| 影响脉冲电流法制备MnO2超级电容器电极性能的因素 |
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| 引用本文： | 马扬洲,徐友龙,肖芳,白海春.影响脉冲电流法制备MnO2超级电容器电极性能的因素[J].西安交通大学学报,2011,45(9):114-118. |
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| 作者姓名： | 马扬洲 徐友龙 肖芳 白海春 |
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| 作者单位： | 西安交通大学电子陶瓷与器件教育部重点实验室,710049,西安;西安交通大学国际电介质研究中心,710049,西安 |
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| 基金项目： | 国家“863计划”资助项目(2007AA03Z249) |
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| 摘 要： | 通过正交实验法研究了影响脉冲电流法合成MnO2超级电容器电极材料性能的影响因素,发现影响效果由大到小依次为:脉冲电流关断时间,醋酸锰水溶液浓度,脉冲电流密度,脉冲电流导通时间.在正交实验法得出的最优条件下,即醋酸锰浓度为0.5 mol/L,电流密度为250 A/m2,导通时间为0.01 s,关断时间为0.2 s,所制备的MnO2薄膜电极材料表面具有丰富的纳米球结构,在10 mV/s的扫描速率下,3 mol/L的KCl溶液作为电解液,比容量可以达到575 F/g,并且在2 000mV/s的快速充放电条件下,仍然能够保持良好的电容特性.
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| 关 键 词： | 超级电容器 二氧化锰 电极材料 脉冲电流 |
Influencing Factors on Manganese Dioxide Deposited with Pulse Current Method for Supercapacitors |
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| MA Yangzhou,XU Youlong,XIAO Fang,BAI Haichun.Influencing Factors on Manganese Dioxide Deposited with Pulse Current Method for Supercapacitors[J].Journal of Xi'an Jiaotong University,2011,45(9):114-118. |
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| Authors: | MA Yangzhou XU Youlong XIAO Fang BAI Haichun |
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| Institution: | 1,2(1.Electronic Materials Research Laboratory,Key Laboratory of the Ministry of Education, Xi′an Jiaotong University, Xi′an 710049,China;2.International Dielectric Materials Research Center,Xi′an Jiaotong University,Xi′an 710049,China) |
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| Abstract: | Manganese dioxide electrode with nanoball structure deposited by pulse current method has high specific capacitance and good charge-discharge characteristics.In this paper,an orthogonal experimental method was conducted to improve the capacitive characteristics of the manganese dioxide.The optimum condition is concluded as the concentration of Mn(Ac)2 of 0.5 mol/L,the current density of 250 A/m2,the on-time of 0.01 s and the off-time of 0.2 s.The obtained manganese dioxide exhibits the specific capacitance ... |
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| Keywords: | supercapacitor manganese dioxide electrode material pulse current |
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