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Na2Ti3O7/C Nanofibers for High‐Rate and Ultralong‐Life Anodes in Sodium‐Ion Batteries
ChemElectroChem ( IF 3.5 ) Pub Date : 2018-09-04 , DOI: 10.1002/celc.201800941 Su Nie 1 , Li Liu 1, 2 , Min Li 1 , Junfang Liu 1 , Jing Xia 1 , Yue Zhang 1 , Xianyou Wang 1
ChemElectroChem ( IF 3.5 ) Pub Date : 2018-09-04 , DOI: 10.1002/celc.201800941 Su Nie 1 , Li Liu 1, 2 , Min Li 1 , Junfang Liu 1 , Jing Xia 1 , Yue Zhang 1 , Xianyou Wang 1
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Na2Ti3O7/C nanofibers are successfully synthesized through an electrospinning process followed by hydrothermal treatment. The unique structure of these one‐dimensional nanofibers with two‐dimensional nanosheets on the surface is presumed to significantly shorten the diffusion routes for both electrons and ions. Meanwhile, the carbon matrix with a certain degree of graphitization can dramatically improve the overall conductivity. As a result, the Na2Ti3O7/C nanofiber electrode reveals an impressive electrochemical capability as the anode material of sodium‐ion batteries. It demonstrates a reversible capacity of 110 mA h g−1 after 500 cycles at a rate of 1 C. Moreover, with almost no capacity degradation, the discharge capacity of the Na2Ti3O7/C nanofiber electrode remains at 58 mA h g−1 after 1500 cycles at the high rate of 50 C. This superior electrochemical performance places the Na2Ti3O7/C nanofibers as an anode material with great promise for sodium‐ion batteries that could be applied in large‐scale energy storage.
中文翻译：
Na2Ti3O7 / C纳米纤维，用于钠离子电池中的高倍率和超长寿命阳极
Na 2 Ti 3 O 7 / C纳米纤维是通过电纺丝工艺和水热处理成功合成的。这些一维纳米纤维在表面上具有二维纳米片的独特结构被认为可以显着缩短电子和离子的扩散路径。同时，具有一定石墨化程度的碳基体可以显着提高整体电导率。结果，作为钠离子电池的负极材料，Na 2 Ti 3 O 7 / C纳米纤维电极显示出令人印象深刻的电化学性能。它显示出110 mA h g -1的可逆容量在以1 C的速率经过500次循环后。此外，几乎没有容量降低，Na 2 Ti 3 O 7 / C纳米纤维电极的放电容量在以50 C的高速率经过1500次循环后仍保持在58 mA h g -1。。优异的电化学性能使Na 2 Ti 3 O 7 / C纳米纤维成为阳极材料，对可用于大规模储能的钠离子电池具有广阔的前景。
更新日期：2018-09-04
中文翻译：
Na2Ti3O7 / C纳米纤维，用于钠离子电池中的高倍率和超长寿命阳极
Na 2 Ti 3 O 7 / C纳米纤维是通过电纺丝工艺和水热处理成功合成的。这些一维纳米纤维在表面上具有二维纳米片的独特结构被认为可以显着缩短电子和离子的扩散路径。同时，具有一定石墨化程度的碳基体可以显着提高整体电导率。结果，作为钠离子电池的负极材料，Na 2 Ti 3 O 7 / C纳米纤维电极显示出令人印象深刻的电化学性能。它显示出110 mA h g -1的可逆容量在以1 C的速率经过500次循环后。此外，几乎没有容量降低，Na 2 Ti 3 O 7 / C纳米纤维电极的放电容量在以50 C的高速率经过1500次循环后仍保持在58 mA h g -1。。优异的电化学性能使Na 2 Ti 3 O 7 / C纳米纤维成为阳极材料，对可用于大规模储能的钠离子电池具有广阔的前景。
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