引用本文:
童庆松, 刘永梅, 施继成, 连锦明. 掺氟锂钒氧化物的电化学性能[J]. 应用化学,
2006, 23(7): 776-781.
Citation: TONG Qing-Song, LIU Yong-Mei, SHI Ji-Cheng, LIAN Jin-Ming. Electrochemical Performance of the Fluorine Ion Doped Lithium Vanadium Oxides[J]. Chinese Journal of Applied Chemistry, 2006, 23(7): 776-781.
Citation: TONG Qing-Song, LIU Yong-Mei, SHI Ji-Cheng, LIAN Jin-Ming. Electrochemical Performance of the Fluorine Ion Doped Lithium Vanadium Oxides[J]. Chinese Journal of Applied Chemistry, 2006, 23(7): 776-781.
掺氟锂钒氧化物的电化学性能
English
Electrochemical Performance of the Fluorine Ion Doped Lithium Vanadium Oxides
Abstract:
Via the solid-phase synthesizing method,a series of fluorine ion doped lithium vanadium oxides with the fluorine contents of 0.059%,0.19%,0.35% and 0.56%(mass fraction) was synthesized at 400℃, respectively.The experimental results show that the oxidation state of the vanadium of the fluorine ion doped lithium vanadium oxides is decreased with the increase of fluorine content in the samples and the doped lithium vanadium oxide with a fluorine content of 0.19%(mass fraction) shows a monoclinic structure of Li1.2V3O8 and exhibits a max capacity of 272 mA·h/g and has a capacity fading rate of 16% in 40 cycles.Thermal analysis,XRD and Raman analysis showed that the fluorine dopant can stabilize the crystal structure of lithium vanadium oxides.
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Key words:
- lithium ion battery
- / positive material
- / fluorine dopant
- / lithium vanadium oxide
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