1. 毕业设计（论文）的内容和要求

在当今全球性能源紧缺的大背景下,锂离子电池的发展情况是研究领域的热点问题，锂-硫电池的研究又是其热门分支。

虽然锂-硫电池有很多优势，例如硫元素廉价丰富，电池理论容量高，但是我们也无法忽略锂-硫电池的劣势，它的劣势在于硫元素导电性不强，同时在充放电过程中多硫化物容易在电介质中溶解而造成质量损失。

针对这一问题，本课题以zifs衍生材料为突破口，通过制备zif-67衍生钴基材料为前驱体的正极材料，来改进锂-硫电池的循环性能。

2. 参考文献

[1] 高志强，曹文秀. 金属有机骨架材料的合成及应用 [M]. 广东: 广东化工出版社, 2012. [2] Manthiram. A ,Fu. YZ. Rechargeable Lithium-Sulfur Batteries [J]. Chemical Reviews. 2014, 114(23): 11751-11787. [3] 孟宪斌，高秋明. 由含铝金属有机骨架材料制备的多孔碳在锂硫电池中的应用[M]. 北京:高等学校化学学报, 2014 [4] YiJuan.Li, JingMin.Fan. A novel synergistic composite with multi-functional effects for high-performance Li#8211;S batteries [J], Energy Environ. Sci., 2016, 9, 1998-2004 [5] Mentbayeva A, Belgibayeva A, Umirov N, et al. High Performance Freestanding Composite Cathode for Lithium-Sulfur Batteries[J]. Electrochimica Acta. 2016, 217: 242-248. [6] Bruce P G, Freunberger S A, Hardwick L J, et al. Li-O2 and Li-S Batteries with High Energy Storage[J]. Nature Materials. 2012, 11(1): 19-29. [7] Kang W, Deng N, Ju J, et al. A Review of Recent Developments in Rechargeable Lithium-Sulfur Batteries.[J]. Nanoscale. 2016, 8(37). [8] Zhaoqiang.Li, Caixia.Li. Reduced graphene oxide wrapped MOFs-derived cobalt-doped porous carbon polyhedrons as sulfur immobilizers as cathodes for high performance lithium sulfur batteries [J]. Nano Energy 2016,(23):15#8211;26. [9] Ji X, Nazar L F. Advances in Li-S Batteries[J]. Journal of Materials Chemistry. 2010, 20(44): 9821-9826. [10] Ji X, Lee K T, Nazar L F. A Highly Ordered Nanostructured Carbon-Sulphur Cathode for Lithium-Sulphur Batteries[J]. Nature Materials. 2009, 8(6): 500-506. [11] Xie Q X, Zheng A R, Xie C, et al. Graphene Functionalized Attapulgite/Sulfur Composite as Cathode of Lithium-Sulfur Batteries for Energy Storage[J]. Microporous and Mesoporous Materials. 2016, 224: 239-244. [12] Zhi W S, Wang H T, Hsu P C, et al. Facile synthesis of Li2S-polypyrrole composite structures for high-performance Linot;2S cathodes[J]. Energy Environmental Science. 2014,7: 672-676. [13] Wang D H, Xie D, Yang T, et al. Conversion from Li2SO4 to Li2S@C on carbon paper matrix: A novel integrated cathode for lithium-sulfur batteries[J]. Journal of Power Sources. 2016, 331:475-480.

3. 毕业设计（论文）进程安排

12.26-1.13 查阅文献，了解课题，翻译英文文献，开题 3.12-4.30 实验 5.1-5.12 论文中期检查 5.12－5.28 实验总结 5.28－6.6 撰写论文及论文答辩