A new strategy to diminish the 4 V voltage plateau of LiNi0.5Mn1.5O4

作者：Liu Guoqiang^*; Zhang Lingxi; Sun Lu; Wang Lun

来源：Materials Research Bulletin, 2013, 48(11): 4960-4962.

DOI：10.1016/j.materresbull.2013.07.002

• Inorganic compounds
• Chemical synthesis
• X-ray diffraction
• Electrochemical properties

As for spinel LiNi0.5Mn1.5O4, there is 4 V voltage plateau in the charge-discharge profiles. This voltage plateau can be reduced by an annealing process, however it is hard to avoid it completely. In this study, a new strategy of partial substitution for Mn by Mg is applied. There is no 4 V voltage plateau in the charge-discharge profiles of Mg-doped compound LiNi0.5Mn1.45Mg0.05O4. This compound exhibits good electrochemical properties which can be used as cathode material of lithium ion batteries. At 1 C rate, it can deliver a capacity of around 129 mAh g(-1) and remain good cycle performance.

• 出版日期2013-11
• 单位东北大学