Improving the electrochemical performance of Ni-rich cathode material LiNi_0.815Co_0.15Al_0.035O₂ by removing the lithium residues and forming Li₃PO₄ coating layer

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• 作者：Zhong-Feng Tang^a ; Rong Wu^a ; Pei-Feng Huang^b ; Qing-Song Wang^b ; Chun-Hua Chen^a ; ^{cchchen@ustc.edu.cn}
• 关键词：Li-ion battery ; Lithium nickel cobalt aluminum oxide ; Surface lithium ; Ammonium phosphate ; Thermal stability
• 刊名：Journal of Alloys and Compounds
• 出版年：2017
• 出版时间：5 February 2017
• 年：2017
• 卷：693
• 期：Complete
• 页码：1157-1163
• 全文大小：2534 K
• 卷排序：693

文摘

NH4H2PO4 can remove lithium residues and form a uniform Li3PO4 coating layer. Porous Li3PO4 coating layer suppresses side reactions. The thermal stability of Ni-rich cathode materials can be significantly enhanced.