In recent days, portable electronic devices are indispensable to improve the standard of living, which led to the demand for energy storage devices with good performance. Among the storage devices, rechargeable lithium ion batteries play a vital role due to the good electrical conductivity. In this study, impedance and electrical performance were studied for zirconium-doped Li 4 Mn 5 O 12 at different concentrations (0.1, 0.2, 0.3 and 0.4 mol). The structural and morphological properties of the material were studied by powder X-ray diffractometer spectra and scanning electron microscopy analysis. Morphological properties exhibit the combination of polyhedral and needle-shaped particles, which were in micron size. The Nyquist plot indicates the absence of grain boundary effect and explained the bulk property, i.e., the negative temperature co-efficient of resistance property of the material. Zirconium-doped lithium manganese oxide (0.2 mol) exhibits good electrical property than other concentrations. Maximum conductivity was (1.4 × 10 −5 S cm −1 ) observed at 160°C for the same. These results suggested that 0.2 mol of zirconium will enhance the electrical property of lithium manganese oxide (Li 4 Mn 5 O 12 ).

中文翻译：

---

掺锆锂锰氧化物的阻抗分析

最近，便携式电子设备对于提高生活水平必不可少，这导致了对性能良好的储能设备的需求。在存储设备中，可充电锂离子电池由于其良好的导电性而发挥着至关重要的作用。在本研究中，研究了不同浓度（0.1、0.2、0.3 和 0.4 mol）的锆掺杂 Li 4 Mn 5 O 12 的阻抗和电性能。通过粉末X射线衍射光谱和扫描电镜分析研究了材料的结构和形态特性。形态学特性表现出多面体和针状颗粒的组合，其尺寸为微米级。奈奎斯特图表明不存在晶界效应并解释了体积特性，即，材料电阻特性的负温度系数。锆掺杂的锂锰氧化物 (0.2 mol) 表现出比其他浓度更好的电性能。最大电导率是 (1.4 × 10 -5 S cm -1 ) 在 160°C 下观察到的。这些结果表明，0.2 mol 的锆将增强锂锰氧化物（Li 4 Mn 5 O 12 ）的电性能。