Journal
ELECTROCHIMICA ACTA
Volume 222, Issue -, Pages 1761-1769Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2016.10.161
Keywords
Porous AAO; MnO2 nanorods; binder free; symmetric supercapacitor; DC sputtering; energy storage
Categories
Funding
- University Grant Commission, India [7412-32-044]
Ask authors/readers for more resources
Among numerous active electrode materials, manganese oxides are promising electrodes in super-capacitors. Manganese oxides research has thus far focused on the synthesis of one-dimensional (1-D) metal oxide nanostructured materials, which can have superior electrochemical performance. Several chemical methods are used to synthesize metal oxide nanostructured which involve toxic reagents, solvents and introduction of byproducts. However, physical method offers an eco-friendly path to develop contamination free 1-D metal oxide nanostructured materials. Here, we report the fabrication of binder free supercapacitor electrode of MnO2 nanorods on Nickel (Ni) coated porous anodic aluminum oxide (AAO) by DC magnetron sputtering for first time. Ni coated porous AAO substrate act as excellent current collector, enhancing the specific capacitance of MnO2 to 649 F/g. The binder free symmetric supercapacitor device delivered a high areal capacitance (112.6 mF/cm(2)), specific capacitance (194.23 Fg(-1)), good cyclic ability (89.83%) retention in capacitance after 5000 cycles), energy density (4.2 Whkg(-1)), and power density (1.4 kWkg(-1) at 0.718 Whkg(-1)). These outstanding electrochemical performances, suggest their tremendous potential as supercapacitor electrode in energy storage application. (C) 2016 Published by Elsevier Ltd.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available