Journal
NANOTECHNOLOGY
Volume 30, Issue 46, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/1361-6528/ab3c99
Keywords
Fe3O4; carbon nanotube; carbon coating; anode material; lithium-ion batteries
Funding
- National Natural Science Foundation of China [21701174]
- NSF for Distinguished Young Scholars of Fujian Province [2017J07004]
- Science and Technology Planning Project of Fujian Province [2017J05096]
- Youth Innovation Promotion Association CAS
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In this work, we report a high-performance anode material created by rationally encapsulating multi-walled carbon nanotubes (MWNTs) within hollow Fe3O4 nanotubes followed by applying a carbon coating. When tested for lithium storage, as-prepared MWNT@hollow Fe3O4@C coaxial nanotubes present high specific capacity, superior rate performance, and outstanding cycling stability. It is capable of delivering high capacities of 758 mA h g(-1) at 500th cycle at 0.2 A g(-1), and 409 mA h g(-1) after 1000 cycles at a high rate of 1.5 A g(-1). This excellent performance can be attributed to its unique architecture, which provides high electrical conductivity, offers enough void space for volume accommodation, and mitigates the pulverization of Fe3O4 during cycles.
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