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纳米棒状锰氧化物的制备及其电化学电容性能 被引量：6

Preparation and its electrochemical capacitance performance of manganic oxide nano-rod
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摘要 以水热法一步合成纳米棒状锰氧化物,考察热处理对锰氧化物结构和性能的影响.采用X射线衍射(XRD)和透射电子显微镜(TEM)对制备的锰氧化物的形貌和结构进行表征,采用循环伏安法、恒流充放电法和交流阻抗谱测定锰氧化物纳米棒作为电极材料的电化学性质.结果表明:制备的锰氧化物为隐钾锰矿型二氧化锰和单斜晶系的羟基氧化锰,具有纳米棒状结构,棒的长度1～2μm、直径100nm左右,表面均匀光滑;该锰氧化物做电化学电容器电极材料,具有较好的电化学电容性能,400℃热处理后,最高比电容为142F/g. Manganic oxide nano-rod was synthesized with hydrothermal method by one-step operation and the influence of heat-treatment on the structure and performance of the manganic oxide was examined. X- ray diffraction（XRD） and transmission electron microscopy（TEM） were used to characterize the morphol- ogy and structure of the manganic oxide. The electrochemical behavior of the manganic oxide nano-rod as an electrode material was tested by means of cyclic voltammetry（CV）, charge-discharge tests and electro- chemical impedance speetroscopy（EIS）, respectively. The result showed that, the as-prepared manganic oxide included cryptomelane-phase manganese dioxide and monoclinic MnOOH and present nano-rod mor- phology with length in the range of 1 μm to 2μm and diameter up to 200 nm. This electrode material ex- hibited good electrochemical capacitance performance. Through heat-treatment, the maximum specific capacitance was 142 F/g.
作者 冉奋 赵磊 张宣宣 吴宁 孔令斌 康龙
机构地区 兰州理工大学甘肃省有色金属新材料重点实验室
出处 《兰州理工大学学报》 CAS 北大核心 2013年第4期23-27,共5页 Journal of Lanzhou University of Technology
基金 国家自然科学基金(51203071,21163010)
关键词 锰氧化物 纳米棒 电化学电容器 manganic oxide nano-rod electrochemical capacitor
分类号 TB324 [一般工业技术—材料科学与工程] TQ316.3 [化学工程—高聚物工业]
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共引文献17

同被引文献30

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引证文献6

二级引证文献18

兰州理工大学学报
2013年 第4期

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