PEG包覆涂层对含碳纤维导电剂的锂硫正极材料的影响
收稿日期: 2016-09-28
修回日期: 2016-11-15
网络出版日期: 2016-12-09
基金资助
北京市科委基金项目资助（横向项目）
Effect of PEG-Coating on Properties of Lithium-Sulfur Battery Cathode Material Containing Carbon Fiber Conductive Agent
Received date: 2016-09-28
Revised date: 2016-11-15
Online published: 2016-12-09
通过球磨混合及聚乙二醇（PEG）包覆处理制备含有高模量碳纤维（HMCF）的硫基复合材料.采用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，采用X-光电子扫描能谱（XPS）验证了PEG包覆在材料的表面，较系统地研究了PEG含量对含有高模量碳纤维的硫正极比容量、循环稳定性和倍率性能等性能的影响.结果表明：和常用的导电剂乙炔黑(AB)相比，HMCF导电剂具有结晶度高，接触角小，吸液性能好等优点.当PEG涂层量为1.09%时，硫正极初始放电容量为1312.5 mAh·g-1，在电流密度为200 mA·g-1充放电时，50次循环以后可逆容量保持为650 mAh·g-1，和没有PEG涂层相比，循环稳定性提高了39.9%.
谭杰成 , 田艳红 , 张学军 , 樊开乐 . PEG包覆涂层对含碳纤维导电剂的锂硫正极材料的影响[J]. 电化学, 2017 , 23(6) : 654 -660 . DOI: 10.13208/j.electrochem.160928
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