Two-Dimensional CeO2/RGO Composite-Modified Separator for Lithium/Sulfur Batteries

• Main Authors: Suyu Wang, Fan Gao, Yan Zhao, Ning Liu, Taizhe Tan, Xin Wang
• Format: Article
• Language: English
• Published: SpringerOpen 2018-11-01
• Series: Nanoscale Research Letters
• Subjects: CeO2/RGO composite; Modified separator; Lithium/sulfur batteries
• Online Access: http://link.springer.com/article/10.1186/s11671-018-2798-5

Abstract In this work, a modified separator coated with a functional layer of reduced graphene oxide (RGO) anchored by cerium oxide (CeO2) nanoparticles was developed. The superior conductivity of RGO and chemical immobilization of high-ordered sulfur-related species (mainly Li2S n 4 ≤ n ≤ 8) of CeO2 yielded batteries with enhanced characteristics. A remarkable original capacity of 1136 mAh g−1 was obtained at 0.1 C with capacity retention ratio of 75.7% after 100 charge/discharge cycles. Overall, these data indicate that the separator with CeO2/RGO composite is promising to suppress the shuttling of polysulfides for better utilization of the active material.