Two-dimensional transition metal carbides (MXenes) were recently emerged as promising electrode materials for energy storage applications. Herein, we report a high-capacity supercapacitor material based on nitrogen-doped delaminated titanium carbides (N-d-Ti3C2) synthesized through the facile ureaassisted delamination of large-scale Ti3C2 and carbonization of delaminated Ti3C2 (d-Ti3C2) mixed with urea. The two-dimensional N-d-Ti3C2 nanosheets exhibit a high specific capacitance of 266.5 Fg (1) at the scan rate of 5 mV s (1) in 6 M KOH electrolyte solution, with a high capacitance retention capability. This new type of nitrogen-doped delaminated titanium carbide could be a promising electrode material for high-performance supercapacitors. (C) 2016 Elsevier Ltd. All rights reserved.