An overview of the characteristics of advanced binders for high-performance Li-S batteries

• 作者: Jun Zhang Mingnan Li Hussein A.Younus Binshen Wang Qunhong Weng Yan Zhang Shiguo Zhang
• 来源期刊: 纳米材料科学（英文版）
• 年，卷（期）: 2021,（2）
• 页码范围: 124-139
• 页数: 16页
• 语种: 中文

摘要

The lithium-sulfur battery (Li-S) is a promising energy storage system with many advantages over the commercialized lithium-ion battery. It has a high theoretical capacity of 1675 mAh g-1, a high theoretical energy density (2600 Wh kg-1), and is eco-environmentally friendly. Although only a small amount is used (＜10 wt%) in the electrode, binders may affect the discharge capacity and cycling stability of sulfur cathodes in the Li-S battery. In recent years, tremendous efforts have been made to develop functional binders with robust adhesive strength, fast ion/electron transportation, strong anchoring of lithium polysulfide (LiPS), and rapid redox kinetics, to improve capacity, coulombic efficiency, and energy density. This article reviews recent developments in binders for the Li-S battery. After briefly introducing the fundamentals of the Li-S battery, the desireable characteristics of binders are discussed based on the correlation between the functions of the binder molecules and the per-formance of the battery. Future challenges in developing promising binders and potential solutions are provided in the conclusion.