Compatibility between LiNi_0.5Mn_1.5O₄ and electrolyte based upon lithium bis(oxalate)borate and sulfolane for high voltage lithium-ion batteries

详细信息    查看全文

• 作者：Chunlei Li ; Yangyu Zhao ; Hongming Zhang ; Jinliang Liu ; Jie Jing ; Xiaoling Cui ; Shiyou Li ; ^{lishiyoulw@163.com}
• 关键词：Lithium bis(oxalate)borate ; Sulfolane ; Compatibility ; LiNi0.5Mn1.5O4
• 刊名：Electrochimica Acta
• 出版年：2013
• 出版时间：1 August, 2013
• 年：2013
• 卷：104
• 期：Complete
• 页码：134-139
• 全文大小：894 K

文摘

To seek the compatibility between LiNi_0.5Mn_1.5O₄ and electrolyte based upon lithium bis(oxalate)borate (LiBOB) and sulfolane (SL), the electrochemical performances of 0.7 mol L^?1 LiBOB-SL/DMC (1:1) electrolyte are investigated. This electrolyte has characteristic of good stability against oxidative decomposition (5.3 V, vs. Li/Li⁺) and satisfactory safety performance. When used in LiNi_0.5Mn_1.5O₄/Li cells, this electrolyte exhibits several advantages, such as stable cycle performance, low cell resistance, good rate performance, and high discharge voltage plateau. It suggests that LiBOB-SL/DMC electrolyte has good compatibility with LiNi_0.5Mn_1.5O₄ cathode, and would be an attractive electrolyte for 5 V high voltage lithium-ion batteries based upon LiNi_0.5Mn_1.5O₄ cathode.