Studies on Activated Carbon Capacitor Materials Loaded with Different Amounts of Ruthenium Oxide

Author(s)

Manikandan Ramani, University of South Carolina - Columbia
Bala Haran, University of South Carolina - Columbia
Ralph E. White, University of South Carolina - ColumbiaFollow
Branko Popov, University of South Carolina - ColumbiaFollow
Lj. Arsov, University Kiril and Metodij, Skopje, Macedonia

Document Type

Article

Abstract

Ruthenium oxide–carbon composites with different loadings of RuO₂ on carbon have been synthesized by an electroless deposition process. Increase in RuO₂ loading results in increasing the specific capacitance of the composite electrode. The effect of temperature treatment on the performance of these materials has been studied in detail. Maximum capacitance was observed after heat treatment at 100°C for all the composites. Increasing the oxidation temperature further converts the Ru oxides to crystalline form, which leads to poor capacitance values. A maximum capacitance of 260 F/g was obtained for 20 wt.% RuO₂loaded carbon treated at 100°C. The volumetric surface area of the composite remains constant with increased RuO₂ loading. Since Ru oxides have a large pseudocapacitance, this increases the volumetric capacitance of the carbon significantly.

Publication Info

Published in Journal of Power Sources, Volume 93, Issue 1-2, 2001, pages 209-214.

Rights

Copyright Elsevier, 2001.

Ramani, M., Haran, B. S., White, R. E., Popov, B. N. & Arsov, L. (1 February 2001). Studies on Activated Carbon Capacitor Materials Loaded with Different Amounts of Ruthenium Oxide. Journal of Power Sources, 93 (1-2), 209 – 214. http://dx.doi.org/10.1016/S0378-7753(00)00575-9