Document Type
Article
Publication Date
2016
College/Unit
School of Medicine
Department/Program/Center
Orthopaedics
Abstract
Rechargeable lithium–sulfur (Li–S) batteries are receiving ever-increasing attention due to their high theoretical energy density and inexpensive raw sulfur materials. However, their rapid capacity fade has been one of the key barriers for their further improvement. It is well accepted that the major degradation mechanisms of S-cathodes include low electrical conductivity of S and sulfides, precipitation of nonconductive Li2S2 and Li2S, and poly-shuttle effects. To determine these degradation factors, a comprehensive study of sulfur cathodes with different amounts of electrolytes is presented here. A survey of the fundamentals of Li–S chemistry with respect to capacity fade is first conducted; then, the parameters obtained through electrochemical performance and characterization are used to determine the key causes of capacity fade in Li–S batteries. It is confirmed that the formation and accumulation of nonconductive Li2S2/Li2S films on sulfur cathode surfaces are the major parameters contributing to the rapid capacity fade of Li–S batteries.
Digital Commons Citation
Yan, Jianhua; Liu, Xingbo; and Li, Bingyun, "Capacity Fade Analysis of Sulfur Cathodes in Lithium–Sulfur Batteries" (2016). Faculty & Staff Scholarship. 1740.
https://researchrepository.wvu.edu/faculty_publications/1740
Source Citation
Yan, J., Liu, X., & Li, B. (2016). Capacity Fade Analysis of Sulfur Cathodes in Lithium-Sulfur Batteries. Advanced Science, 3(12), 1600101. https://doi.org/10.1002/advs.201600101
Comments
This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.