Preparation and Electrochemical Performance of Nanostructured MnO₂ Materials

Authors

Wen WU
Dan-Dan ZHOU
Meng-Yan HOU
Yong-Yao XIA

Corresponding Author

Yong-Yao XIA(yyxia@fudan.edu.cn)

Abstract

Nanostructured MnO₂ materials were prepared in a micro-emulsion medium using sodium dodecyl sulfate (SDS）as a surfactant by a redox reaction between potassium permanganate and aniline. The morphologies of the obtained MnO₂ were critically dependent on the concentrations of SDS. The particle sizes varied with the change in the micro-emulsion medium. The optimized properties of MnO₂ material obtained with the surfactant concentration of 0.2 mol.L^-1 had a specific surface area of 228.2 m².g^-1, and delivered a specific capacitance of 237 F.g ^-1 in 1 mol.L^-1 Li₂SO₄. Additionally, a reversible Li-ion intercalation reaction occurred in the MnO₂ calcined at 350 ^oC.

Graphical Abstract

Keywords

micro-emulsion method, pseudo-capacitance, nanostructured MnO2, intercalation reaction, surpercapacitor

DOI Link

https://doi.org/10.61558/2993-074X.2919

Publication Date

2012-08-28

Online Available Date

2012-02-29

Revised Date

2012-02-24

Received Date

2011-11-19

Recommended Citation

Wen WU, Dan-Dan ZHOU, Meng-Yan HOU, Yong-Yao XIA. Preparation and Electrochemical Performance of Nanostructured MnO₂ Materials[J]. Journal of Electrochemistry, 2012 , 18(4): Article 2.
DOI: 10.61558/2993-074X.2919
Available at: https://jelectrochem.xmu.edu.cn/journal/vol18/iss4/2