Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
6471400 | Electrochimica Acta | 2017 | 8 Pages |
Abstract
Mn3O4/double-walled carbon nanotube nanocomposites for supercapacitor were successfully synthesized via a facile and low-cost chemical precipitation route, using potassium permanganate as precursor and hydrazine hydrate as reductant at room temperature. The nanocomposites were characterized by X-ray diffraction, transmission electron microscopy, scanning electron microscopy, X-ray photoelectron spectroscopy, Raman spectroscopy, Fourier Transform infrared spectroscopy and Brunauer-Emmett-Teller surface area measurements, respectively. The Mn3O4 nanoparticles were highly dispersed on the surface of double-walled carbon nanotubes. Cyclic voltammetry and galvanostatic charge/discharge technique were performed for the Mn3O4/double-walled carbon nanotube nanocomposites in 1 M Na2SO4 aqueous solutions; the specific capacitance of Mn3O4/double-walled carbon nanotube nanocomposites (26.58Â wt% Mn3O4) was about 1080Â Fgâ1 at the current density of 15Â Agâ1 with a long life time, owing to the high power density of Mn3O4 nanoparticles and the large surface area, excellent catalysis, good conductivity, and high stability of the double-walled carbon nanotubes.
Keywords
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Physical Sciences and Engineering
Chemical Engineering
Chemical Engineering (General)
Authors
Y.Z. Song, R.X. Zhao, K.K. Zhang, J.J. Ding, X.M. Lv, M. Chen, J.M. Xie,