• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>RSC Advances >Composite cathode material beta-LiVOPO4/LaPO4 with enhanced electrochemical properties for lithium ion batteries
【24h】

Composite cathode material beta-LiVOPO4/LaPO4 with enhanced electrochemical properties for lithium ion batteries

机译：锂离子电池电化学性能增强的复合正极材料β-LiVOPO4/ LaPO4

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

A composite cathode material, beta-LiVOPO4/LaPO4, is synthesized by a sol-gel method. The synthesized samples are characterized by XRD, SEM, TEM, EDS, XPS, and electrochemical tests. Results indicate that LiVOPO4 has an orthorhombic structure with a Pnma space group and that LaPO4 has a monazite structure with a P2(1) space group. EDS and TEM results illustrate that LaPO4 with typical sizes of 10-40 nm is homogeneously distributed on the surface of primary LiVOPO4 particles. The synthesized beta-LiVOPO4/LaPO4 exhibits much better electrochemical performance than bare beta-LiVOPO4. The beta-LiVOPO4/LaPO4 samples delivered an initial discharge capacity of about 127.0 mA h g(-1) at 0.1 C and possessed favorable capacities at rates of 0.5 and 1 C. Therefore, surface modification of crystalline LaPO4 is an effective way to improve the electrochemical performance of beta-LiVOPO4.
机译：通过溶胶-凝胶法合成了复合正极材料β-LiVOPO4/ LaPO4。合成的样品通过XRD，SEM，TEM，EDS，XPS和电化学测试进行表征。结果表明LiVOPO4具有Pnma空间群的正交结构，LaPO4具有P2（1）/ n空间群的独居结构。 EDS和TEM结果表明，典型尺寸为10-40 nm的LaPO4均匀分布在LiVOPO4初级颗粒的表面上。合成的β-LiVOPO4/ LaPO4的电化学性能比裸露的β-LiVOPO4更好。 β-LiVOPO4/ LaPO4样品在0.1 C时的初始放电容量约为127.0 mA hg（-1），并在0.5和1 C的速率下具有良好的容量。因此，结晶LaPO4的表面改性是改善结晶度的有效方法β-LiVOPO4的电化学性能。

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