| 超级电容器电极材料MnS0.4O0.8的制备及其电容行为研究 |
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| 引用本文： | 周晓平,舒东. 超级电容器电极材料MnS0.4O0.8的制备及其电容行为研究[J]. 广州化工, 2010, 38(5): 163-165,178 |
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| 作者姓名： | 周晓平 舒东 |
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| 作者单位： | 湛江师范学院,化学科学与技术学院,广东,湛江,524048;华南师范大学,化学与环境学院,广东,广州,510006 |
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| 摘 要： | 采用液相共沉淀法制备了一种含Mn、S、O的无定型粉末材料,元素分析结果表明其组成为MnS0.4O0.8。采用XRD、SEM对其进行了物理表征。通过循环伏安和恒流充放电研究了其电容行为。结果表明:在1mol.L-1Na2SO4溶液中该材料具有良好的电容性能。当扫描速度为2mV.s-1时,其比电容为131F.g-1,经历500循环后其比电容还能保持初始值的94.8%,表现了良好的稳定性。恒流充放电实验结果表明材料的可逆性良好。此材料可作为电化学超级电容器的一种新的候选材料。
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| 关 键 词： | 超级电容器 电极材料 比电容 MnS0.4O0.8 |
Synthesis of MnS0.4O0.8 and its Capacitive Behavior |
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| ZHOU Xiao-ping,SHU Dong. Synthesis of MnS0.4O0.8 and its Capacitive Behavior[J]. GuangZhou Chemical Industry and Technology, 2010, 38(5): 163-165,178 |
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| Authors: | ZHOU Xiao-ping SHU Dong |
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| Affiliation: | 1 School of Chemical Science and Technology,Zhanjiang Normal College,Guangdong Zhanjiang 524048;2 School of Chemistry and Environment,South China Normal University,Guangdong Guangzhou 510006,China) |
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| Abstract: | Amorphous powder material（MnS0.4O0.8） was prepared by a chemical precipitation method and its electrochemical capacitance characterization was for the first time studied.The structure and surface morphology of the obtained powder were characterized by X-ray diffraction（XRD） and scanning electron microscopy（SEM）.The supercapacitive behavior was studied by means of cyclic voltammetry（CV）,and constant current charge-discharge cycling（CD）.A maximum specific capacitance of 131F·g-1 was obtained for this material.Furthermore,the specific capacitance remained 94.8% of the original value after 500 cycles.The results indicated that MnS0.4O0.8 maybe a promising electrode material for electrochemical supercapacitors. |
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| Keywords: | MnS0.4O0.8 |
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