Increasing the durability of Li-ion batteries by means of manganese ion trapping materials with nitrogen functionalities

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• 作者：Anjan Banerjee^a ; Baruch Ziv^a ; Shalom Luski^a ; Doron Aurbach^a ; ^{Doron.Aurbach@biu.ac.il} ; Ion C. Halalay^b
• 关键词：Li-ion batteries ; Mn dissolution ; Chelating agents ; Functional separators ; LiMn2O4 ; Lattice shrinkage
• 刊名：Journal of Power Sources
• 出版年：2017
• 出版时间：15 February 2017
• 年：2017
• 卷：341
• 期：Complete
• 页码：457-465
• 全文大小：1868 K
• 卷排序：341

文摘

Concept of trapping transition metal ions in Li-ion battery inter-electrode space. Materials with nitrogen functionalities trap Mn ions in LMO-graphite cells. 75–125% more capacity retained after 30 days cycling at 55 °C. 92–95% less Mn on graphite negative electrodes in cells with trapping separators. 10 times smaller LMO lattice shrinkage in cells with trapping separators.