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Chemical Research in Chinese Universities ›› 2012, Vol. 28 ›› Issue (5): 874-877 .

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Manganese Dioxide with High Specific Surface Area for Alkaline Battery

HUANG You-ju1, LIN Yu-li1, LI Wei-shan1,2,3   

  1. 1. School of Chemistry and Environment, South China Normal University, Guangzhou 510006, P. R. China;
    2. Key Laboratory of Electrochemical Technology on Energy Storage and Power Generation of Guangdong Higher Education Institutes, South China Normal University, Guangzhou 510006, P. R. China;
    3. Engineering Research Center of Materials and Technology for Electrochemical Energy Storage, Ministry of Education, South China Normal University, Guangzhou 510006, P. R. China
  • Received:2011-12-29 Revised:2012-02-09 Online:2012-09-25 Published:2012-09-07
  • Supported by:
    Supported by the National Natural Science Foundation of China(No.20873046), the Specialized Research Fund for the Doctoral Program of Higher Education of China(No.200805740004), the Natural Science Foundation of Guangdong Province, China(No.10351063101000001) and the Fund of Guangdong Province Cooperation of Producing, Studying and Researching, China (No.2011B090400317).

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Abstract: The authors reported a facile method for the synthesis of manganese dioxide without any template and catalyst at a low-temperature. The prepared sample was characterized with X-ray diffraction(XRD), scanning electron microscopy(SEM), Brunauer-Emmett-Teller(BET) surface analysis, Fourier transform infrared(FTIR) spectrometry, cyclic voltammetry, alternative current(AC) impedance test and battery discharge test. It is found that the prepared sample belongs to α-MnO2 and has a microsphere morphology and a large BET surface area. The electrochemical characterization indicates that the prepared sample displays a larger electrochemical capacitance than the commercial electrolytic manganese dioxides(EMD) in Na2SO4 solution, and exhibits larger discharge capacity than EMD, especially at a high rate discharge condition when it is used as cathode of alkaline Zn/MnO2 battery.

Key words: Manganese dioxide, Rate performance, Cathode material, Alkaline battery