Improved capacitance of nitrogen-doped delaminated two-dimensional titanium carbide by urea-assisted synthesis. (20th January 2017)

• Record Type: Journal Article
• Authors: Yang, Chenhui; Que, Wenxiu; Yin, Xingtian; Tian, Yapeng; Yang, Yawei; Que, Meidan
• Is Part Of: Electrochimica acta. Volume 225(2017)
• Page Start: 416
• Page End: 424
• Publication Date: 2017-01-20
• Subjects: Two-dimensional material -- MXene -- Delamination -- Nitrogen doping -- Capacitance; Electrochemistry -- Periodicals; Electrochemistry, Industrial -- Periodicals; 541.37
• DOI: 10.1016/j.electacta.2016.12.173
• Languages: English
• ISSNs: 0013-4686

Abstract

Abstract: 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-Ti3 C2 ) synthesized through the facile urea-assisted delamination of large-scale Ti3 C2 and carbonization of delaminated Ti3 C2 (d-Ti3 C2 ) mixed with urea. The two-dimensional N-d-Ti3 C2 nanosheets exhibit a high specific capacitance of 266.5 F g −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.