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高性能硫/碳凝胶复合正极材料的制备及应用
  • ISSN号：1006-3471Call Number: 35-1172/O6
  • 期刊名称：电化学
  • 时间：2010.5.5
  • 页码：168-171
  • 分类：O646[理学—物理化学;理学—化学] TM912.9[电气工程—电力电子与电力传动]
  • 作者机构：[1]厦门大学固体表面物理化学国家重点实验室,化学化工学院化学系,福建厦门361005
  • 相关基金：国家自然科学基金项目（200933005 20903077）; 973项目（2009CB220102）; 福建省科技项目（2008H0087）资助
  • 相关项目：基于薄液层氧化还原偶的新型超级电容器
作者： 王翀|陈嘉嘉|佘秋洁|张倩|施一宁|郑明森|董全峰|
关键词： 锂硫电池, 碳凝胶, 复合材料, 正极材料, lithium sulfur battery, carbon xerogel, composite material, cathode material
中文摘要：

以碳凝胶作导电骨架,合成硫/碳凝胶复合物.XRD、SEM等表征显示,该复合材料完全保持了碳凝胶的形貌,颗粒大小在10μm以下,硫吸附在碳凝胶内部空隙中呈无定形态,表现出良好的电化学性能.以0.1C放电,该材料首圈放电容量达到1311mAh/g.0.2C循环充放,首圈放电容量为1107.1mAh/g,30周充放电后,放电容量仍不低于800mAh/g.

英文摘要：

Sulfur/carbon composite was synthesized by the thermal method with the carbon xerogel as the conductive framework. The property of composite was characterd by XRD and SEM. It shown that the composite with the particle size below 10 μm had the same morphology as the carbon xerogel and the sulfur was absorbed in the pores in non-crystalline. The discharge capacity of the composites were 1311 mAh/g and 1107. 1 mAh/g at 0. 1C and 0. 2 C rates,respetively. And a retention capacity was about 800 mAh/g after 30 cylcyes.

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