Synthesis and performance of xLiVPO₄F-yLi₃V₂(PO₄)₃ composites as cathode materials for lithium ion batteries

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• 作者：Yulei Fan¹ ; Zhaomeng Liu¹ ; Qiyang Hu ; ^{Qiyanghucsu@163.com" class="auth_mail" title="E-mail the corresponding author} ; Xinhai Li ; Zhixing Wang ; Huajun Guo ; Jiexi Wang ; ^{wangjiexikeen@csu.edu.cn" class="auth_mail" title="E-mail the corresponding author}
• 关键词：B. Composite ; Lithium-ion battery ; Cathode material ; xLiVPO4F&ndash ; yLi3V2(PO4)3
• 刊名：Ceramics International
• 出版年：2015
• 出版时间：December 2015
• 年：2015
• 卷：41
• 期：10
• 页码：13891-13895
• 全文大小：1141 K

文摘

The xLiVPO₄F–yLi₃V₂(PO₄)₃ composite cathode materials have been synthesized through a soft chemical route with mechanical activation assistance followed by low-temperature calcination. Structural analysis indicates that two phases, i.e. monoclinic Li₃V₂(PO₄)₃ and triclinic LiVPO₄F coexist in the composites. With the addition of LVP, the average particle size becomes smaller. The prepared composite materials show good electrochemical performance, and especially a good cyclic performance, the most suitable x/y ratio being 1:5 where the sample can deliver a reversible capacity of 139 mA h g⁻¹.