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EuVO4-V2O5复合物作为高性能锂离子电池电极材料
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作者单位:

1.昆明理工大学;2.西北有色金属研究院

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中图分类号:

TM911

基金项目:

科技部重点专项(2021YFE0104300)、云南省重点专项(202002AB080001)、稀贵金属综合利用新技术国家重点实验室开放课题(SKL-SPM-202023)


EuVO4-V2O5 composite as a high-performance electrode material of lithium-ion battery
Author:
Affiliation:

1.Kunming University of Science and Technology,Kunming;2.Northwest Institute for Nonferrous Metal Research,Xi’an

Fund Project:

Key Special Project of Ministry of Science and Technology (2021YFE0104300), Key Special Project of Yunnan Province (202002AB080001), Open Project of State Key Laboratory of New Technologies for Comprehensive Utilization of Rare and Precious Metals (SKL-SPM-202023)

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    摘要:

    本文采用水热法、阳离子交换法和煅烧处理,制备了相似于梅花结构的EuVO4-V2O5纳米线复合物。分别在300和500 oC温度条件煅烧制备的EuVO4-V2O5纳米线,实验发现随着温度不断增加,EuVO4-V2O5纳米线表面上的纳米颗粒发生了一定的团聚,当温度升高至500 oC时,纳米线出现了融化。通过实验测试比较发现,其中,300 oC煅烧制备的EuVO4-V2O5纳米线复合物的电化学储锂性能较好,在电流密度为30 mA g-1下经过50次循环后的放电比容量仍保持有376 mAh g-1,表现出良好的循环稳定性,且本文开发了一种新的稀土钒酸盐合成路径。

    Abstract:

    The EuVO4-V2O5 composite nanowire with plum blossom structure is prepared by hydrothermal method, cation-exchange and calci-nation method. The EuVO4-V2O5 nanowire electrode materials are calcined at 300 and 500 oC, respectively. The results show that as the temperature continued to increase, the nanoparticles on the surface of the EuVO4-V2O5 nanowires has a certain agglomeration. When the temperature increased to 500 oC, the nanowires melted. Among them, the EuVO4-V2O5 composite nanowire prepared by calcination at 300 oC has the best electrochemical performance, and the charge-discharge specific capacity remains 376 mAh g-1 after 50 cycles with a current density of 30 mA g-1, showing good cycle stability, and this article developed a new synthetic route of rare earth vanadate.

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引用本文

徐学留,方东,易健宏,李广忠. EuVO4-V2O5复合物作为高性能锂离子电池电极材料[J].稀有金属材料与工程,2022,51(4):1488~1496.[Xu Xue-Liu, Fang Dong, Yi Jian-Hong, Li Guang-Zhong. EuVO4-V2O5 composite as a high-performance electrode material of lithium-ion battery[J]. Rare Metal Materials and Engineering,2022,51(4):1488~1496.]
DOI:10.12442/j. issn.1002-185X.20210348

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历史
  • 收稿日期:2021-04-20
  • 最后修改日期:2021-06-29
  • 录用日期:2021-07-09
  • 在线发布日期: 2022-05-05
  • 出版日期: 2022-04-28