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https://hdl.handle.net/10356/82697
Title: | Formation of hexagonal-molybdenum trioxide (h-MoO3) nanostructures and their pseudocapacitive behavior | Authors: | Kumar, Vipin Wang, Xu Lee, Pooi See |
Keywords: | Molybdenum oxide Electrochemical studies |
Issue Date: | 2015 | Source: | Kumar, V., Wang, X., & Lee, P. S. (2015). Formation of hexagonal-molybdenum trioxide (h-MoO3) nanostructures and their pseudocapacitive behavior. Nanoscale, 7(27), 11777-11786. | Series/Report no.: | Nanoscale | Abstract: | The crystallographic structure and morphology of redox active transition metal oxides have a pronounced effect on their electrochemical properties. In this work, h-MoO3 nanostructures with three distinct morphologies, i.e., pyramidal nanorod, prismatic nanorod and hexagonal nanoplate, were synthesized by a facile solvothermal method. The morphologies of h-MoO3 nanostructures were tailored by a controlled amount of hexamethylenetetramine. An enhanced specific capacitance about 230 F g−1 at an applied current density of 0.25 A g−1 was achieved in h-MoO3 pyramidal nanorods. Electrochemical studies confirmed that the h-MoO3 pyramidal nanorods exhibit superior charge-storage ability. This improved performance can be ascribed to the coexistence of its well exposed crystallographic planes with abundant active sites, i.e., hexagonal window (HW), trigonal cavity (TC) and four-coordinated square window (SW). The mechanism of charge-storage is likely facilitated by the vehicle mechanism of proton transportation due to the availability of the vehicles, i.e., NH4+ and H2O. The promising, distinct and unexploited features of h-MoO3 nanostructures reveal a strong candidate for pseudocapacitive electrode materials. | URI: | https://hdl.handle.net/10356/82697 http://hdl.handle.net/10220/40294 |
ISSN: | 2040-3364 | DOI: | 10.1039/C5NR01505G | Schools: | School of Materials Science & Engineering | Rights: | This article is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported Licence. | Fulltext Permission: | open | Fulltext Availability: | With Fulltext |
Appears in Collections: | MSE Journal Articles |
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Formation of hexagonal-molybdenum trioxide (h-MoO3) nanostructures and their pseudocapacitive behavior.pdf | 3.45 MB | Adobe PDF | View/Open |
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