Title

Composite Films Prepared by Immersion Deposition of Manganese Oxide in Carbon Nanotubes Grown on Graphite for Supercapacitors

Document Type

Article

Publication Date

11-2011

Publication Source

Journal of Materials Science

Abstract

Manganese oxide/carbon nanotube (CNT) composite films on graphite were prepared by growing CNTs on the substrate using chemical vapor deposition (CVD), followed by immersion in an aqueous solution of potassium permanganate. The CVD growth created favorable conditions for deposition of the oxide on the electrode, and an aligned porous structure of the composite films, which originated from the CNT growth, could be managed. Electrochemical behaviors of the CNT and the composite films for supercapacitors were studied in 1 M Na2SO4 solution. While the oxide deposition in the CNT films was identified as contributing to capacitance enhancement, it was also found that a mild heat treatment could improve performance of the composite films.

Inclusive pages

7328–7334

ISBN/ISSN

0022-2461

Publisher

Springer

Volume

46

Issue

7328

Peer Reviewed

yes