...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics >Preparation and electrochemical studies of Li_3V_2(PO_4)_3/Cu composite cathode material for lithium ion batteries
【24h】

Preparation and electrochemical studies of Li_3V_2(PO_4)_3/Cu composite cathode material for lithium ion batteries

机译：锂离子电池Li_3V_2（PO_4）_3 / Cu复合正极材料的制备及电化学研究

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

Li_3V_2(PO_4)_3/Cu composite cathode material was prepared via sol-gel method by adding of 1.8 wt percent Cu powder into the precursor solution. The structural and physical properties, as well as the electrochemical performance of the material were compared with those of Cu-free Li_3V_2(PO_4)_3. X-ray diffraction showed that Cu did not enter the crystal structure of Li_3V_2(PO_4)_3. The Li_3V_2(PO_4)_3/Cu composite material had a higher electronic conductivity comparing with that of Cu-free Li_3V_2(PO_4)_3. Electrochemical impedance spectroscopy showed that the adding of Cu decreased the charge transfer resistance of the electrode. In addition, the lithium diffusion coefficient was prominently enhanced from 1.3 X 10~(-9) to 2.8 X 10~(-8) cm~2 s~(-1). Based on the these advantages, the Li_3V_2 (PO_4)_3 /Cu composite material exhibited much better cycling performance than the Cu-free Li_3V_2(PO_4)_3.
机译：Li_3V_2（PO_4）_3 / Cu复合正极材料是通过溶胶-凝胶法向前体溶液中添加1.8 wt％的铜粉而制备的。将材料的结构和物理性能以及电化学性能与无Cu Li_3V_2（PO_4）_3进行了比较。 X射线衍射表明，Cu没有进入Li_3V_2（PO_4）_3的晶体结构。与不含Cu的Li_3V_2（PO_4）_3相比，Li_3V_2（PO_4）_3 / Cu复合材料具有更高的电导率。电化学阻抗谱表明，Cu的加入降低了电极的电荷转移电阻。此外，锂的扩散系数从1.3 X 10〜（-9）显着提高到2.8 X 10〜（-8）cm〜2 s〜（-1）。基于这些优点，与不含Cu的Li_3V_2（PO_4）_3相比，Li_3V_2（PO_4）_3 / Cu复合材料具有更好的循环性能。

著录项

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