A New High Energy Lithium ion Batteries Consisting of 0.5Li(2)MnO(3)center dot 0.5LiMn(0.33)Ni(0.33)Co(0.33)O(2) and Soft Carbon Components

作者：Wang, Tao; Chen, Zhanjun; Zhao, Ruirui^*; Li, Aiju; Chen, Hongyu^*

来源：Electrochimica Acta, 2016, 194: 1-9.

DOI：10.1016/j.electacta.2015.12.140

• Lithium ion battery
• Lithium rich layered oxides cathode
• Soft carbon

Electrochemical performance of the 18650 lithium-ion batteries consisting lithium-rich layered oxides 0.5Li(2)MnO(3)center dot 0.5LiMn(0.33)Ni(0.33)Co(0.33)O(2) cathode material and soft carbon anode is investigated in detail. The cathode is synthesized by a spray drying process and the properties are studied by various methods, while the soft carbon is commercial available. The assembled batteries can exhibit excellent cyclic performance with a capacity retention of 90.2% even after 600 cycles in the voltage ranges of 2.0-4.5 V (at 1C-rate). Moreover, they can also deliver excellent rate capabilities as the discharge capacity under 40C is nearly equal to 83.9% of that under 1C (voltage range is in 2.0-4.5 V). Furthermore, in order to evaluate the mechanism of the superior performance exhibited by the full cells, cells after 300 cycles are disassembled in a glove box to assess the changes on the active materials by using a series of technique methods, including a scanning electron microscopy (SEM), X-ray diffraction (XRD), energy dispersive spectrometry (EDS), High-resolution transmission electron microscope (TEM) and selected area electron diffraction (SAED).

• 出版日期2016-3-10
• 单位华南师范大学