Abstract：
:Metallic silver nickel oxide honeycomb nanoarrays were synthesized via a surfactant-assisted hydrothermal route. The crystal structure of the Ag/NiO nanoarrays was confirmed by X-ray diffraction. X-ray photoelectron spectroscopy confirmed the valance state of the nickel, oxygen, and metallic silver. The morphological studies and energy dispersive X-ray spectroscopy revealed the honeycomb structured nanoarrays and the elemental distribution of the prepared sample, respectively. The three-electrode measurements showed that the Ag/NiO nanoarray is a suitable electrode material for supercapacitor applications, which delivers the maximum specific capacity of 824 C g-1 at a specific current of 2.5 A g-1. An Ag/NiO positive electrode-based asymmetric device was fabricated and tested. The asymmetric device yielded a high specific cell capacity of 204 C g-1 at a specific current of 2.5 A g-1 as well as a maximum energy density of 63.75 W h kg-1 at a power density of 2812.5 W kg-1. These results are comparable to those of (NiMH) metal hydride batteries.
journal_name
Sci Repjournal_title
Scientific reportsauthors
Nagamuthu S,Ryu KSdoi
10.1038/s41598-019-41446-0subject
Has Abstractpub_date
2019-03-19 00:00:00pages
4864issue
1issn
2045-2322pii
10.1038/s41598-019-41446-0journal_volume
9pub_type
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