首页|Construction of vertically aligned Ni-Co-Mo hybrid oxides nanosheet array for high-performance hybrid supercapacitors
Construction of vertically aligned Ni-Co-Mo hybrid oxides nanosheet array for high-performance hybrid supercapacitors
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NSTL
Elsevier
Multi-metal oxide materials have gained increasing attention due to their superior electrochemical performance for supercapacitors. In this work, Ni-Co-Mo oxides composite materials (NiCoMo/NF) are synthesized and anchored on Ni foam in the form of vertically aligned nanosheet arrays using a two-step hydrothermal method. It has confirmed that good electrochemical performance stems from a synergic interaction effect between the hybrid Ni-Co-Mo composite materials and the co-existence of Ni-Co and Co-Mo oxide, which can be attributed to a unique nanostructure in the hybrid Ni-Co-Mo composite materials and Ni-Co/Co-Mo oxide intersections with each other. The NiCoMo/NF binder-free electrode shows an enhanced specific capacitance of 1837.7 F g?1(3.31 F cm?2) at a current density of 1 A g?1 and maintains capacitance retention of 81.2% after 6000 cycles at 5 A g?1. Meanwhile, the fabricated hybrid capacitor achieves high specific energy of 41.1 W h kg?1. The results indicate that NiCoMo/NF has the potential for application in supercapacitors. Moreover, our work provides a practical approach for fabrication of multi-metal oxide materials and hold promise for high-power energy storage devices.
Guangxi Novel Battery Materials Research Center of Engineering Technology Center on Nanoenergy Research Guangxi Colleges and Universities Key Laboratory of Novel Energy Materials and Related Technology Guangxi Key Laboratory for Relativistic Astrophysics
NSTL
Elsevier
