Hierarchical 1T-MoS2 nanotubular structures for enhanced supercapacitive performance. Issue 45 (7th November 2017)

• Record Type: Journal Article
• Authors: Yang, Shuang; Zhang, Ke; Wang, Changda; Zhang, Youkui; Chen, Shuangming; Wu, Chuanqiang; Vasileff, Anthony; Qiao, Shi-Zhang; Song, Li
• Is Part Of: Journal of materials chemistry. Volume 5:Issue 45(2017)
• Page Start: 23704
• Page End: 23711
• Publication Date: 2017-11-07
• Subjects: Materials -- Research -- Periodicals; Chemistry, Analytic -- Periodicals; Environmental sciences -- Research -- Periodicals; 543.0284
• DOI: 10.1039/c7ta08115d
• Languages: English
• ISSNs: 2050-7488

Abstract

Abstract : Layered transition metal disulfides are currently being widely studied for advanced energy generation and storage applications. Abstract : Layered transition metal disulfides are currently being widely studied for advanced energy generation and storage applications. Here we report a facile template-assisted solvothermal strategy to obtain a hierarchical nanotubular structure consisting of ultrathin MoS2 nanosheets with a metallic 1T phase. Synchrotron radiation based X-ray absorption fine structure (XAFS) and X-ray photoelectron spectroscopy (XPS) are used to investigate the structure and electronic properties of the 1T-MoS2, which are largely different from annealed samples. Its hierarchical structure makes the obtained nanotubular 1T-MoS2 an excellent electrode material for supercapacitors, with a high specific capacitance of 328.547 F g −1 at a current density of 1 A g −1 and 243.66 F g −1 at a current density of 15 A g −1 . Moreover, the material displays excellent capacitance retention, retaining 98.4% capacity after 5000 cycles at a current density of 3 A g −1 . Notably, a high specific capacitance of 250 F g −1 at 1 A g −1 is also achieved in a two-electrode symmetrical cell, suggesting its great potential for new-generation supercapacitors.