Hostname: page-component-586b7cd67f-g8jcs Total loading time: 0 Render date: 2024-11-24T12:28:29.909Z Has data issue: false hasContentIssue false
  • English
  • Français

Synthesis, Characterization and Pseudocapacitive Behaviour of MnOx/CNT Heterostructures

Published online by Cambridge University Press:  20 May 2013

Chung-Ying Tsai ,
Kanchan Mondal  and
S. Talapatra
Chung-Ying Tsai
Affiliation:
Department of Mechanical Engineering and Energy Processes, Southern Illinois University, Carbondale, IL\
Kanchan Mondal*
Affiliation:
Department of Mechanical Engineering and Energy Processes, Southern Illinois University, Carbondale, IL\
S. Talapatra
Affiliation:
Department of Physics, Southern Illinois University, Carbondale, IL
*
*corresponding author – [email protected]
Get access

Abstract

Manganese oxide based nanoparticles were synthesized by sol-gel process. Methanol, ethanol, and propanol were used as alternative solvent during sol-gel process with manganese acetate as precursor for the preparation of pristine manganese oxide. Hybrid MnOx modified by additions of carbon nanotubes was further prepared. Smallest particle size was observed for manganese oxide prepared from propanol, with diameters range from 16 nm to 50nm. XRD results showed that the as prepared manganese oxide based samples at calcination temperature of 300°C and above were composed of Mn2O3 as dominant phase, with Mn3O4 as minor phase. Specific capacitance measured from two electrode systems of manganese oxide prepared from methanol, ethanol, and propanol at scan rate of 10 mV/s were 88.3, 66.0, 104.8 F/g and the result for the hybrid sample was 140.5 F/g. The highest capacitance of the MnOx revealed a specific capacitance of 231.4 F/g when a 1:1 mixture of propanaol and methanol was employed as the solvent for the sol preparation. Results from electrochemical impedance spectroscopy (EIS) also showed superior electrochemical properties of the hybrid sample over pristine manganese oxide samples.

Keywords

energetic materialMnsol-gel
Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 1577: Symposium XX – Oxide Thin Films and Heterostructures for Advanced Information and Energy Technologies , 2013 , mrss13-1577-xx08-22
Copyright
Copyright © Materials Research Society 2013 

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

Kötz, R., Carlen, M., Electrochim. Acta, 45, 2483–2498 (2000).CrossRefGoogle Scholar
Conway, B. E., Kluwer-Plenum, New York (1999).Google Scholar
Arico, A. S., Bruce, P., Scrosati, B., Tarascon, J., and Schalwijk, W. V., Nature Materials, 4 (2005).CrossRefGoogle Scholar
Hu, C. C., Chen, W. C., Electrochim. Acta, 49, 3469–3477 (2004).CrossRefGoogle Scholar
Wang, S. Y., Ho, K. C., Kuo, S. L., Wu, N. L., J. Electrochem. Soc.,153, A75–A80 (2006).CrossRefGoogle Scholar