contact.