Abstract Al/Fe-doped V6O13 is synthesized via a solvothermal method using V2O5, C2H5OH, Al(NO3)3·9H2O and Fe(NO3)3·9H2O as raw materials. Results of XRD show that different Al/Fe-doped amounts of V6O13 are successfully synthesized. Figures of SEM reveal different morphologies of Al/Fe-doped V6O13. Charge- discharge results indicate that the suitable Al/Fe-doping can improve the electrochemical performance of the material. When the mole ratio of Al/Fe is 5.33/4.95, the average width of the sample is 200 nm and the average length is 4.8 μm. This morphology can shorten the transport path of lithium ions. Meanwhile, the initial discharge specific capacity of the sample is 426.9 mAh/g, which increases by 52% compared to pure phase. The suitable Al/Fe-doping is also conducive to reducing the charge transfer resistance and increasing the diffusion rate of lithium ions. The current research results show that Al/Fe-doped V6O13 has potential application value in cathode material of lithium-ion batteries.

中文翻译：

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溶剂热制备Al/Fe掺杂的V6O13作为锂离子电池正极材料具有增强的电化学性能

摘要 以V2O5、C2H5OH、Al(NO3)3·9H2O和Fe(NO3)3·9H2O为原料，采用溶剂热法合成了Al/Fe掺杂的V6O13。XRD 结果表明成功合成了不同 Al/Fe 掺杂量的 V6O13。SEM 图显示了 Al/Fe 掺杂的 V6O13 的不同形态。充放电结果表明适当的Al/Fe掺杂可以提高材料的电化学性能。当Al/Fe摩尔比为5.33/4.95时，样品的平均宽度为200 nm，平均长度为4.8 μm。这种形态可以缩短锂离子的传输路径。同时，样品的初始放电比容量为426.9 mAh/g，比纯相增加了52%。适当的Al/Fe掺杂也有利于降低电荷转移电阻，提高锂离子的扩散速率。目前的研究结果表明，Al/Fe掺杂的V6O13在锂离子电池正极材料中具有潜在的应用价值。