期刊
CHEMELECTROCHEM
卷 2, 期 12, 页码 2020-2026出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/celc.201500310
关键词
electrochemistry; metal nitrides; nanofibers; supercapacitors; ternary
资金
- National Basic Research Program of China (973 Program) [2014CB239701]
- National Natural Science Foundation of China [21173120, 51372116]
- Natural Science Foundation of Jiangsu Province [BK2011030, BK20151468]
- Fundamental Research Funds for the Central Universities of NUAA [NP2014403]
- Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD)
- Fundation of Graduate Innovation Center in NUAA [kfjj20150611]
In this work, ternary metal nitrides are proposed as novel electrode materials for supercapacitors. We selectively fabricate ternary vanadium titanium nitride/carbon (VTiN/C) nanofibers through a facile electrospinning strategy and investigate their electrochemical performance for the first time. The obtained well-interconnected VTiN/C nanofibers with VTiN nanoparticles embedded into carbon ensure rapid electron/ion transfer and offer a highly ion-accessible surface. Appealingly, the VTiN-4/C nanofibers exhibit a greatly improved performance, with a high specific capacitance (430.7Fg(-1), 0.5Ag(-1)) and a good rate capability. Furthermore, the performance of the VTiN/C nanofibers is found to be controllable by adjusting the V/Ti atomic ratio. The encouraging electrochemical performance suggests that ternary VTiN could be a promising electrode material for supercapacitors.
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