期刊
JOURNAL OF MATERIALS CHEMISTRY A
卷 5, 期 32, 页码 16712-16721出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c7ta04797e
关键词
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资金
- National Research Foundation of Korea (NRF) - Korean government (MSIP) [2017R1A2B4010157]
In the present work, we have synthesized zero-dimensional (0D) and three-dimensional (3D) iron oxide (alpha-Fe2O3) sub-micron particles using a one-pot hydrothermal approach. Morphological studies reveal that the as-synthesized spherical alpha-Fe2O3 (SFO) material consists of nanospheres with void spaces. The prepared SFO delivers a high specific surface area of 100.80 m(2) g(-1) and significantly increases the contact area between the electrode and the electrolyte. The initial galvanostatic specific capacity of the SFO materials was 1306 mA h g(-1) at a current density of 100 mA g(-1), which is superior to that of bare cubic alpha-Fe2O3 (CFO). Moreover, the mesoporous SFO shows a good cycling stability with a capacity retention rate of 91.4% after 100 cycles. These attractive results suggest that the mesoporous SFO shows a good electrochemical performance as a negative electrode material for high-performance Li-ion batteries.
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