Journal
FUNCTIONAL MATERIALS LETTERS
Volume 9, Issue 6, Pages -Publisher
WORLD SCIENTIFIC PUBL CO PTE LTD
DOI: 10.1142/S1793604716420029
Keywords
Ni(OH)(2); NiO; carbon sphere; structure-activity; supercapacitor
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Funding
- National Natural Science Foundation of China [21576034]
- International S&T Cooperation Projects of Chongqing [CSTC2013gjhz90001]
- Fundamental Research Funds for the Central Universities [106112016CDJZR135506]
- State Education Ministry [106112016CDJZR135506]
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Herein, Ni(OH)(2) on carbon sphere nanostructure together with its derivatives, including NiO on carbon sphere, yolk-shell structure of NiO on carbon sphere and hollow NiO, were prepared with precise control and then applied as supercapacitors. Among them, NiO on carbon sphere exhibits a high specific capacitance (270.4 F g(-1) at 0.5A g (-1)), excellent rate performance (77.6% retention with 20-time current density increase) and good cycling stability (75.9% retention after 2000 cycles). The results indicate that carbon sphere plays a significant role in enhancing the electrical conductivity and electronic transportation process, ensuring the synergistic effects between carbon sphere and NiO shell.
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