1. 毕业设计（论文）的内容和要求

自上世纪90年代以来，锂离子电池技术已成为大多数便携式电子设备的主要能源，目前仍需进一步改进锂离子电池的能量密度和循环稳定性，以满足电动汽车等应用的不断增长的需求。

纳米结构材料有望作为未来的高能量密度阴极和阳极材料。

储li材料的纳米化大大避免了一些常见问题，例如电子或离子电导率差、反应动力学缓慢或体积变化大。

2. 参考文献

[1] Marek F. Oszajca, Kostiantyn V. Kravchyk, Marc Walter, et al. Colloidal BiF3 nanocrystals: a bottom-up approach to conversion-type Li-ion cathodes. Nanoscale, 2015, 7, 16601-16605. [2] Jinyoung Chun, Changshin Jo, Sunhye Sahgong, et al. Ammonium Fluoride Mediated Synthesis of Anhydrous Metal Fluoride-Mesoporous Carbon Nanocomposites for High-Performance Lithium Ion Battery Cathodes. ACS Appl. Mater. Interfaces, 2016, 8, 35180-35190. [3] Hiroaki Konishi, Taketoshi Minato, Takeshi Abe, et al. Cycling Fading Mechanism for a Bismuth Fluoride Electrode in a Lithium-Ion Battery. ChemistrySelect, 2017, 2, 3504-3510. [4] Andrew J. Gmitter, Fadwa Badway a, Sylvie Rangan, et al. Formation, dynamics, and implication of solid electrolyte interphase in high voltage reversible conversion fluoride nanocomposites. J. Mater. Chem., 2010, 20, 4149-4161. [5] Andrew J. Gmitter, Anna Halajko, Paul J. Sideris, et al. Subsurface diffusion of oxide electrolyte decomposition products in metal fluoride nanocomposite electrodes. Electrochimica Acta, 2013, 88, 735-744. [6] Junmei Zhao, Huilin Pan, Xiang He, et al. Size-controlled synthesis and morphology evolution of bismuth trifluoride nanocrystals via a novel solvent extraction route. Nanoscale, 2013, 5, 518-522. [7] Benan Hu, Xianyou Wang, Yingping Wang, et al. Effects of amorphous AlPO4 coating on the electrochemical performance of BiF3 cathode materials for lithium-ion batteries. Journal of Power Sources, 2012, 218, 204-211. [8] Zhenhua Yang, Shuncheng Tan, Yunqing Huang, et al. First-principles study on doping effect of Sn in BiF3 as cathode materials for Li-ion battery. Current Applied Physics, 2012, 16, 12-19. [9] Benan Hu, Xianyou Wang, Hongbo Shu, et al. Improved electrochemical properties of BiF3/C cathode via adding amorphous AlPO4 for lithium-ion batteries. Electrochimica Acta, 2013, 102, 8-18.

3. 毕业设计（论文）进程安排

起讫日期 设计（论文）各阶段工作内容2017.12.20～12.26 毕业论文动员、分组、介绍各自题目 2017.12.27～12.29 了解课题背景，查阅文献 2018.01.02～01.13 文献综述，翻译外文资料,开题报告 2018.01.13～02.23 寒假 2018.02.24~02.28 设计实验思路 2018.02.29～03.11 制定具体实验方案 2018.03.12～03.20 准备药品及仪器,制备电池材料 2018.03.21～03.26 X射线衍射分析 2018.03.27～04.06 SEM分析 2018.04.07～04.25 恒流充放电测试、交流阻抗测试等 2018.04.26～04.31 实验结果、数据整理分析 2018.05.01～06.05 改性研究并撰写论文 2018.06.06～06.10 答辩