| MoO3的水热法制备、表征及储锂性能 |
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| 引用本文： | 李叶华,吴贤文,陈上,戴春辉,于小林,王素亮,梁琦颖,赵深勇.MoO3的水热法制备、表征及储锂性能[J].人工晶体学报,2017,46(8):1619-1624. |
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| 作者姓名： | 李叶华 吴贤文 陈上 戴春辉 于小林 王素亮 梁琦颖 赵深勇 |
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| 作者单位： | 吉首大学化学化工学院,吉首,416000 |
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| 基金项目： | 湖南省教育厅优秀青年项目(15B190)，湖南省研究生科研创新项目(CX2017B710)，吉首大学研究生科研创新项目(Jdy16015) |
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| 摘 要： | 以钼酸钠和水杨酸钠为原料,通过水热法合成了MoO3.借助X射线衍射(XRD)、扫描电子显微镜(SEM)等对材料的结构和形貌进行表征,采用电化学工作站和充放电仪对电池的电化学性能进行测试.研究结果表明:在180 ℃下水热反应12 h制备得到六方相MoO3(h-MoO3)纳米块相较于在180 ℃下水热反应24 h制备得到正交相MoO3(α-MoO3)纳米片的电化学性能更佳.当h-MoO3 作为锂离子电池负极电极材料时,其首次放电比容量为2068.1 mAh/g.在电流密度为50 mA/g下循环50次后,其放电比容量仍然高达946.4 mAh/g,这归因于h-MoO3较小的电化学转移阻抗.
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| 关 键 词： | MoO3 水热法 锂离子电池 负极材料 |
Hydrothermal Preparation,Characterization and Its Lithium Storage Performance of MoO3 |
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| LI Ye-hua,WU Xian-wen,CHEN Shang,DAI Chun-hui,YU Xiao-lin,WANG Su-liang,LIANG Qi-ying,ZHAO Shen-yong.Hydrothermal Preparation,Characterization and Its Lithium Storage Performance of MoO3[J].Journal of Synthetic Crystals,2017,46(8):1619-1624. |
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| Authors: | LI Ye-hua WU Xian-wen CHEN Shang DAI Chun-hui YU Xiao-lin WANG Su-liang LIANG Qi-ying ZHAO Shen-yong |
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| Abstract: | MoO3 was synthesized by hydrothermal method using sodium molybdate and sodium salicylate as raw material.The structure and morphology of the materials were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and the electrochemical performances of MoO3 were conducted on an electrochemical workstation and a battery tester.The results show that the electrochemical properties of hexagonal MoO3 (h-MoO3) nanobocks prepared by hydrothermal treatment at 180 ℃ for 12 h are much better than the crossed MoO3 (α-MoO3) nanosheets synthesized by hydrothermal treatment at 180 ℃ for 24 h.When it is applied as anodes for lithium ion battery, the initial discharge capacity of h-MoO3 is 2068.1 mAh/g.After 50 cycles, its discharge capacity is 946.4 mAh/g at a current density of 50 mA/g.The outsanding electrochemical performance is attributed to the smaller electrochemical transfer impedance. |
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| Keywords: | MoO3 hydrothermal method lithium ion battery anode material |
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