| 铜掺杂钴氧化物CuxCo3-xO4的制备及其电化学电容性能 |
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| 引用本文： | 梁鹏举,张亚军,张富海,张海英,杨玉英,张子瑜,胡中爱.铜掺杂钴氧化物CuxCo3-xO4的制备及其电化学电容性能[J].化工新型材料,2012,40(5):68-70,80. |
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| 作者姓名： | 梁鹏举 张亚军 张富海 张海英 杨玉英 张子瑜 胡中爱 |
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| 作者单位： | 西北师范大学化学化工学院,生态环境相关高分子材料教育部重点实验室,甘肃省高分子材料重点实验室,兰州730070 |
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| 基金项目： | 国家自然科学基金，甘肃省自然科学基金资助项目 |
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| 摘 要： | 采用X射线衍射(XRD)、场发射扫描电镜(FESEM)对铜掺杂钴氧化物(CuxCo3-xO4)纳米粒子样品的结构和形貌进行了表征;用循环伏安,恒流充放电,交流阻抗等电化学方法对其电化学性能进行了测试。结果表明:钴和铜的摩尔比对目标产物的电化学性能有显著的影响,当钴和铜的摩尔比为2.67∶0.33时,样品的电化学性能最佳。在电流密度为1A/g时,比电容达到492F/g,且在3A/g的电流密度下,经过2000次充放电循环后,其比电容值没有衰减,表明Cu0.33Co2.67O4是一种良好的超级电容器电极材料。
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| 关 键 词： | 超级电容器 化学共沉淀 铜掺杂钴氧化物(CuxCo3-xO4) |
Preparation and electrochemical performance of copper doping cobalt oxides CuxCO3-xO4 |
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| Liang Pengju
,
Zhang Yajun
,
Zhang Fuhai
,
Zhang Haiying
,
Yang Yuying
,
Zhang Ziyu
,
Hu Zhongai.Preparation and electrochemical performance of copper doping cobalt oxides CuxCO3-xO4[J].New Chemical Materials,2012,40(5):68-70,80. |
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| Authors: | Liang Pengju Zhang Yajun Zhang Fuhai Zhang Haiying Yang Yuying Zhang Ziyu Hu Zhongai |
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| Affiliation: | Liang Pengju Zhang Yajun Zhang Fuhai Zhang Haiying Yang Yuying Zhang Ziyu Hu Zhongai(Key Laboratory of Eco-Environment-Related Polymer Materials,Ministry of Education, Key Laboratory of Polymer Materials of Gansu Province,College of Chemistry and Chemical Engineering,Northwest Normal University,Lanzhou 730070) |
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| Abstract: | The Cu-doping cobalt oxide nanoparticles were successfully prepared by heating Cu-Co layered double hydroxides for 4 h at 200℃,which were obtained by a chemical co-precipitation method using Co(NO3)2·6H2O and Cu(NO3)2·3H2O as raw material and polyethylene glycol 6000 as structure-directing agent.The structure and morphology of obtained samples were characterized by X-ray diffraction(XRD) and field emission scanning electron microscopy(FESEM),respectively.The electrochemical performances were investigated by several electrochemical techniques such as cyclic voltammetry,galvanostatic charge-discharge and electrochemical impedance spectroscopy.It was found that molar ratio of Co2+ to Cu2+ had significant influence on electrochemical capacitive behaviors of the resultant products.Cu-doping cobalt oxides with optimal molar ratio up to 2.67:0.33(Co2+ to Cu2+) exhibited excellent specific capacitance(492F/g) at a current density of 1A/g. |
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| Keywords: | supercapacitor chemical coprecipitation copper doping cobalt oxide(CuxCo3-xO4) |
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