本研究針對添加鈦之陰極材料的導電性及其電化學性質作探討。根據文獻得知陰極材料LiMn2O4的電阻率在降溫過程中，當溫度約280K時，電阻率有陡升的現象，而隨著鈦離子添加量的增加，此現象便逐漸消失，且電阻率會有先降低後增加之趨勢。
利用交流阻抗分析陰極材料LiMn2O4在經過球磨細化後以及退火處理後的粉末，兩者間的電荷轉移電阻與鋰離子擴散係數有明顯的不同。而添加鈦離子的LiMn2-xTixO4粉末利用交流阻抗分析可得知電荷轉移電阻隨著添加量的增加而呈持平的現象，在鋰離子擴散係數方面則是與室溫電阻率呈現相反之趨勢。

This syudy disscused conductivity and electochemical properties of LiMn2O4. According to the reference, the resistivity of material has a suddenly arise about 280K in the cooling temperature process. However, this phenomenon will disappear with the increacing of Ti4+ substitution and the trend of resistivity will increase after reducing
Analysed the the charge transfer resistance and diffusion coefficient of LiMn2O4 which after annealing and deal with ball milling by EIS. And we can observe there is quite different between each other. As the increacing of Ti4+ substitution, the study shows that charge transfer resistance didn’t have an obvious change. However, the trend of the diffusion coefficient of lithium ion is opposite to the room temperature resistivity.

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