Preparation of Titanium nitride nanomaterials for electrode and application in energy storage

Abstract The Titanium nitride was made by the carbamide and titanic chloride precursors. XRD results indicate that the precursor ratio N:Ti 3:1 leads to higher crystallinity. SEM and EDX demonstrated that Ti and N elements were distributed uniformly with the ratio of 1:1. The TiN used as the electrode material for supercapacitor was also studied. The specific capacities were changed from 407 F.g −1 to 385 F.g −1 , 364 F.g −1 and 312 F.g −1 , when the current densities were changed from 1 A.g −1 to 2 A.g −1 , 5 A.g −1 and 10 A.g −1 , respectively. Chronopotentiometry tests showed high coulombic efficiency. Cycling performance of the TiN electrode was evaluated by CV at a scanning rate of 50 mV.s −1 for 20,000 cycles and there was about 9.8% loss. These results indicate that TiN is a promising electrode material for the supercapacitors.