3D Porous γ‐Fe2O3@C Nanocomposite as High‐Performance Anode Material of Na‐Ion Batteries |
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Authors: | Ning Zhang Xiaopeng Han Yongchang Liu Xiaofei Hu Qing Zhao Jun Chen |
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Affiliation: | Key Laboratory of Advanced Energy Materials, Chemistry (Ministry of Education), Collaborative Innovation Center of Chemical Science and Engineering, College of Chemistry, Nankai University, Tianjin, China |
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Abstract: | A simple and template‐free method for preparing three‐dimensional (3D) porous γ‐Fe2O3@C nanocomposite is reported using an aerosol spray pyrolysis technology. The nanocomposite contains inner‐connected nanochannels and γ‐Fe2O3 nanoparticles (5 nm) uniformly embedded in a porous carbon matrix. The size of γ‐Fe2O3 nanograins and carbon content can be controlled by the concentration of the precursor solution. The unique structure of the 3D porous γ‐Fe2O3@C nanocomposite offers a synergistic effect to alleviate stress, accommodate large volume change, prevent nanoparticles aggregation, and facilitate the transfer of electrons and electrolyte during prolonged cycling. Consequently, the nanocomposite shows high‐rate capability and long‐term cyclability when applied as an anode material for Na‐ion batteries (SIBs). Due to the simple one‐pot synthesis technique and high electrochemical performance, 3D porous γ‐Fe2O3@C nanocomposites have a great potential as anode materials for rechargeable SIBs. |
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Keywords: | 3D porous composites anodes iron oxides sodium‐ion batteries spray pyrolysis |
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