Title

Rapid hydrothermal synthesis of cobalt oxyhydroxide nanorods for supercapacitor applications

RIS ID

100795

Publication Details

Raj, C. Justin., Kim, B. Chul., Cho, W., Park, S., Jeong, H., Yoo, K. & Yu, K. (2015). Rapid hydrothermal synthesis of cobalt oxyhydroxide nanorods for supercapacitor applications. Journal of Electroanalytical Chemistry, 747 130-135.

Abstract

Cobalt oxyhydroxide (CoOOH) nanorods were synthesized by fast hydrothermal process for supercapacitor electrodes. The structural and morphological studies revealed the formation of CoOOH with hexagonal rhomb-centered crystal structure and excellent rod like morphology of approx. 5-10 nm diameter. The electrochemical characterization was performed for both half cell and symmetric full cell configuration using cyclic voltammetry, galvanostatic charge/discharge test and impedance spectroscopy in 3 M KOH aqueous electrolyte. The fabricated CoOOH electrodes showed maximum specific capacitance value of 198 F g−1 for a half cell and 94 F g−1 for a symmetric capacitor of 10 mg cm−2 active material per electrode and showed better energy and power densities. Moreover, the CoOOH electrode exhibits good capacitance retention (83%) after 5000 charge/discharge cycles.

Please refer to publisher version or contact your library.

Share

COinS
 

Link to publisher version (DOI)

http://dx.doi.org/10.1016/j.jelechem.2015.04.013