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    李兆萍, 王一平, 杨颖, 陈吉, 顾新云. 固相反应烧结制备锂离子电池正极材料LiFeBO3及其电化学性能[J]. 机械工程材料, 2014, 38(6): 16-19.
    引用本文: 李兆萍, 王一平, 杨颖, 陈吉, 顾新云. 固相反应烧结制备锂离子电池正极材料LiFeBO3及其电化学性能[J]. 机械工程材料, 2014, 38(6): 16-19.
    LI Zhao-ping, WANG Yi-ping, YANG Ying, CHEN Ji, GU Xin-yun. Preparation of LiFeBO3 Cathode Material for Lithium Rechargeable Batteries by Solid State Reaction Sintering and Its Electrochemical Property[J]. Materials and Mechanical Engineering, 2014, 38(6): 16-19.
    Citation: LI Zhao-ping, WANG Yi-ping, YANG Ying, CHEN Ji, GU Xin-yun. Preparation of LiFeBO3 Cathode Material for Lithium Rechargeable Batteries by Solid State Reaction Sintering and Its Electrochemical Property[J]. Materials and Mechanical Engineering, 2014, 38(6): 16-19.

    固相反应烧结制备锂离子电池正极材料LiFeBO3及其电化学性能

    Preparation of LiFeBO3 Cathode Material for Lithium Rechargeable Batteries by Solid State Reaction Sintering and Its Electrochemical Property

    • 摘要: 以氢氧化锂、草酸亚铁、硼酸为原料, 采用固相反应烧结法制备硼酸铁锂(LiFeBO3)正极材料; 并采用X射线衍射仪、扫描电镜以及电池测试仪等对其物相组成、微观形貌和电化学性能进行了研究。结果表明: 在750 ℃烧结的LiFeBO3结晶度最高、颗粒尺寸均匀、电化学性能最好; 在0.1C充放电倍率下此正极材料电池的首次放电容量可达154.6 mA·h·g-1, 而0.2C, 1C和3C倍率下其首次放电容量分别为118.3, 93.3, 51.8 mA·h·g-1; 经25次充放电循环后, 其放电容量保持在81 mA·h·g-1, 稳定性良好。

       

      Abstract: LiFeBO3 cathode material was synthesized by solid-state reaction using LiOH·H2O, H3BO3 and FeC2O4·2H2O as raw materials. Structure, morphology and electrochemical performance were investigated by means of X-ray diffraction (XRD), scanning electron microscopy (SEM) and electrochemical measurements. The results show that the LiFeBO3 material sintered at 750 ℃ had high crystallinity with uniform grain size distribution, and possessed optimal electrochemical performance. The initial discharge capacity of the battery with the cathode material was up to 154.6 mA·h·g-1 at change-dischange rate of 0.1C. When the rate were at 0.2C, 1C and 3C, the sample exhibited initial discharge capacities of 118.3, 93.3 and 51.8 mA·h·g-1, respectively; after 25 cycles, the discharge capacity maintained at 81 mA·h·g-1, indicating excellent stability in electrochemical properties.

       

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