| 微/纳米结构MnO负极材料的制备与储锂性能 |
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| 引用本文： | 刘雅敏,赵秀芸,夏定国.微/纳米结构MnO负极材料的制备与储锂性能[J].电源技术,2012,36(5):639-642. |
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| 作者姓名： | 刘雅敏 赵秀芸 夏定国 |
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| 作者单位： | 1. 北京工业大学环境与能源工程学院,北京,100124
2. 北京大学工学院,北京,100871 |
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| 基金项目： | 国家自然科学基金重点项目，国家高技术发展计划"863"项目，北京市自然科学基金重大项目，北京工业大学第九届研究生科技基金 |
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| 摘 要： | 采用不同的方法制备出四种不同形貌的MnCO3作为前驱体,在H2/Ar混合气氛中热处理合成出规则的球形、立方体、哑铃体、椭球形四种不同形貌的MnO微/纳米材料。采用XRD、SEM、TG等方法对材料的结构和形貌进行表征。采用恒电流充放电方法比较了四种形貌的MnO材料用作锂离子电池负极材料时电化学性能。结果表明:0.1 C充放电时,球形和立方体形貌的MnO材料比容量较高,20次循环后保持在250 mAh/g以上。
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| 关 键 词： | MnO 微/纳米结构 负极材料 锂离子电池 |
Preparation and lithium-ion storage properties ofmicro/nano-structured MnO anode material |
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| LIU Ya-min
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ZHAO Xiu-yun
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XIA Ding-guo.Preparation and lithium-ion storage properties ofmicro/nano-structured MnO anode material[J].Chinese Journal of Power Sources,2012,36(5):639-642. |
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| Authors: | LIU Ya-min ZHAO Xiu-yun XIA Ding-guo |
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| Affiliation: | 1.College of Environmental and Energy Engineering,Beijing University of Technology,Beijing 100124,China; 2.College of Engineering,Peking University,Beijing 100871,China) |
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| Abstract: | The precursor MnCO3 with different morphology was synthesized by different ways.After annealing the precursor MnCO3 under H2/Ar,cubic,spherical,dumbbell-like and ellipsoidal MnO was obtained.The structure and morphology of the products were investigated by X-ray diffraction(XRD),scanning electron microscopy(SEM) and thermogravimetry(TG).The electrochemical performance of MnO with different shapes was tested by the galvanostatically charge and discharge method.The results show that cubic and spherical MnO exhibits higher reversible specific capacity when tested at 0.1 C,keeping 250 mAh/g after 20 cycles. |
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| Keywords: | MnO micro/nano-structure anode material lithium-ion battery |
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