Core–Shell α‐Fe2O3@α‐MoO3 Nanorods as Lithium‐Ion Battery Anodes with Extremely High Capacity and Cyclability |
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Authors: | Qiang Wang Qi Wang De‐An Zhang Dr Jing Sun Dr Li‐Li Xing Prof Xin‐Yu Xue |
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Institution: | College of Sciences, Northeastern University, Shenyang 110004 (P.R. China), Tel: (+86)?24‐83687658 |
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Abstract: | α‐Fe2O3 nanoparticles are uniformly coated on the surface of α‐MoO3 nanorods through a two‐step hydrothermal synthesis method. As the anode of a lithium‐ion battery, α‐Fe2O3@α‐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 α‐Fe2O3@α‐MoO3 core–shell nanorods is 1481 mA h g?1 and a value of 1281 mA h g?1 is retained after 50 cycles, which is much higher than that retained by bare α‐MoO3 and α‐Fe2O3 and higher than traditional theoretical results. Such a good performance can be attributed to the synergistic effect between α‐Fe2O3 and α‐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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Keywords: | core– shell structures energy conversion hydrothermal synthesis lithium‐ion batteries nanostructures |
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