Ni-Rich Layered Oxide Li-1.05(Ni0.7Mn0.3)O-2 as a Highly Reversible Cathode Material for Lithium-Ion Batteries

作者：Zhong, Shengwen^*; Chen, Peng; Yao, Wenli

来源：ECS Electrochemistry Letters, 2015, 4(6): A45-A48.

DOI：10.1149/2.0041506eel

• ELECTROCHEMICAL PROPERTIES
• POSITIVE ELECTRODE
• INSERTION MATERIAL

Ni-rich layer-structured Li-1.05(Ni0.7Mn0.3)O-2 compounds were constructed from calcining nickel manganese hydroxides by a simple co-precipitation method. Ni-rich Li-1.05(Ni0.7Mn0.3)O-2 showed a pure NaFeO2 phase and uniform spherical particles. Li-1.05(Ni0.7Mn0.3)O-2 cathode demonstrated high reversible capacity (more than 190 mAhg(-1)) and good cycling stability (more than 160 mAhg(-1) at voltage cutoff of 4.2 V over 100 cycles). Furthermore, its high rate capability could be maintained with the capacity of similar to 140 mAhg(-1) at 5C. The improved cycling stability maybe resulted from low Li/Ni cation mixing and good structure stability in the voltage between 2.75 and 4.2 V.

• 出版日期2015
• 单位江西理工大学