Coaxial structure of NiFe2O4/CNTs composites as anodes for enhanced lithium ion batteries
Coaxial structure of NiFe2O4/CNTs composites as anodes for enhanced lithium ion batteries
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NiFe2O4/CNTs复合材料的同轴结构作为增强型锂离子电池的阳极
DOI:
10.1016/j.jallcom.2019.153085
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发表时间:
2020-04
影响因子:
6.2
通讯作者:
Bo Long
中科院分区:
文献类型:
--
作者:
Youlan Zou;Zhaoyang Li;Yulin Liu;Jinliang Duan;Bo Long
Coaxial-structure NiFe2O4/CNTs composites are fabricated via self-assembly technique and a subsequent pyrolysis process. Porous structure and NiFe2O4nanoparticles are created by using metal-organic framework as sacrificial templates, and NiFe2O4with the particles size of 5 nm are uniformly distributed along the inside wall of CNTs to form coaxial structure. As an anode material for lithium ion batteries (LIBs), the porous NiFe2O4/CNTs electrode demonstrates a high reversible capacity of 624.6 mAh g−1after 100 cycles at the current density of 100 mA g−1. Even increased to 2000 mA g−1, it still remains the capacity of 250 mAh g−1after 100 cycles. This attractive electrochemical performance may be attributed to its robust coaxial structure, well-marked porosity and unhindered Li-ion transportation, rendering it a potential anode material for LIBs.
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