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- W1255121553 abstract "采用碳热还原辅助溶胶-凝胶法合成了锂二次电池正极材料Li VPO4F/C,探讨煅烧温度和煅烧时间对所制备材料纯度、结构和电化学性能的影响.采用X射线衍射（XRD）,扫描电子显微镜（SEM）,恒流充放电,电化学阻抗谱（EIS）和循环伏安（CV）等手段对不同煅烧温度和时间所得的材料进行结构表征和电化学性能测试.当煅烧时间为4 h时,温度为450°C时,能够得到纯相Li VPO4F/C,在0.1C、0.5C和1.0C倍率下,电池放电比容量分别为193.2、175.6和173.7 m Ahg-1.随着煅烧温度升高,Li3V2（PO4）3杂相逐渐增多,650°C煅烧后的材料Li3V2（PO4）3成为主相.优化煅烧时间也能够有效控制Li3V2（PO4）3杂相的生成,能得到电化学性能良好的Li VPO4F/C.当煅烧温度为550°C时,反应3 h后得到的产物综合电化学性能最优." @default.
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- W1255121553 date "2015-01-01" @default.
- W1255121553 modified "2023-10-18" @default.
- W1255121553 title "Synthesis of Fluorinated Polyanionic Lithium Ion Insertion/Extraction Material LiVPO<sub>4</sub>F/C by Carbon Thermal Reduction Assisted Sol-Gel Method" @default.
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