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

Nanoscale Research Letters

Xin Wang¹  Ning Liu²  Yan Zhao²  Suyu Wang²  Fan Gao²  Taizhe Tan³ 

[1] International Academy of Optoelectronics at Zhaoqing, South China Normal University;School of Materials Science and Engineering, Hebei University of Technology;Synergy Innovation Institute of GDUT;

关键词: CeO2/RGO composite;    Modified separator;    Lithium/sulfur batteries;   

DOI  :  10.1186/s11671-018-2798-5

来源: DOAJ

【 摘 要 】

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.

【 授权许可】

Unknown