| MnO_2/乙炔黑的超声化学制备与性能 |
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| 引用本文： | 文建国,阮湘元,周震涛. MnO_2/乙炔黑的超声化学制备与性能[J]. 电池, 2009, 39(5) |
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| 作者姓名： | 文建国 阮湘元 周震涛 |
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| 作者单位： | 文建国,阮湘元(东莞理工学院化学与环境工程学院,广东,东莞,523808);周震涛(华南理工大学材料科学与工程学院,广东,广州,510640) |
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| 摘 要： | 分别采用超声化学法和化学混合法制备了MnO2/乙炔黑复合电极材料.XRD结果显示:超声化学法制备的粉体呈α-MnO2结构,化学混合法制备的粉体为无定形结构.SEM和电化学实验结果表明:超声辐射可促使MnO2与导电剂颗粒均匀分散,并能改善电极材料的电化学动力学可逆性,当乙炔黑含量为15%时,可使复合电极的电化学比电容提高两倍.
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| 关 键 词： | 超声化学 乙炔黑 电化学电容器 复合材料 |
Sonochemistry preparation and performance of MnO_2/acetylene black |
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| WEN Jian-Guo,RUAN Xiang-yuan,ZHOU Zhen-tao. Sonochemistry preparation and performance of MnO_2/acetylene black[J]. Battery Bimonthly, 2009, 39(5) |
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| Authors: | WEN Jian-Guo RUAN Xiang-yuan ZHOU Zhen-tao |
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| Affiliation: | WEN Jian-Guo1,RUAN Xiang-yuan1,ZHOU Zhen-tao2(1.College of Chemistry , Environmental Engineering,Dongguan University of Technology,Dongguan,Guangdong 523808,China,2.College of Materials Science , Engineering,South China University of Technology,Guangzhou,Guangdong 510640,China) |
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| Abstract: | The composite electrode materials of MnO_2/acetylene black(AB) were prepared via sonochemistry method and chemical mixing method,respectively. XRD analysis showed that the powder prepared by sonochemistry method presented a structure of a-MnO_2,the powder prepared by chemical mixing method was an amorphous of MnO_2. The results of SEM and electrochemical experiment indicated that the ultrasonic radiation could make MnO_2 homogeneous dispersion with conductive agent,could improve electrochemical kinetics reversibility of the electrode material. The electrochemical specific capacitance of the composite electrode increased two times when AB content was 15%. |
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| Keywords: | MnO2 |
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