| 高性能锂-硫电池用复合正极的构造与粘结剂 |
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| 引用本文： | 伍英蕾,杨军,王久林,尹利超,努丽燕娜.高性能锂-硫电池用复合正极的构造与粘结剂[J].物理化学学报,2010,26(2):283-290. |
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| 作者姓名： | 伍英蕾 杨军 王久林 尹利超 努丽燕娜 |
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| 作者单位： | Department of Chemical Engineering, Shanghai Jiaotong University, Shanghai 200240, P. R. China |
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| 基金项目： | China (07JC14024).国家重点基础研究发展规划项目(973)，上海市基础研究重点基金 |
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| 摘 要： | 采用球磨混合及热处理方法制备了含有多壁碳纳米管(MCNTs)的硫基复合正极材料,利用X射线衍射(XRD)和扫描电子显微镜(SEM)测定材料的结构和形貌,较系统地研究了MCNTs含量和粘结剂种类对硫基复合正极容量、循环稳定性和自放电行为等的影响.结果表明:MCNTs的合适含量为5%-8%(w,质量分数),以水性粘结剂环糊精制备的硫基复合正极电化学性能最佳.锂-硫电池在常温和半充电状态下放置30天几乎没有自放电;当电流倍率为0.1C时,β-环糊精为粘结剂的正极初始充电容量为687.7mAh.g-1,100次循环以后可逆容量为623.8mAh.g-1,容量保持率达90.7%.
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| 关 键 词： | 锂-硫电池 硫基正极 多壁碳纳米管 水性粘结剂 环糊精 |
| 收稿时间： | 2009-07-27 |
| 修稿时间： | 2009-10-12 |
Composite Cathode Structure and Binder for High Performance Lithium-Sulfur Battery |
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| WU Ying-Lei,YANG Jun,WANG Jiu-Lin,YIN Li-Chao,NULI Yan-Na.Composite Cathode Structure and Binder for High Performance Lithium-Sulfur Battery[J].Acta Physico-Chimica Sinica,2010,26(2):283-290. |
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| Authors: | WU Ying-Lei YANG Jun WANG Jiu-Lin YIN Li-Chao NULI Yan-Na |
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| Institution: | Department of Chemical Engineering, Shanghai Jiaotong University, Shanghai 200240, P. R. China |
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| Abstract: | Ball milling in combination with heat treatment was used to prepare sulfur-based composite cathode materials incorporating multi-walled carbon nanotubes (MCNTs) for Li-S battery. The structure and morphology of the as-prepared cathode materials were characterized by X-ray diffraction (XRD) and scanning electron microscopy (SEM). The effect of MCNT content and binder type on the capacity,cyclability and self-discharge behavior of a sulfur-based cathode were systematically investigated. Results show that the ... |
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| Keywords: | Li-S battery Sulfur-based cathode MCNTs Water-soluble binder Cyclodextrin |
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