在本研究中，使用一種正極添加劑在電池混漿過程中混入，該添加劑是以雙馬來醯亞胺/5,5-雙甲基巴比妥酸在137℃進聚合而成的寡聚物作為電極添劑使用，並且以兩種比列添加於富鎳的二元正極材料(NCA)中，探討對於LiNi8.5Co1.0Al0.5O2正極材料的影響，再利用正極半電池，進行充放電(C/DC)、交流阻抗圖譜(EIS) 、X射線衍射(XRD)以及循環伏安(CV)以上測試，分析這兩種比例添加至正極材料後，對於電池性能、電池內部阻抗以及電化學性質的影響，並對經過充放電後的極片通過掃描式電子顯微鏡(SEM)、感應耦合電漿光學發射光譜(ICP)、X射線光電子能譜儀(XPS) 、差示掃描量熱法(DSC) 、同步輻射臨場硬吸收光譜(In-situ Hard XAS)，了解經充放電後的電極極片表面型態及元素組成、電極材料的熱穩定性、電子價態的轉變。
本研究的實驗結果，在正極材料中添加0.5wt%的NCA添加劑可以最有效改善正極半電池於常溫電池循環壽命衰退以及電化學反應性質，而高溫環境的充放電測則是添加1 %的NCA添加劑表現最為優異，在加入添加劑後電極材料的熱穩定性也有所提升，也發現添加0.5%的添加劑BMI/5,5BTA可以有效的抑制鋰雜質的生成及降低Ni2+轉變為Ni3+影響陽離子插排混和效應。

In the research, a type of cathode additive is being introduced into the mixing process of the cathode fabrication, which is BMI/5,5-BTA. The oligomer additive is polymerized at the exact temperature of 137oC and being used as addictive. Upon it, 2 different ratio of the additive is being added into nickel rich binary cathode material (NCA) to investigate the effects towards LiNi8.5Co1.0Al0.5O2. The cathode half-cell, undergoes charge-discharge procedure (C/DC), electrochemical impedance spectroscopy (EIS) analysis, X-Ray Diffraction (XRD) and Cyclic Voltammetry (CV)analysis, to analyze the performance, Impedance and electrochemical effects of the 2 different ratio of additive, comparing to pristine. Scanning Electron Microscopy (SEM), Inductively coupled plasma (ICP), X-ray photoelectron spectroscopy (XPS), Differential scanning calorimetry (DSC), Hard X-ray absorption spectroscopy (HXAS), analysis are conducted towards after cycled cathode electrode, to determine the surface morphology, elemental composition, thermos stability, and valence change of electrons. Conclusion of this research is by adding 0.5wt% of the additive into NCA cathode, effectively improves its cycle retention and electrochemical performance under room temperature, however by adding 1wt% shows better performance at high temperature. Furthermore, by adding the additive could increase the cathode’s thermos stability, on the other hand, by adding 0.5wt% of additive (BMI/5,5-BTA) could effectively restrain production of lithium composite impurities, and decrease Ni2+ to Ni3+ cation mixing effects.

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