期刊
JOURNAL OF NANOPARTICLE RESEARCH
卷 20, 期 4, 页码 -出版社
SPRINGER
DOI: 10.1007/s11051-018-4201-y
关键词
Nanocables; Template method; Nickel oxide; Core-shell; Supercapacitors; Energy storage
资金
- National Natural Science Foundation of China [11204246]
- Chongqing Research Program of Basic Research and Frontier Technology [cstc2016jcyjA0125]
Ordered Ni/NiO nanocables were fabricated by electrochemical deposition with the aid of an anodic aluminum oxide as a template, followed by annealing at high temperature. Their morphology and structure are characterized, and the results show that each nanocable has a Ni nanowire as the inner core and a coarse NiO layer as an outer shell. As electrode materials for pseudo-capacitors, the ordered Ni/NiO nanocables exhibit a specific capacitance of 398 mF cm(-2) at 1 mA cm(-2) and good cycling stability. The good electrochemical performance can be attributed to the special core-shell nanocable architecture, in which the Ni nanowire core plays the role of the metallic interconnect as well as fast electron transfer, while the thin NiO shell with a large surface area serves as the active materials.
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