Synthesis and electrochemical properties of two types of highly ordered mesoporous MnO sub(2)

Mesoporous MnO sub(2) with uniform nanorod morphology and mesoporous beta -MnO sub(2) were prepared using SBA-15 and KIT-6 as the templates, respectively. XRD, nitrogen adsorption analysis, SEM, TEM and EDX techniques were used for the structural characterization. The electrochemical properties of t...

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Veröffentlicht in:Electrochimica acta 2010-02, Vol.55 (5), p.1682-1686
Hauptverfasser: Li, Lianxia, Hua, Ping, Tian, Xike, Yang, Chao, Pi, Zhenbang
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Sprache:eng
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Zusammenfassung:Mesoporous MnO sub(2) with uniform nanorod morphology and mesoporous beta -MnO sub(2) were prepared using SBA-15 and KIT-6 as the templates, respectively. XRD, nitrogen adsorption analysis, SEM, TEM and EDX techniques were used for the structural characterization. The electrochemical properties of the MnO sub(2) samples were studied using alkaline Zn/MnO sub(2) batteries in a 9 M KOH electrolyte solution. Compared to the commercial electrolytic manganese dioxide (EMD), the discharge capacity of the mesoporous MnO sub(2) nanorods increased by 74.98%, 119.74% and 146.19% at constant currents of 50, 250 and 500 mA g super(-1), respectively, while the discharge capacity of the mesoporous beta -MnO sub(2) increased by 63.58%, 95.14% and 100.23%.
ISSN:0013-4686
DOI:10.1016/j.electacta.2009.10.049