A trilayer separator with dual function for high performance lithium–sulfur batteries
作者： Rensheng Song , Ruopian Fang , Lei Wen , Ying Shi , Shaogang Wang
DOI: 10.1016/J.JPOWSOUR.2015.10.007
关键词:
摘要: Abstract In this article, we propose a trilayer graphene/polypropylene/Al2O3 (GPA) separator with dual function for high performance lithium–sulfur (Li–S) batteries. Graphene is coated on one side of polypropylene (PP) separator, which functions as conductive layer and an electrolyte reservoir that allows rapid electron ion transport. Then Al2O3 particles are the other to further enhance thermal stability safety graphene (GCP) touched lithium metal anode in Li–S battery. The GPA shows good after heating at 157 °C 10 min while both GCP PP separators showing obvious shrinkage about 10%. initial discharge specific capacity coin cell could reach 1067.7 mAh g−1 0.2C. After 100 discharge/charge cycles, it can still deliver reversible 804.4 mAh g−1 75% retention. pouch cells confirm design has great promise towards practical applications.
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