储能科学与技术 ›› 2017, Vol. 6 ›› Issue (3): 550-556.doi: 10.12028/j.issn.2095-4239.2017.0026

• 特约文章 • 上一篇    下一篇

高体积能量密度锂硫电池的构建：材料和电极

张  辰1，刘东海2，吕  伟 3，凌国维1，杨全红2,3   

  1. 1天津大学海洋科学与技术学院，天津 300072；2天津大学化工学院，天津 300072；3清华大学深圳研究生院，广东 深圳 518055
  • 收稿日期:2017-03-18 修回日期:2017-03-29 出版日期:2017-05-01 发布日期:2017-05-01
  • 通讯作者: 杨全红，教授，主要研究方向为碳功能材料，E-mail：qhyangcn@tju.edu.cn。
  • 作者简介:张辰（1988—），男，讲师，主要研究方向为碳基功能材料在储能、海洋环保中的应用，E-mail：zhangc@tju.edu.cn
  • 基金资助:

    国家自然科学基金项目（51602220，U1401243）。

Construction of Li-S battery with high volumetric performance: Materials and electrode#br#

ZHANG Chen1, LIU Donghai2, LV Wei3, LING Guowei 1, YANG Quanhong 2,3   

  • Received:2017-03-18 Revised:2017-03-29 Online:2017-05-01 Published:2017-05-01

PDF

816

摘要： 锂硫电池的出现为高能量密度储能器件的发展提供了机遇，但硫的固有性质也给锂硫电池的性能突破造成瓶颈。碳纳米材料显著改善了硫正极的性能，然而从器件层面上，锂硫电池的能量密度，特别是体积能量密度还远低于预期。高硫含量、致密化硫/碳复合电极设计是解决这一问题的关键，从材料设计出发，实现材料致密化、电极厚密化和器件轻薄化，是未来锂硫电池实现高体积能量密度储能的原则。本文讨论了实现锂硫电池致密储能的研究策略，提出液相组装是实现材料致密化的有效途径，评述了高性能硫/碳复合材料的研究进展，并对锂硫电池致密储能在航天、海洋探测等领域的应用前景进行了展望。

关键词: 锂硫电池, 石墨烯, 体积能量密度, 液相制备

Abstract:

 The emergence of lithium-sulfur (Li-S) battery accelerates the development of high-energy energy storage devices, but the intrinsic properties of sulfur are the bottlenecks for high-performance Li-S battery. The employment of conductive carbon nanomaterials improves the performance of sulfur electrode significantly, while the energy density both calculated from mass or volume is far below the expected value. Densified sulfur/carbon electrode with high sulfur content is the key to solve this issue, and starting from the materials design to densify the materials, the electrode and lighten the device is a promising principle to pave the avenue towards compact Li-S battery. This contribution discusses the research principles for compact energy storage in Li-S battery, and proposes the solution-based assembly as the high-efficiency approach to realize the high volumetric performance. The recent advances for high-volumetric performance Li-S battery are presented here and future application of Li-S batteries in marine science and aerospace science is commented.

Key words: Li-S battery, graphene, volumetric performance, solution-based construction