Carbon Quantum Dots–Modified Interfacial Interactions and Ion Conductivity for Enhanced High Current Density Performance in Lithium–Sulfur Batteries

• Published in: Advanced energy materials Vol. 9; no. 7
• Main Authors: Hu, Yin, Chen, Wei, Lei, Tianyu, Zhou, Bin, Jiao, Yu, Yan, Yichao, Du, Xinchuan, Huang, Jianwen, Wu, Chunyang, Wang, Xuepeng, Wang, Yang, Chen, Bo, Xu, Jun, Wang, Chao, Xiong, Jie
• Format: Journal Article
• Language: English
• Published: Weinheim Wiley Subscription Services, Inc 14.02.2019
• Subjects: Carbon dots; carbon quantum dots; Cathodes; chemical absorption; Current density; Decay rate; Density functional theory; Electrochemical impedance spectroscopy; High current; high sulfur loading; Industrial applications; ion conductivity; Ion transport; Lithium ions; Lithium sulfur batteries; Organic chemistry; Performance enhancement; Polyethyleneimine; Quantum dots

Significant progress has achieved for developing lithium–sulfur (Li–S) batteries with high specific capacities and excellent cyclic stability. However, some critical issues emerge when attempts are made to raise the areal sulfur loading and increase the operation current density to meet the standard...