期刊
JOURNAL OF POWER SOURCES
卷 267, 期 -, 页码 188-196出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jpowsour.2014.05.084
关键词
Nickel aluminum-layered double hydroxide; Hollow carbon nanofibers; Supercapacitors; Electrochemical performance
资金
- National Natural Science Foundation of China [21071153]
- Key Project of Hunan Provincial Science and Technology Plan of China [2014FJ2007]
This paper introduces a new design route to fabricate nickel aluminum-layered double hydroxide (NiAl-LDH) nanosheets/hollow carbon nanofibers (CNFs) composite through an in situ growth method. The NiAl-LDH thin layers which grow on hollow carbon nanofibers have an average thickness of 13.6 nm. The galvanostatic charge-discharge test of the NiAl-LDH/CNFs composite yields an impressive specific capacitance of 1613 F g(-1) at 1 A g(-1) in 6 M KOH solution, the composite shows a remarkable specific capacitance of 1110 F g(-1) even at a high current density of 10 A g(-1). Furthermore, the composite remains a specific capacitance of 1406 F g(-1) after 1000 cycles at 2 A g(-1), indicating the composite has excellent high-current capacitive behavior and good cycle stability in compared to pristine NiAl-LDH. (C) 2014 Elsevier B.V. All rights reserved.
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