...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of electroceramics >Structure and electrochemical performance of LiFe_xNi_(1-x)O_2 (0.00≤x≤0.20) cathode materials for rechargeable lithium-ion batteries
【24h】

Structure and electrochemical performance of LiFe_xNi_(1-x)O_2 (0.00≤x≤0.20) cathode materials for rechargeable lithium-ion batteries

机译：锂离子充电电池LiFe_xNi_（1-x）O_2（0.00≤x≤0.20）正极材料的结构和电化学性能

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

LiFe_xNi_(1-x)O_2 (0.00≤x≤0.20) nanoparticles were synthesized by sol-gel method using aqueous solution of metal nitrate precursor at 600℃ for 10 h. Structure and physical properties were characterized by using X-ray diffraction (XRD), scanning electron microscopy (SEM), Transmission electron microscope (TEM) and X-ray photoelectron microscopy (XPS) analysis. XRD studies revealed a well defined layer structure and a linear variation of lattice parameters with the substitution of Fe confirms phase pure compounds in a rhombohedral structure for all the materials. The surface morphology and particle size changes brought about by the substitution of Fe in LiFe_(0.15)Ni_(0.85)O_2 using SEM and TEM analysis. Electrochemical properties of the as prepared LiFe_xNi_(1-x)O_2/Li/LiPF_6 in assembled cells were studied by charge/discharge, cyclic performance and different discharge rates. LiFe_(0.15)Ni_(0.85)O_2 shows better electrochemical properties than LiNiO_2 with the highest charge/discharge capacity (214/191 mAh/g) discharge rate of 0.5-C among LiFe_xNi_(1-x)O_2 (0.00≤x≤0.20). LiFe_(0.15)Ni_(0.85)O_2 was superior electrochemical properties, such as high charge/discharge capacity, high coulombic efficiency and low irreversible capacity.
机译：利用硝酸金属前体水溶液在600℃下溶胶-凝胶法合成了LiFe_xNi_（1-x）O_2（0.00≤x≤0.20）纳米粒子。通过使用X射线衍射（XRD），扫描电子显微镜（SEM），透射电子显微镜（TEM）和X射线光电子显微镜（XPS）分析来表征结构和物理性质。 XRD研究表明，层状结构定义明确，晶格参数随Fe的线性变化，证实了所有材料在菱面体结构中的相纯化合物。用SEM和TEM分析了LiFe_（0.15）Ni_（0.85）O_2中Fe的取代引起的表面形貌和粒径变化。通过充电/放电，循环性能和不同的放电速率研究了组装好的LiFe_xNi_（1-x）O_2 / Li / LiPF_6的电化学性能。 LiFe_xNi_（1-x）O_2（0.00≤x≤0.20）中，LiFe_（0.15）Ni_（0.85）O_2具有比LiNiO_2更好的电化学性能，其充放电容量（214/191 mAh / g）最高，放电速率为0.5-C。 ）。 LiFe_（0.15）Ni_（0.85）O_2具有优异的电化学性能，如高充放电容量，高库仑效率和低不可逆容量。

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