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《Journal of Fudan University(Natural Science)》 2015-04
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Study on the Preparation and Electrochemical Performance of δ-MnO_2

YU Feng;ZHU Yangjun;LI Li;ZHANG Lei;WEN Zubiao;College of Chemistry and Chemical Engineer,Jiangxi Normal University;  
A layer-structured manganese dioxide was synthesized by the liquid oxidation-reduction method at room temperature,and charactericsed by using X-ray diffraction,thermogravimetric analysis,Fourier transform infrared spectroscopy,scanning electron microscope.the electrochemical performance has studied in 1 mol· L-1 LiOH and 1mol· L-1 KOH electrolyte.The results shows that δ-MnO2 at a scan rate of 1 mV·s-1 the specific capacitance can achievement 218F·g-1.Even the scan rate at 500mV·s-1,still showed significant oxidationreduction performance, which indicates that the δ-MnO2 has a high-current fast charge and discharge characteristics.
【Fund】: 国家自然科学基金(21463013);; 江西省自然科学基金(20142BAB203013)
【CateGory Index】: O614.711;O646
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