| NaV1-xFexPO4F的合成及电化学性能研究 |
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| 引用本文： | 刘志明,王先友,卓海涛,唐安平.NaV1-xFexPO4F的合成及电化学性能研究[J].电池,2006,36(5):335-337. |
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| 作者姓名： | 刘志明 王先友 卓海涛 唐安平 |
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| 作者单位： | 湘潭大学化学学院,湖南,湘潭,411105;湘潭大学材料与光电物理学院,湖南,湘潭,411105 |
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| 基金项目： | 国家自然科学基金，江苏省自然科学基金，湖南省自然科学基金 |
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| 摘 要： | 运用高温固相法合成了钠离子电池正极材料NaV1-xFexPO4F(x=0、0.04和0.06)。通过FTIR、XRD和SEM等方法,对材料的晶体结构和形貌进行了研究。从材料的晶体结构、恒流充放电测试和循环性能等方面,分析了掺杂元素Fe在改善材料性能中的作用。掺Fe后,正极材料的电化学性能得到改善,NaV0.94Fe0.06PO4F(x=0.06)在循环20次后的可逆容量保持率为91.8%。
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| 关 键 词： | 钠离子电池 正极材料 Fe掺杂 氟磷酸盐化合物 电化学性能 |
| 文章编号： | 1001-1579(2006)05-0335-03 |
| 修稿时间： | 2006年4月15日 |
Studies on synthesis and electrochemical performance of NaV1- xFexPO4F |
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| LIU Zhi-ming,WANG Xian-you,ZHUO Hai-tao,TANG An-ping.Studies on synthesis and electrochemical performance of NaV1- xFexPO4F[J].Battery Bimonthly,2006,36(5):335-337. |
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| Authors: | LIU Zhi-ming WANG Xian-you ZHUO Hai-tao TANG An-ping |
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| Abstract: | NaV_(1-x)Fe_xPO_4F(x=0,0.04,0.06) as cathode material of sodium-ion battery was prepared by the high temperature solid-phase method.The crystal structure and morphology of the material were studied by FTIR,XRD and SEM methods.The effects of the doped element Fe on improving the performance of the material were analyzed in terms of the crystal structure,galvanostatic charge-discharge test and cycle performance.The electrochemical performance of cathode material improved after the doping of Fe,the capacity retention of NaV_(0.94)Fe_(0.06)PO_4F(x=0.06) was 91.8% after 20 cycles. |
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| Keywords: | sodium-ion battery cathode material Fe doping fluorophosphate compound electrochemical performance |
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