The reaction mechanism of the Mg2+ and F∿/sup> co-modification and its influence on the electrochemical performance of the Li4Ti5O12 anode material
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- 作者：Wen Lia ; b ; Hao Wanga ; Mianzhong Chena ; Jingjing Gaoa ; Xiang Lia ; Wujie Gea ; Meizhen Qua ; mzhqu@cioc.ac.cn" class="auth_mail" title="E-mail the corresponding author ; Aijia Weib ; Lihui Zhangb ; ZhenFa Liub ; liuzhenfa@hebut.edu.cn" class="auth_mail" title="E-mail the corresponding author
- 关键词：Li4Ti5O12 ; MgF2 ; modification ; lithium ion batteries
- 刊名：Electrochimica Acta
- 出版年：2016
- 出版时间：10 January 2016
- 年：2016
- 卷：188
- 期：Complete
- 页码：499-511
- 全文大小：6400 K
文摘
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The reaction mechanism of Mg2+ and F− co-modification is studied.
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F− reacts with LTO to form new impurity phase, such as anatase TiO2, rutile TiO2 and LiF.
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Mg2+ forms a coating layer on the LTO particles.
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1 wt% Mg2+ and F− co-modified LTO exhibits excellent capacity and rate capability.
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The Mg2+ and F− co-modified LTO samples also present outstanding cycling performance at a high rate of 5C.
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