Abstract LiV3O8 attracts much research interest because it is a high theoretical specific capacity and low cost cathode material of lithium ion battery and is also a good candidate for the anode material of aqueous lithium ion battery. Therefore, it is worth of further investigation on preparing LiV3O8 materials. However, when preparing LiV3O8 materials, impurities such as L0.3V2O5 are usually accompanied. Besides, the calcination temperature and time when preparing LiV3O8 materials in different literatures are diverse. To solve this problem, the LiV3O8 crystal are prepared and the optimum calcination conditions and the optimum stoichiometry of Li:V are systematic studied. The optimum calcination temperature and time is chosen at 400 °C for 5 h. The best stoichiometry of Li:V is 1.15:3. The LiV3O8 material prepared in this study has a good purity and no impurity is found. When act as cathode of LIBs, the LiV3O8 crystal has relatively high discharge capacity as 220–240 mAh g−1.

中文翻译：

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选择制备 LiV3O8 晶体的最佳煅烧条件

摘要 LiV3O8是一种理论比容量高、成本低的锂离子电池正极材料，也是水系锂离子电池负极材料的良好候选材料，因此引起了广泛的研究兴趣。因此，LiV3O8 材料的制备值得进一步研究。但在制备LiV3O8材料时，通常会伴随有L0.3V2O5等杂质。此外，不同文献中制备LiV3O8材料的煅烧温度和时间也各不相同。为解决这一问题，制备了LiV3O8晶体并系统研究了Li:V的最佳煅烧条件和最佳化学计量。最佳煅烧温度和时间选择为 400 °C 5 小时。Li:V 的最佳化学计量比为 1.15:3。本研究制备的 LiV3O8 材料纯度良好，未发现杂质。当作为锂离子电池的阴极时，LiV3O8 晶体具有相对较高的放电容量，为 220-240 mAh g-1。