MnO2 Nanoparticles Embedded Polypyrrole Nanotubes for Supercapacitor Electrodes
This research article refers to the synthesis and characterization of MnO2 nanoparticles embedded on polypyrrole nanotubes. The product was synthesised by chemical oxidative polymerization method. Combination of MnO2 nanoparticles and polypyrrole nanotubes enhance the capability of the nanocomposite. The microstructures and properties of Polypyrrole nanotubes (PPy) and MnO2 embedded Polypyrrole nanotubes (PPy:MnO2) were determined by TEM and SEM. FT-IR spectra was recorded to determine the chemical structure of the products. XRD was used to determine the crystalline structure of the products. The PPy:MnO2 nanocomposite electrode shows substantial improvement in the redox performance compared to individual component PPy. The specific capacitance value of electrode material PPy:MnO2 was found to be ~200 F g−1 at 5 mV s−1.
KeywordsNanoparticles Nanotubes Chemical oxidative polymerization Specific capacitance Supercapacitors
Authors thank all the lab members and USIC staff of Delhi University. The financial support was provided by Department of Science and Technology (DST), Delhi, India through DST Women Scientist B, Project No. DST/Disha/SoRF-PM/029/2013/G, Dated: 8/07/15.
- 1.Conway BE (1999) Electrochemical capacitors: scientific fundamental and technological applications. Kluwer, Dordrecht, The NetherlandsGoogle Scholar
- 6.Wang Q, Wen Z, Li JA (2006) Hybrid supercapacitor fabricated with a carbon nanotube cathode and a TiO2-B nanowire anode. Adv Funct Mater 17:845–854Google Scholar
- 8.Sharma RK, Oh HS, Shul YG, Kim HS (2007) Carbon supported MnO2 nanorods for electrochemical supercapacitor. J Power Sources Short Commun 173:1024–1028Google Scholar