Fibrous Materials for Flexible Li–S Battery

• Published in: Advanced energy materials 2021-04, Vol.11 (15), p.n/a
• Main Authors: Gao, Yuan, Guo, Qianyi, Zhang, Qiang, Cui, Yi, Zheng, Zijian
• Format: Article
• Language: English
• Subjects: Buffer layers; current collectors; Electrolytes; Electrolytic cells; fibrous materials; Flexibility; flexible lithium–sulfur batteries; Flux density; interfacial layers; Interlayers; Lithium; Lithium sulfur batteries; Molten salt electrolytes; Solid electrolytes
• ISSN: 1614-6832; 1614-6840
• DOI: 10.1002/aenm.202002580

The lithium–sulfur (Li–S) battery is an attractive high‐energy‐density technology for future flexible and wearable electronics, but it is a challenge to simultaneously realize adequate flexibility, stability, and energy density. Recent studies show that fibrous materials are promising to achieve flexible batteries with high energy density, by taking advantages of their intrinsic flexibility, lightweight, large surface area, and cost‐effectiveness. With a good tunability of the structure and function, fibrous materials can be suitable to construct various components of a working battery, including current collectors, buffer layers, interlayers, and solid‐state electrolytes. This review summarizes the recent development of fibrous materials for flexible Li–S batteries, with an emphasis on the discussion of the synthesis and preparation of materials, design of fibrous structures and functionalities, and layout of battery cells for achieving high Coulombic efficiency, long cycle life, and good flexibility. Recent progress in the use of fibrous materials in flexible lithium–sulfur batteries is reviewed. The synthesis of fibrous materials, the design of fibrous structures, and the functionalities of fibrous materials for enhancing the electrochemical and mechanical performance of different battery components are discussed.