赵永男,李杨,高海燕

• 1:天津工业大学天津市先进纤维与储能技术重点实验室
• 2:天津工业大学材料科学与工程学院
• 3:南开大学先进能源材料化学教育部重点实验室

摘要(Abstract)：

为了提高硫化聚丙烯腈（SPAN）正极材料的电化学性能，以二甲基亚砜为溶剂，以去离子水为非溶剂，采用热致相分离法制备了聚丙烯腈凝胶（PAN)_g，然后引入水合肼使PANg的分子链间发生N—N交联，制备出化学交联的聚丙烯腈凝胶（PAN_(g+N)），最终通过高温载硫法制得了硫化聚丙烯腈凝胶（SPAN_(g+N)）。利用SEM、TEM、FTIR、XRD等方法研究了材料的结构和物相特征。结果表明：交联结构的SPAN_(g+N)具有高度互联的三维网络结构，结构稳定性及电化学性能均得到显著提高。在0.5 C的电流密度时，首圈放电比容量为1 219.8 mA·h/g，循环100圈后的比容量为1 000.6 mA·h/g，容量保持率达到82.03%，平均每圈衰减率为0.18%。

关键词(KeyWords)： 锂硫电池;硫化聚丙烯腈;凝胶;热致相分离法

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金资助项目（21703152）;; 天津市青年科学基金资助项目（17JCQNJC06100）;; 南开大学先进能源材料化学教育部重点实验室开放基金项目

作者(Author): 赵永男,李杨,高海燕

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