Abstract
In this study, titanium oxynitride sheets were obtained by nitration using hydroxo titanate with as prepared by hydrothermal method as the precursor under ammonia atmosphere at different temperature. Titanium oxynitride sheets would be used in supercapacitors due to its high conductivity, chemical stability and multi oxidation states. Among these sheets, N64 show excellent capacitance (5 mVs-1, 572.7 Fg-1). This is a cost-effective and simple preparation for a single-material supercapacitor, thereby eliminating the concern for a junction. The titanium oxynitride sheets, composed of mesoporous nanofibers with high porosity and multi-oxidation state of the center metal, exhibit both electric double-layer and pseudocapacitance significantly. These results demonstrate that this material can be a promising electrode material for supercapacitors for energy storage. In addition, a supercapacitor device of two electrodes system was successfully prepared by assembling two FSM of N64 which were sandwiched within PVA/H2SO4. It shown that N64 is a typical behavior of supercapacitor with large working window. This suggests that N64 may play a potential role in electrode material for further electrochemical applications.