Composite Electrodes for Electrochemical Supercapacitors
Supercapacitor
Nickel plaque
Manganese dioxide
Impregnation
Special Issue Article
Composite
02 engineering and technology
Condensed Matter Physics
7. Clean energy
01 natural sciences
Carbon nanotube
0104 chemical sciences
Materials Science(all)
TA401-492
0210 nano-technology
Materials of engineering and construction. Mechanics of materials
DOI:
10.1007/s11671-009-9518-0
Publication Date:
2010-01-06T11:28:56Z
AUTHORS (3)
ABSTRACT
Manganese dioxide nanofibers with length ranged from 0.1 to 1 μm and a diameter of about 4-6 nm were prepared by a chemical precipitation method. Composite electrodes for electrochemical supercapacitors were fabricated by impregnation of the manganese dioxide nanofibers and multiwalled carbon nanotubes (MWCNT) into porous Ni plaque current collectors. Obtained composite electrodes, containing 85% of manganese dioxide and 15 mass% of MWCNT, as a conductive additive, with total mass loading of 7-15 mg cm-2, showed a capacitive behavior in 0.5-M Na2SO4 solutions. The decrease in stirring time during precipitation of the nanofibers resulted in reduced agglomeration and higher specific capacitance (SC). The highest SC of 185 F g-1 was obtained at a scan rate of 2 mV s-1 for mass loading of 7 mg cm-2. The SC decreased with increasing scan rate and increasing electrode mass.
SUPPLEMENTAL MATERIAL
Coming soon ....
REFERENCES (20)
CITATIONS (29)
EXTERNAL LINKS
PlumX Metrics
RECOMMENDATIONS
FAIR ASSESSMENT
Coming soon ....
JUPYTER LAB
Coming soon ....