1. 毕业设计（论文）主要内容：

研究固相反应法快速低温合成LLZO（Li₇La₃Zr₂O₁₂）陶瓷粉体的可行性及其适宜温度，探究烧结时间、烧结温度与原料配比对LLZO物相的生成和杂相（La₂Zr₂O₇）消除的影响，确定LLZO立方相粉体的最佳合成工艺，结合相关理论对固相反应法快速低温合成LLZO立方相粉体的机理；探索掺杂元素对LLZO立方相陶瓷的离子导电性能的影响；研究固体电解质和电极之间的界面特性，提高LLZO与正负极之间的导电率。

整个过程采用XRD,FESEM, TEM等手段进行材料表征。

2. 毕业设计（论文）主要任务及要求

1. 查阅不少于20篇的相关资料，其中英文文献不少于10篇，完成开题报告，并完成不少于5000字的英文文献翻译；

2. 探究烧结温度、原料比例、掺杂元素种类与含量对llzo立方相粉体合成的影响，提出固相反应法快速低温合成llzo立方相粉体的机理；

3. 探究掺杂元素种类与含量、烧结温度等合成工艺对llzo立方相陶瓷离子导电率的影响；

3. 毕业设计（论文）完成任务的计划与安排

1. 第1－2周：查阅相关文献资料，明确研究内容，确定方案，完成开题报告；

2. 第3－6周：研究固相反应法快速低温合成llzo立方相粉体的可行性及其最佳条件，并进行物相和微观结构表征，结合相关理论对其合成机理进行阐述；

3. 第7－14周：探索掺杂元素对llzo立方相粉体与陶瓷合成及其离子导电率性能的影响，优化电极和固体电解质之间的界面接触，改善li 传导问题；

4. 主要参考文献

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5. [5] Saccoccio M, Yu J, Lu Z, et al. Lowtemperature pulsed laser deposition of garnet Li_6.4La₃Zr_1.4Ta_0.6O₁₂ films as all solid-state lithium battery electrolytes[J]. Journal of PowerSources, 2017, 365:43-52.
6. [6] Fei Chen, Dunjie Yang, Wenping Zha, BodiZhu, Yanhua Zhang, Junyang Li, Yuping Gu, Qiang Shen, Lianmeng Zhang, Donald R.Sadoway. Solid polymer electrolytes incorporating cubic Li₇La₃Zr₂O₁₂ for all-solid-state lithium rechargeablebatteries[J]. Electrochimica Acta, 2017, 258: 1106-1114.
7. [7] Geng H, Chen K, Yi D, et al. FormationMechanism of Garnet-Like Li₇La₃Zr₂O₁₂ Powder Prepared by Solid State Reaction[J]. Rare Metal Materials amp;Engineering, 2016, 45(3):612-616.
8. [8] Zhongli Hu,Hongdong Liu,Haibo Ruan,RongHu,Yongyao Su,Lei Zhang. High Li-ion conductivity of Al-doped Li₇La₃Zr₂O₁₂ synthesized by solid-state reaction[J]. Ceramics International,2016,42(10): 12156-12160.
9. [9] An-Ni Wang, Juliane Franciele Nonemacher, GangYan, Martin Finsterbusch, Jürgen Malzbender, Manja Krüger. Mechanicalproperties of the solid electrolyte Al-substituted Li₇La₃Zr₂O₁₂ (LLZO) by utilizing micro-pillar indentationsplitting test[J]. Journal of the European Ceramic Society, 2018, 38(9): 3201-3209.
10. [10] Shao C, Liu H, Yu Z, et al. Structure andionic conductivity of cubic Li₇La₃Zr₂O₁₂,solid electrolyte prepared by chemical co-precipitation method[J]. Solid StateIonics, 2016, 287:13-16.