Journal
MATERIALS LETTERS
Volume 114, Issue -, Pages 40-43Publisher
ELSEVIER
DOI: 10.1016/j.matlet.2013.09.107
Keywords
Nickel oxide; Manganese dioxide; Nanocomposites; Pseudocapacitors; Energy storage and conversion
Funding
- National Natural Science Foundation of China [21171035, 51272299]
- Chinese Ministry of Education [313015]
- Shanghai Committee of Science and Technology [10JC1400100, 13JC1400300]
- Shanghai Municipal Education Commission [13ZZ053]
- Fundamental Research Funds for the Central Universities
- Program of Introducing Talents of Discipline to Universities [111-2-04]
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NiO/MnO2 core/shell nanocomposites have been fabricated by a facile hydrothermal method. The nanocomposites consist of NiO nanowires with the diameter of 70-80 nm which are coated by plenty of MnO2 nanosheets as secondary nanostructures. The NiO@MnO2 nanocomposites are used subsequently to construct a pseudocapacitor. Electrochemical tests reveal a high specific capacitance of 528.0 F g(-1) at a scan rate of 1 mV s(-1) and a good cycling stability of 109.9% after 5000 cycles, both of which are much higher compared to that of the pseudocapacitor based on pure NiO nanowires (307.0 F g(-1) and 87.8%, respectively). Therefore, these NiO/MnO2 nanocomposites have great superiority as electrode material in high-performance pseudocapacitors. (C) 2013 Elsevier B.V. All rights reserved.
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