1. 毕业设计（论文）的内容和要求

目前的锂离子电池体系已经达到瓶颈，为了满足日益增长的能源需求，迫切需要研发出能量密度更高的锂离子电池正极材料，主要的途径有提高工作电压及增加放电比容量。

橄榄石型结构的磷酸钴锂(licopo4)具有4.8v(vs li /li)的高电压以及167ma h g-1的理论容量，被认为是最有前景的新一代高容量高电压锂离子电池正极材料。

主要内容包括： 文献查阅：查阅有关橄榄石系磷酸钴锂的文献，要求学习并掌握利用中国期刊网、ca、ei、elsevier等查阅文献，不少于15篇。

2. 参考文献

[1] Ji L, Lin Z, Alcoutlabi M, et al. Recent developments in nanostructured anode materials for rechargeable lithium-ion batteries [J]. Energy Environmental Science, 2011, 4(8): 2682-99. [2] 于峰，张敬杰. 锂离子电池正极材料的晶体结构及电化学性能 [J]. 化学进展, 2010, 22(1): 9. [3] Amine K, Yasuda H, Yamachi M. Olivine LiCoPO4 as 4.8 V electrode material for lithium batteries [J]. Electrochemical and Solid State Letters, 2000, 3(4): 178-9. [4] Bramnik N, Bramnik K, Buhrmester T, et al. Electrochemical and structural study of LiCoPO4-based electrodes [J]. Journal of Solid State Electrochemistry, 2004, 8(8): [5] Wolfenstine J, Lee U, Poese B, et al. Effect of oxygen partial pressure on the discharge capacity of LiCoPO4 [J]. Journal of Power Sources, 2005, 144(1): 226-30. [6] 王冠. 锂离子电池正极材料LiFePO_4制备及其性能研究 [D]; 复旦大学, 2006. [7] 刘伟利. 锂离子电池正极材料LiFePO_4/C的性能改善 [D]; 浙江大学, 2012. [8] Xu J, Chou S-L, Avdeev M, et al. Lithium rich and deficient effects in LixCoPO4 (x=0.90, 0.95, 1, 1.05) as cathode material for lithium-ion batteries [J]. Electrochimica Acta, 2013, 88(865-70. [9] Wang F, Yang J, NuLi Y, et al. Novel hedgehog-like 5V LiCoPO4 positive electrode material for rechargeable lithium battery [J]. Journal of Power Sources, 2011, 196(10): 4806-10. [10] Li H H, Jin J, Wei J P, et al. Fast synthesis of core-shell LiCoPO4/C nanocomposite via microwave heating and its electrochemical Li intercalation performances [J]. Electrochemistry Communications, 2009, 11(1): 95-8. [11] Liu J C T E, Song X. Spherical nanoporous LiCoPO4/C composites as high performance cathode materials for rechargeable lithium-ion batteries [J]. Journal of Materials Chemistry, 21(27): 4. [12] 袁子洲, 王冰霞, 梁卫东, et al. 高能球磨制备非晶粉末的形成机理及形成能力的研究综述 [J]. 粉末冶金工业, 2006, 01): 30-4. [13] Rabanal M E, Gutierrez M C, Garcia-Alvarado F, et al. Improved electrode characteristics of olivine-LiCoPO4 processed by high energy milling [J]. Journal of Power Sources, 2006, 160(1): 523-8. [14] Morgan D, Van der Ven A, Ceder G. Li conductivity in LixMPO4 (M = Mn, Fe, Co, Ni) olivine materials [J]. Electrochemical and Solid State Letters, 2004, 7(2): A30-A2. [15] 邹美捷, 刘晓红, 许春晓, et al. 锂离子电池正极材料LiCoPO_4的研究现状和展望 [J]. 广东化工, 2009, 11): 71-2. [16] 曹雁冰. 聚阴离子型铁系锂离子电池正极材料的合成及改性研究 [D]; 中南大学, 2010. [17] Allen J L, Jow T R, Wolfenstine J. Improved cycle life of Fe-substituted LiCoPO4 [J]. Journal of Power Sources, 2011, 196(20): 8656-61. [18] Bramnik N N, Nikolowski K, Baehtz C, et al. Phase transitions occurring upon lithium insertion-extraction of LiCoPO4 [J]. Chemistry of Materials, 2007, 19(4): 908-15. [19] 曹雁冰, 段建国, 彭忠东, et al. 固相法合成原位碳包覆LiFePO_4复合正极材料及其性能 [J]. 中国有色金属学报, 2012, 04): 1209-15. [20] Wang J, Sun X. Understanding and recent development of carbon coating on LiFePO4 cathode materials for lithium-ion batteries [J]. Energy Environmental Science, 2012, 5(1): 5163-85. [21] Li C, Zhang H P, Fu L J, et al. Cathode materials modified by surface coating for lithium ion batteries [J]. Electrochimica Acta, 2006, 51(19): 3872-83. [22] 刘全兵. 锂离子电池正极材料的制备及其性能研究 [D]; 华南理工大学, 2012. [23] Ni J, Wang H, Gao L, et al. A high-performance LiCoPO4/C core/shell composite for Li-ion batteries [J]. Electrochimica Acta, 2012, 70(349-54. [24] Gangulibabu, Nallathamby K, Meyrick D, et al. Carbonate anion controlled growth of LiCoPO4/C nanorods and its improved electrochemical behavior [J]. Electrochimica Acta, 2013, 101(18-26. [25] Hu M, Pang X, Zhou Z. Recent progress in high-voltage lithium ion batteries [J]. Journal of Power Sources, 2013, 237(229-42. [26] Aravindan V, Cheah Y L, Ling W C, et al. Effect of LiBOB Additive on the Electrochemical Performance of LiCoPO4 [J]. Journal of the Electrochemical Society, 2012, 159(9): A1435-A9. [27] Xing L Y, Hu M, Tang Q, et al. Improved cyclic performances of LiCoPO4/C cathode materials for high-cell-potential lithium-ion batteries with thiophene as an electrolyte additive [J]. Electrochimica Acta, 2012, 59(172-8. [28] Sharabi R, Markevich E, Fridman K, et al. Electrolyte solution for the improved cycling performance of LiCoPO4/C composite cathodes [J]. Electrochemistry Communications, 2013, 28(20-3.

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 备 注 12.28-1.30 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 5.28－6.9 撰写论文及论文答辩