Toward understanding the lithiation/delithiation process in Fe0.5TiOPO4/C electrode material for lithium-ion batteries
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- 作者：Karima Lasria ; Abdelfattah Mahmoudb ; mahmoudrca@gmail.com" class="auth_mail" title="E-mail the corresponding author ; Ismael Saadounea ; c ; Moulay Tahar Sougratid ; e ; Lorenzo Stievanod ; e ; Pierre-Emmanuel Lippensd ; e ; Raphaë ; l Pierre Hermannb ; f ; g ; Helmut Ehrenbergh
- 关键词：Lithium-ion batteries ; Anode material ; Fe0.5TiOPO4 ; Reaction mechanism ; In situ XRD ; In situ XANES
- 刊名：Solar Energy Materials and Solar Cells
- 出版年：2016
- 出版时间：April 2016
- 年：2016
- 卷：148
- 期：Complete
- 页码：11-19
- 全文大小：1429 K
文摘
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Fe0.5TiOPO4 anode material is obtained by a sol–gel method directly from H3PO4 acid.
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A reversible capacity of 250 mAh/g is reached after 50 cycles at 5C rate.
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The lithiation process in the Fe0.5TiOPO4 material occurs in three potential regions.
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In-situ XRD clearly shows Fe metal extrusion and amorphization of the studied phosphate.