Effects of Lithium Content on Structure and Electrochemical Properties of Li-rich Cathode Material Li1.2+xMn0.54Ni0.13Co0.13O2

作者：Xin Wei, Shichao Zhang, Puheng Yang, Honglei Li, Shengbin Wang, Yanbiao Ren, Yalan Xing, Juan Meng · 发表于：International Journal of Electrochemical Science · 年份：2017 · DOI：10.20964/2017.06.32 · 被引用次数：10 · 研究领域：Advancements in Battery Materials、Extraction and Separation Processes、Advanced Battery Materials and Technologies

Lithium content is one of crucial factors for the electrochemical properties of Li-rich cathode materials. The effects on crystalline structure and electrochemical properties are thoroughly investigated by Rietveld refinement, characterization and electrochemical tests. With the increasing of Li content, cation disorder is alleviated and the redox reaction of Mn 4+ /Mn 3+ gets obvious. The sample with 10% extra-lithium exhibits highest discharge capacity, best cyclic stability and smallest charge transfer resistance.