A comparative study of Li8NaV3(P2O7)3(PO4)2 and Li9V3(P2O7)3(PO4)2: Synthesis, structure and electrochemical properties
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- 作者：Quan Kuanga ; sckq@scut.edu.cn" class="auth_mail" title="E-mail the corresponding author ; Yanming Zhaoa ; b ; Youzhong Donga ; Qinghua Fana ; Xinghao Linc ; Xudong Liuc
- 关键词：Li8NaV3(P2O7)3(PO4)2 ; Li9V3(P2O7)3(PO4)2 ; Two-step method ; Cathode ; Li-ion batteries
- 刊名：Journal of Power Sources
- 出版年：2016
- 出版时间：29 February 2016
- 年：2016
- 卷：306
- 期：Complete
- 页码：337-346
- 全文大小：3937 K
文摘
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The lowest formation-enthalpy Li-site substitution can improve the redox potential.
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Li8NaV3(P2O7)3(PO4)2 was first prepared with Na in Li1(2b) site.
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Two-step reaction was proposed via Li3VO4 or (Li8Na)1/3VO4 as intermediates.
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Li8NaV3(P2O7)3(PO4)2 showed a 4.4 V charge plateau at the 1st cycle.
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Li9V3(P2O7)3(PO4)2 and Li8NaV3(P2O7)3(PO4)2 are promising Li-ion anodes.