In this work, lithium ferrite synthesized by designed solid-state method was presented, and physical chemistry and battery performance as anode were also studied. Rietveld refinement of the XRD pattern, shows that the diffraction peaks of lithium ferrite can be indexed to the cubic α-phase (Space group Fm-3m). Bond valence energy landscape mapping confirms two dimensional migration pathway of lithium. Effective magnetic moment of 0.55 μ_B as calculated by Curie-Weiss law justifies the antiferromagnetic ordering for LiFeO₂ after charge-discharge reaction. In addition, both the ex-situ XRD and SQUID magnetometry studies reveal a phase (morphology) transition upon the charge-discharge reaction for LiFeO₂. The distribution function of relaxation times (DFRTs) analysis confirms that two types of Li ion migrations as originated due to the phase transition in the LiFeO₂/lithium coin cell after charge-discharge reaction. Moreover, 4 cycles are needed for attaining capacity ∼600 mAh/g at 0.1C rate. Our work clearly observed the phase (morphology) transition induced magnetic switching in α-LiFeO₂ that provides insights into better understanding of the capacity change of electrode materials for the development of high-performance Li-ion battery.

在这项工作中，提出了通过设计的固态方法合成的铁氧体锂，并研究了作为阳极的物理化学和电池性能。XRD图案的Rietveld精炼表明，锂铁氧体的衍射峰可以指向立方α相（空间群Fm-3m）。键价能态图谱确定了锂的二维迁移路径。0.55μ的有效磁矩_乙通过居里-外斯定律证明计算LiFeO反铁磁性有序₂后的充放电反应。此外，无论是易地XRD和SQUID磁力的研究揭示在用于LiFeO的充放电反应的相（形态学）过渡₂。弛豫时间（DFRT）分析的分布函数证实，两种类型的Li离子迁移是由于充放电反应后LiFeO ₂ /锂硬币电池中的相变而引起的。此外，以0.1C的速率达到约600 mAh / g的容量需要4个循环。我们的工作清楚地观察到在α-LiFeO相位（形态学）过渡感应磁开关₂，其提供见解更好地理解的电极材料的高性能锂离子电池的发展的能力的变化。