Novel Non‐Carbon Sulfur Hosts Based on Strong Chemisorption for Lithium–Sulfur Batteries |
| |
Authors: | Yanfang Zhu Shun Wang Zongcheng Miao Yong Liu Shu‐Lei Chou |
| |
Affiliation: | 1. Key Laboratory of Organic Polymer Photoelectric Materials, School of Science, Xijing University, Xi'an, Shaanxi, P. R. China;2. Institute for Superconducting and Electronic Materials, Australian Institute for Innovative Materials, University of Wollongong Innovation Campus, North Wollongong, NSW, Australia;3. Nano‐materials & Chemistry Key Laboratory, College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou, Zhejiang, China;4. Lab of Nanoscale Biosensing and Bioimaging, Institute of Advanced Materials for Nano‐Bio Applications, School of Ophthalmology & Optometry, Wenzhou Medical University, Wenzhou, Zhejiang, China |
| |
Abstract: | Lithium–sulfur (Li–S) batteries are considered as promising candidates for energy storage systems owing to their high theoretical capacity and high energy density. The application of Li–S batteries is hindered by several obstacles, however, including the shuttle effect, poor electrical conductivity, and the severe volume expansion of sulfur. The traditional method is to integrate sulfur with carbon materials. But the interaction between polysulfide intermediates and carbon is only weak physical adsorption, which easily leads to the escape of species from the framework (shuttle effect) of the material causing capacity loss. Recently, however, there has been a trend for the introduction of novel non‐carbon materials as sulfur hosts based on the strong chemisorption. This review highlights recent research progress on novel non‐carbon sulfur hosts based on strong chemisorption, in Li–S batteries. In comparison with carbon‐based sulfur hosts, most non‐carbon sulfur hosts have been demonstrated to be polar host materials that could efficiently adsorb polysulfide via strong chemisorption, mitigating their dissolution. The intrinsic mechanism associated with the role of non‐carbon‐based host materials in improving the performance of Li–S batteries is discussed. |
| |
Keywords: | cathode materials chemisorption high volumetric density lithium– sulfur batteries non‐carbon polar sites |
|
|