采用热膨胀法制备出膨胀率较高的膨胀石墨,并将膨胀石墨和升华硫进行混合热处理,制备出硫-膨胀石墨复合正极材料.利用X-射线衍射、扫描电镜及电化学测试等方法表征材料的结构、形貌和电化学性能.结果表明,这种复合正极材料在25 mA/g的充放电条件下表现出良好的充放电性能,首循环放电比容量接近1600 mAh/g,经过50个放电循环后其比容量仍旧保持在1200 mAh/g之上.
参考文献
| [1] | Xiulei Ji;Kyu Tae Lee;Linda F. Nazar .A highly ordered nanostructured carbon-sulphur cathode for lithium-sulphur batteries[J].Nature Materials,2009(6):500-506. |
| [2] | 禹筱元,余仕禧,周武艺,胡国荣,刘业翔.复合掺杂改性LiMn2-xCrxO4-3xF3x正极材料的制备及性能[J].硅酸盐学报,2010(06):1053-1058. |
| [3] | 杨则恒,赵刚,张卫新.锰掺杂磷酸铁锂／碳正极材料的制备及电化学性能[J].硅酸盐学报,2011(10):1608-1612. |
| [4] | Wang, WK;Wang, Y;Huang, YQ;Huang, CJ;Yu, ZB;Zhang, H;Wang, AB;Yuan, KG .The electrochemical performance of lithium-sulfur batteries with LiClO4 DOL/DME electrolyte[J].Journal of Applied Electrochemistry,2010(2):321-325. |
| [5] | Jiulin Wang;Lu Liu;Zhijun Ling;Jun Yang;Chunrong Wan;Changyin Jiang .Polymer lithium cells with sulfur composites as cathode materials[J].Electrochimica Acta,2003(13):1861-1867. |
| [6] | J. L. Wang;J. Yang;J. Y. Xie;N. X. Xu;Y. Li .Sulfur-carbon nano-composite as cathode for rechargeable lithium battery based on gel electrolyte[J].Electrochemistry communications,2002(6):499-502. |
| [7] | Jing Sun;Yaqin Huang;Weikun Wang;Zhongbao Yu;Anbang Wang;Keguo Yuan .Application of gelatin as a binder for the sulfur cathode in lithium-sulfur batteries[J].Electrochimica Acta,2008(24):7084-7088. |
| [8] | Chengdu Liang;Nancy J. Dudney;Jane Y. Howe .Hierarchically Structured Sulfur/Carbon Nanocomposite Material for High-Energy Lithium Battery[J].Chemistry of Materials: A Publication of the American Chemistry Society,2009(19):4724-4730. |
| [9] | Akitoshi Hayashi;Takamasa Ohtomo;Fuminori Mizuno;Kiyoharu Tadanaga;Masahiro Tatsumisago .All-solid-state Li/S batteries with highly conductive glass-ceramic electrolytes[J].Electrochemistry communications,2003(8):701-705. |
| [10] | W. Zheng;Y. W. Liu;X. G. Hu;C. F. Zhang .Novel nanosized adsorbing sulfur composite cathode materials for the advanced secondary lithium batteries[J].Electrochimica Acta,2006(7):1330-1335. |
| [11] | C. Lai;X. P. Gao;B. Zhang .Synthesis and Electrochemical Performance of Sulfur/Highly Porous Carbon Composites[J].The journal of physical chemistry, C. Nanomaterials and interfaces,2009(11):4712-4716. |
| [12] | Chengdu Liang;Sheng Dai .Synthesis of Mesoporous Carbon Materials via Enhanced Hydrogen-Bonding Interaction[J].Journal of the American Chemical Society,2006(16):5316-5317. |
| [13] | Yun-Xiao Wang;Ling Huang;Li-Chao Sun .Facile synthesis of a interleaved expanded graphite-embedded sulphur nanocomposite as cathode of Li-S batteries with excellent lithium storage performance[J].Journal of Materials Chemistry: An Interdisciplinary Journal dealing with Synthesis, Structures, Properties and Applications of Materials, Particulary Those Associated with Advanced Technology,2012(11):4744-4750. |
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