Journal
RSC ADVANCES
Volume 4, Issue 34, Pages 17884-17890Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c4ra00642a
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Funding
- National Natural Science Foundation of China [51362018, 21163010]
- Key Project of Chinese Ministry of Education [212183]
- Natural Science Funds for Distinguished Young Scholars of Gansu Province [1111RJDA012]
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An advanced binder-free electrode for high-performance supercapacitors has been designed by growing a three-dimensional (3D) NiO@CoMoO4 nanocomposite on Ni foam. Such a unique nanocomposite combined separately the advantages of the perfect cycling stability and rate capability of CoMoO4 and the high specific capacitance of NiO. Furthermore, the nanostructure of NiO@CoMoO4 could serve as an ion reservoir to store ions of the electrolyte, and give it a higher specific surface area and more active sites. As a result, this electrode exhibited remarkable specific capacitances 848 F g(-1) at a current density of 0.5 A g(-1)), perfect cycle stability 100% of cycle efficiency after 3000 cycles) and excellent electrochemical performance compared to single oxide electrodes. And this work also demonstrates the feasibility of rational design of advanced integrated nanocomposite electrodes for high-performance supercapacitors.
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