期刊
CHEMISTRY-AN ASIAN JOURNAL
卷 9, 期 11, 页码 3299-3306出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/asia.201402809
关键词
core-shell structures; energy conversion; hydrothermal synthesis; lithium-ion batteries; nanostructures
资金
- National Natural Science Foundation of China [51102041, 11104025]
- Fundamental Research Funds for the Central Universities [N120205001, N120405010]
- Program for New Century Excellent Talents in University [NCET-13-0112]
alpha-Fe2O3 nanoparticles are uniformly coated on the surface of alpha-MoO3 nanorods through a two-step hydrothermal synthesis method. As the anode of a lithium-ion battery, alpha-Fe2O3@alpha-MoO3 core-shell nanorods exhibit extremely high lithium-storage performance. At a rate of 0.1 C (10 h per half cycle), the reversible capacity of alpha-Fe2O3@alpha-MoO3 core-shell nanorods is 1481 mAhg-(1) and a value of 1281 mAhg(-1) is retained after 50 cycles, which is much higher than that retained by bare alpha-MoO3 and alpha-Fe2O3 and higher than traditional theoretical results. Such a good performance can be attributed to the synergistic effect between alpha-Fe2O3 and alpha-MoO3, the small size effect, one-dimensional nanostructures, short paths for lithium diffusion, and interface spaces. Our results reveal that core-shell nanocomposites have potential applications as high-performance lithium-ion batteries.
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