Journal
APPLIED SURFACE SCIENCE
Volume 383, Issue -, Pages 57-63Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.apsusc.2016.04.173
Keywords
Niobium nitride; Nanobelt arrays; Hydrothermal reaction; Mesoporous; Supercapacitor
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Funding
- Natural Science Foundation of China [51504171, 51572100, 31500783]
- Project of Hubei Provincial Education Office [B2015346]
- Project of Natural Science Foundation of Hubei Province [2015CFA116]
- Outstanding Young and Middle-aged Scientific Innovation Team of Colleges and Universities of Hubei Province [T201402]
- Applied Basic Research Program of Wuhan City [2013011801010598]
- City University of Hong Kong Applied Research Grant (ARG) [9667085]
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Mesoporous niobium nitride nanobelt arrays (Nb4N5 NBA(5)) are fabricated directly on Nb foils by a hydrothermal reaction in KOH, protonation treatment in HNO3, and calcination in an NH3 ambient. The morphology, composition and pore structure of the Nb4N5 NBA(5) are characterized in details. In addition, the mesoporous Nb4N5 NBA(5) electrode has good specific capacitance (37.4 mF cm(-2), or 124 F g(-1)) and delivers excellent rate performance due to the high porosity and good electron conductivity boding well for application to next-generation energy storage systems. (C) 2016 Elsevier B.V. All rights reserved.
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