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，本课题以硫化锂替代硫元素为突破口，通过原位制备硫化锂正极材料，来改进锂-硫电池的循环性能。

2. 参考文献

[1] 吴宇平, 万春荣, 姜长印. 锂离子二次电池 [M]. 北京: 化学工业出版社, 2002. [2] Tarascon J M, Armand M. Issues and Challenges Facing Rechargeable Lithium Batteries[J]. Nature. 2001, 414(6861): 359-367. [3] 何曼君，陈维孝，董西侠. 高分子物理[M]. 上海:复旦大学出版社, 1990 [4] M. Armand, J. M. Tarascon. Building better batteries [J], Nature, 2008, 451, 652. [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] Mikhaylik Y V, Akridge J R. Polysulfide Shuttle Study in The Li/S Battery System[J]. Journal of the Electrochemical Society. 2004, 151(11): A1969-A1976. [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. [14] Natalia A. C, Steffen W, Norbert W, et al. In-situ X-ray diffraction studies of lithium-sulfur batteries[J]. Journal of Power Sources. 2013, 226: 313-319. [15] Chen Y, Lu S T, Zhou J, et al. 3D graphene framework supported Li2S coated with ultra-thin Al2O3 films: binder-free cathodes for high-performance lithium sulfur batteries[J]. Journal of Materials Chemistry A.2017, 5: 102-112.

3. 毕业设计（论文）进程安排

12.22-1.12 查阅文献，翻译英文文献，开题 3.13-4.28 实验 4.28-5.12 论文中期检查 5.12－5.28 实验总结 5.28－6.5 撰写论文及论文答辩