Lithium storage mechanism and catalytic behavior of CeO₂

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• 作者：Chunxiu Hua ; Xiangpeng Fang ; Zhiwei Yang ; Yurui Gao ; Zhaoxiang Wang ; ^{zxwang@iphy.ac.cn} ; Liquan Chen
• 关键词：CeO2 ; Lithium storage mechanism ; Solid solution reaction ; SEI ; Catalyst
• 刊名：Electrochemistry Communications
• 出版年：2012
• 出版时间：November, 2012
• 年：2012
• 卷：25
• 期：Complete
• 页码：66-69
• 全文大小：1136 K

文摘

The lithium storage mechanism of carbon-coated nano-CeO₂ was studied by in situ X-ray diffraction. It is found that the CeO₂ stores lithium by a solid solution reaction. Due to the catalytic effect of the nano-CeO₂, electrolyte decomposition occurs above 1.10 V during discharge and the solid electrolyte interphase (SEI) layer decomposes below 2.50 V during recharge. These findings help to understand the lithium storage mechanism in nano-CeO₂ and demonstrate its potential applications as a room-temperature electro-catalyst.