期刊
JOURNAL OF ALLOYS AND COMPOUNDS
卷 820, 期 -, 页码 -出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2019.153085
关键词
Bimetallic oxide; Self-assembly; Electrode materials; Electrochemical reactions; Lithium ion battery
资金
- Natural Science Foundation of China [11702234]
- Natural Science Foundation of Hunan province [2018JJ3488]
- Opening Project of Engineering Research Center of Nano-Geo Materials of Ministry of Education of China University of Geosciences [NGM2020KF009]
Coaxial-structure NiFe2O4/CNTs composites are fabricated via self-assembly technique and a subsequent pyrolysis process. Porous structure and NiFe2O4 nanoparticles are created by using metal-organic framework as sacrificial templates, and NiFe2O4 with 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(-1) after 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(-1) after 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. (C) 2019 Elsevier B.V. All rights reserved.
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