• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>RSC Advances >Surface modification of a LiNi0.5Mn1.5O4 cathode with lithium boron oxide glass for lithium-ion batteries
【24h】

Surface modification of a LiNi0.5Mn1.5O4 cathode with lithium boron oxide glass for lithium-ion batteries

机译：用锂离子电池用锂硼氧化物玻璃的LINI0.5MN1.5O4阴极的表面改性

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Lithium boron oxide glass (LBO-glass) coated LiNi0.5Mn1.5O4 cathode materials have been synthesized by a solution method to enhance the electrochemical performances. The structure and morphology of the as-prepared materials have been characterized by XRD, SEM, and TEM. The results indicate that the LiNi0.5Mn1.5O4 is coated with a layer of amorphous LBO-glass. The electrochemical properties are characterized by galvanostatic charge-discharge cycling, cyclic voltammetry, electrochemical impedance spectroscopy and a self-discharge test. Differential scanning calorimetry is carried out to confirm the improved safety by LBO-glass coating. The LBO coating can effectively enhance the electrochemical kinetics of the LiNi0.5Mn1.5O4 phase and improve the cycling performance. Among the as-prepared samples, the 1 wt% LBO-glass coated LiNi0.5Mn1.5O4 presents optimal electrochemical behaviors with a capacity retention of 91.4% after 100 cycles at 1 C and a discharge capacity of 105.8 mA h g(-1) at 10 C. Besides, the electrochemical impedance spectroscopy analysis shows the 1 wt% LBO-glass coating reduces the electrochemical impedance and improves the ability to conduct Li+ in the cells to a great extent.
机译：通过溶液方法合成硼氧化锂玻璃（LBO-玻璃）涂覆的LINI0.5MN1.5O4阴极材料以增强电化学性能。由XRD，SEM和TEM的特征在于制备的材料的结构和形态。结果表明，LINI0.5MN1.5O4涂覆有一层无定形LBO玻璃。电化学性质的特征在于通过Galvanostatic电荷 - 放电循环，循环伏安法，电化学阻抗光谱和自放电测试。进行差分扫描量热法以确认LBO玻璃涂层的改进安全性。 LBO涂层可有效增强LINI0.5MN1.5O4相的电化学动力学，提高循环性能。在制备的样品中，1wt％Lbo-玻璃涂覆的LINI0.5MN1.5O4呈现出最佳的电化学行为，在1℃下100次循环后的容量保持91.4％，放电容量为105.8 mA hg（-1）此外，电化学阻抗光谱分析显示1wt％Lbo玻璃涂料降低了电化学阻抗，并改善了在很大程度上在细胞中进行Li +的能力。

著录项

  • 来源
    《RSC Advances》 |2015年第71期|共7页
  • 作者

    Du Chenqiang; Yang Man; Liu Jie; Sun Shuting; Tang Zhiyuan; Qu Deyang; Zhang Xinhe;

  • 作者单位

    Tianjin Univ Sch Chem Engn &

    Technol Dept Appl Chem Tianjin 300072 Peoples R China;

    Tianjin Univ Sch Chem Engn &

    Technol Dept Appl Chem Tianjin 300072 Peoples R China;

    Tianjin Univ Sch Chem Engn &

    Technol Dept Appl Chem Tianjin 300072 Peoples R China;

    Tianjin Univ Sch Chem Engn &

    Technol Dept Appl Chem Tianjin 300072 Peoples R China;

    Tianjin Univ Sch Chem Engn &

    Technol Dept Appl Chem Tianjin 300072 Peoples R China;

    McNair Technol Co Ltd Dongguan 523700 Guangdong Peoples R China;

    McNair Technol Co Ltd Dongguan 523700 Guangdong Peoples R China;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 化学;
  • 关键词

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号