Structural and electrochemical stability of Li-rich layer structured Li₂MoO₃ in air

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• 作者：Jun Ma ; Yurui Gao ; Zhaoxiang Wang ; ^{zxwang@iphy.ac.cn" class="auth_mail} ; Liquan Chen
• 关键词：Lithium-rich cathode materials ; Layer structure ; Aging ; Stability ; Cycling performance
• 刊名：Journal of Power Sources
• 出版年：15 July, 2014
• 年：2014
• 卷：258
• 期：Complete
• 页码：314-320
• 全文大小：1972 K

文摘

Li₂MnO₃ is an important component of the Li-rich Mn-based high-capacity cathode material for lithium ion batteries, xLi₂MnO₃路(1聽鈭捖?em>x)LiM鈥?/em>O₂ composites. Replacing Li₂MnO₃ with iso-structured Li₂MoO₃ is expected to improve the rate performance and suppress the oxygen release of the composites at high potentials due to the higher electric conductivity of Li₂MoO₃ and its more facile charge compensation (by Mo⁴⁺/Mo⁶⁺ redox) upon Li removal than that of Li₂MnO₃. As part of our series work on the Li₂MoO₃-based Li-rich layer structured cathode materials, this article is to study the structural and performance stability of Li₂MoO₃ in air. The obtained information will shed light on the development and application of xLi₂MoO₃路(1聽鈭捖?em>x)LiM鈥?/em>O₂ composite cathode materials though Li₂MoO₃ will not be applied as an independent cathode material.