Affecting Mechanism of Fe Doping in Spinel LiNi0.5Mn1.5O4

作者：Liu Guoqiang; Li Xueping; Li Ying^*

来源：Rare Metal Materials and Engineering, 2016, 45(7): 1755-1759.

• lithium ion batteries
• spinel LiNi0.5Mn1.5O4
• cathode materials
• Fe doping
• charge-discharge characteristics

Spinel LiNi0.5Mn1.5O4 and Fe-doped LiNi0.45Fe0.1Mn1.45O4 were synthesized by a wet chemical method combined with a solid state reaction process. Spinel LiNi0.5Mn1.45O4 and LiNi0.45Fe0.1Mn1.45O4 were compared from the aspects of crystal structure, surface morphology, charge-discharge characteristics and rate capability. The mechanism of Fe doing was deduced based on the measured oxygen deficiency amount from the TGA experiment. It is that the doped Fe can maintain some oxygen deficiency, and thus spinel LiNi0.5Mn1.5O4 contains some Mn3+ to improve the rate capability.

• 出版日期2016-7
• 单位东北大学